ADAPTIVE BROADBAND CORP
8-K, 1999-07-21
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
Previous: BROWN FORMAN CORP, 10-K, 1999-07-21
Next: CANANDAIGUA BRANDS INC, 424B5, 1999-07-21



<PAGE>

                          SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D. C.  20549

                                       FORM 8-K

                        RELATING TO ADOPTION OF A RIGHTS PLAN

                        PURSUANT TO SECTION 13 OR 15(d) OF THE
                           SECURITIES EXCHANGE ACT OF 1934

           Date of Report (Date of earliest event reported):  June 17, 1999

                            ADAPTIVE BROADBAND CORPORATION
                (Exact name of registrant as specified in its charter)


                                       DELAWARE
                    (State or other jurisdiction of incorporation)



              000-7428                                 94-1668412
       (Commission File No.)                (IRS Employer Identification No.)



                                 1143 BORREGAS AVENUE
                             SUNNYVALE, CALIFORNIA 94089
                (Address of principal executive offices and zip code)



          Registrant's telephone number, including area code: (408) 732-4000



                                  ------------------
<PAGE>

ITEM 5.   OTHER EVENTS.

     On June 17, 1999, the Board of Directors of ADAPTIVE BROADBAND CORPORATION
(the "Company") approved the adoption of a Share Purchase Rights Plan (the "1999
Plan").  The 1999 Plan replaces the Rights Agreement adopted by the Board of
Directors in 1989 (the "1989 Plan"), which expires on July 26, 1999, and shall
be effective upon expiration of the 1989 Plan.  The 1999 Plan has a term of
approximately three years, compared with a 10-year term for the 1989 Plan.
Terms of the 1999 Plan provide for a dividend distribution of one common share
purchase right (a "Right") for each outstanding share of common stock, par value
$.10 per share (the "Common Shares"), of the Company.  The dividend is payable
on July 26, 1999 (the "Record Date") to the stockholders of record on that date.
Each Right entitles the registered holder to purchase from the Company one
Common Share at an initial exercise price of $80.00 per share (the "Purchase
Price"), subject to adjustment.  The description and terms of the Rights are set
forth in a Rights Agreement (the "Rights Agreement"), dated as of July 21, 1999
entered into between the Company and BankBoston, N.A., as rights agent (the
"Rights Agent").

     The Company currently intends to seek stockholder approval at its 1999
Annual Meeting for an amendment to its certificate of incorporation that would
require the Company to redeem or otherwise render the 1999 Plan inapplicable if
the Company receives certain types of offers to purchase the Company  (the
"Stockholder Referendum").  The 1999 Plan was, and the Stockholder Referendum
will be, the result of in depth consideration by the Board of Directors, in
consultation with its legal and financial advisors, with the goal of adopting
provisions that are consistent with the Company's corporate governance policy of
seeking stockholder input as appropriate regarding corporate decisions.
Information about the Stockholder Referendum will be contained in the Company's
definitive proxy statement to be filed with the SEC.

     Initially, the Rights will be evidenced by the stock certificates
representing the Common Shares then outstanding, and no separate Right
Certificates, as defined, will be distributed.  Until the earlier to occur of
(i) the date of a public announcement that a person, entity or group of
affiliated or associated persons have acquired beneficial ownership of 20% or
more of the outstanding Common Shares (an "Acquiring Person") or (ii) 10
business days (or such later date as may be determined by action of the Board of
Directors prior to such time as any person or entity becomes an Acquiring
Person) following the commencement of, or announcement of an intention to
commence, a tender offer or exchange offer the consummation of which would
result in any person or entity becoming an Acquiring Person (the earlier of such
dates being called the "Distribution Date"), the Rights will be evidenced, with
respect to any of the Common Share certificates outstanding as of the Record
Date, by such Common Share certificate with or without a copy of the Summary of
Rights, which is included in the Rights Agreement as Exhibit B thereof (the
"Summary of Rights").

     Until the Distribution Date, the Rights will be transferable with and only
with the Common Shares.  Until the Distribution Date (or earlier redemption or
expiration of the Rights), new Common Share certificates issued after the Record
Date, upon transfer or new issuance of Common Shares, will contain a notation
incorporating the Rights Agreement by reference.  Until the Distribution Date
(or earlier redemption or expiration of the Rights), the surrender or transfer
of any certificates for Common Shares outstanding as of the Record Date, even
without such


                                          1.
<PAGE>

notation or a copy of the Summary of Rights being attached thereto, will also
constitute the transfer of the Rights associated with the Common Shares
represented by such certificate.  As soon as practicable following the
Distribution Date, separate certificates evidencing the Rights ("Right
Certificates") will be mailed to holders of record of the Common Shares as of
the close of business on the Distribution Date and such separate Right
Certificates alone will evidence the Rights.

     The Rights are not exercisable until the Distribution Date.  The Rights
will expire on June 30, 2002 (the "Final Expiration Date"), unless the Rights
are earlier redeemed or exchanged by the Company, in each case, as described
below.

     In lieu of issuing Common Shares upon exercise of the Rights, the Company
may, if a majority of the Board of Directors then in office determines that such
action is necessary or appropriate and not contrary to the interests of holders
of Rights, elect to (and, in the event that there are not sufficient treasury
shares and authorized but unissued Common Shares to permit the exercise in full
of the Rights), take all such action as may be necessary to authorize, issue or
pay, cash (including by way of a reduction of the Purchase Price), property,
preferred stock of the Company, other securities or any combination thereof
having an aggregate value equal to the value of the Common Shares which
otherwise would have been issuable.

     The Purchase Price payable, and the number of Common Shares, cash,
property, preferred stock of the Company, other securities or any combination
thereof substituted therefor, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Common
Shares, (ii) upon the grant to holders of the Common Shares of certain rights or
warrants to subscribe for or purchase Common Shares at a price, or securities
convertible into Common Shares with a conversion price, less than the then
current market price of the Common Shares or (iii) upon the distribution to
holders of the Common Shares of evidences of indebtedness or assets (excluding
regular periodic cash dividends paid out of earnings or retained earnings or
dividends payable in Common Shares) or of subscription rights or warrants (other
than those referred to above).

     In the event that any person or group of affiliated or associated persons
becomes an Acquiring Person, proper provision shall be made so that each holder
of a Right, other than Rights beneficially owned by the Acquiring Person and its
associates and affiliates (which will thereafter be void), will for a 60-day
period have the right to receive upon exercise that number of Common Shares
having a market value of two times the exercise price of the Right (or, if such
number of shares is not and cannot be authorized, the Company may issue
preferred stock of the Company, other securities, property, cash or a
combination thereof in exchange for the Rights).  This right will terminate 60
days after the date on which the Rights become nonredeemable (as described
below), unless there is an injunction or similar obstacle to exercise of the
Rights, in which event this right will terminate 60 days after the date on which
the Rights again become exercisable.

     Generally, under the Plan, an "Acquiring Person" shall not be deemed to
include (i) the Company, (ii) a subsidiary of the Company, (iii) any employee
benefit or compensation plan of


                                          2.
<PAGE>

the Company, (iv) any entity holding Common Shares for or pursuant to the terms
of any such employee benefit or compensation plan or (v) any person who or which
has received the approval of the Board of Directors to become the beneficial
owner of 20% or more of the Common Shares.  In addition, except under limited
circumstances, no person or entity shall become an Acquiring Person as the
result of the acquisition of Common Shares by the Company which, by reducing the
number of shares outstanding, increases the proportionate number of shares
beneficially owned by such person or entity to 20% or more of the Common Shares
then outstanding if the person follows the procedures specified in the Rights
Agreement, including notification to the Board of Directors and divestiture of
Common Shares beneficially owned in excess of 3,000,000 shares.

     In the event that the Company is acquired in a merger or other business
combination transaction or 50% or more of its consolidated assets or earning
power are sold to an Acquiring Person, its associates or affiliates or certain
other persons in which such persons have an interest, proper provision will be
made so that each holder of a Right will thereafter have the right to receive,
upon the exercise thereof at the then current exercise price of the Right, that
number of shares of common stock of the acquiring company which at the time of
such transaction will have a market value of two times the exercise price of the
Right.

     At any time after an Acquiring Person becomes an Acquiring Person and prior
to the acquisition by such Acquiring Person of 50% or more of the outstanding
Common Shares, the Board of Directors of the Company may exchange the Rights
(other than Rights owned by such person or group which have become void), in
whole or in part, at an exchange ratio of one Common Share per Right (or, at the
election of the Company, the Company may issue cash, property, preferred stock
of the Company, other securities or any combination thereof substituted therefor
in exchange for the Rights), subject to adjustment.

     With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment of at least 1% in
such Purchase Price.  No fractional Common Shares will be issued.

     At any time prior to the earliest of (i) the day of the first public
announcement that a person has become an Acquiring Person or (ii) the Final
Expiration Date, the Board of Directors of the Company may redeem the Rights in
whole, but not in part, at a price of $0.01 per Right (the "Redemption Price").
Following the expiration of the above periods, the Rights become nonredeemable.
Immediately upon any redemption of the Rights, the right to exercise the Rights
will terminate and the only right of the holders of Rights will be to receive
the Redemption Price.

     The terms of the Rights may be amended by the Board of Directors of the
Company without the consent of the holders of the Rights, except that from and
after such time as the rights are distributed no such amendment may adversely
affect the interest of the holders of the Rights excluding the interests of an
Acquiring Person.

     Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive dividends.


                                          3.
<PAGE>

     The Rights have certain anti-takeover effects.  The Rights will cause
substantial dilution to a person or group that attempts to acquire the Company
on terms not approved by the Company's Board of Directors.  The Rights should
not interfere with any merger or other business combination approved by the
Board of Directors since the Rights may be amended to permit such acquisition or
redeemed by the Company at $0.01 per Right prior to the earliest of (i) the time
that a person or group has acquired beneficial ownership of 20% or more of the
Common Shares or (ii) the final expiration date of the rights.










                                          4.
<PAGE>

ITEM 7.   EXHIBITS.

<TABLE>
     <S>      <C>
     99.1     Press Release, dated as of June 24, 1999 entitled "Adaptive
              Broadband Corporation Adopts New Three-Year Stockholder Rights
              Plan; Will Propose Stockholder-Friendly, Chewable Provision For
              Plan At Regularly Scheduled Stockholder Meeting In October."

     99.2     Rights Agreement dated as of July 21, 1999 among Adaptive
              Broadband Corporation and BankBoston, N.A.

     99.3     Form of Rights Certificate.
</TABLE>




                                          5.
<PAGE>

                                      SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.


                                        ADAPTIVE BROADBAND CORPORATION

Dated:  July 21, 1999                   By:    /s/  Donna S. Birks
                                           -------------------------------------
                                             Donna S. Birks
                                             Executive Vice President and
                                             Chief Financial Officer










                                          6.
<PAGE>

                                  INDEX TO EXHIBITS

<TABLE>
     <S>      <C>
     99.1     Press Release, dated as of June 24, 1999 entitled "Adaptive
              Broadband Corporation Adopts New Three-Year Stockholder Rights
              Plan; Will Propose Stockholder-Friendly, Chewable Provision For
              Plan At Regularly Scheduled Stockholder Meeting In October."

     99.2     Rights Agreement dated as of July 21, 1999 among Adaptive
              Broadband Corporation and BankBoston, N.A.

     99.3     Form of Rights Certificate.
</TABLE>






                                          7.


<PAGE>

FOR IMMEDIATE RELEASE
June 24, 1999


                 ADAPTIVE BROADBAND CORPORATION ADOPTS NEW THREE-YEAR
                               STOCKHOLDER RIGHTS PLAN;
              WILL PROPOSE STOCKHOLDER-FRIENDLY, CHEWABLE PROVISION FOR
                  PLAN AT REGULARLY SCHEDULED STOCKHOLDER MEETING IN
                                       OCTOBER

SUNNYVALE, CALIFORNIA-ADAPTIVE BROADBAND CORPORATION (NASDAQ NATIONAL MARKET:
ADAP) announced that upon the expiration of its current stockholder rights plan
July 26, 1999, its Board of Directors approved the adoption of a new three-year
Stockholder Rights Plan under which all stockholders of record as of July 26,
1999, will receive rights to purchase shares of Common Stock. The company
intends to propose an amendment to its certificate of incorporation that would
add a stockholder-friendly "chewable" feature for the Rights Plan, for approval
by a vote of its stockholders at its regularly scheduled stockholder meeting in
October 1999.  This chewable feature would require the Company to redeem or
otherwise make the Rights Plan inapplicable if the company receives certain
types of acquisition proposals and the stockholders vote to require it to do so.
The company also intends to seek stockholder approval of the use of Preferred
Stock in connection with the Rights Plan instead of Common Stock.  At that time,
the current plan, as modified, will be amended to reflect the chewable feature
and the use of Preferred Stock, if approved.

FAIR AND EQUAL TREATMENT FOR ALL STOCKHOLDERS
The Rights Plan is designed to enable all Adaptive Broadband Corporation
stockholders to realize the full value of their investment and to provide for
fair and equal treatment for all stockholders in the event that an unsolicited
attempt is made to acquire the company. The adoption of the Rights Plan is
intended as a means to guard against abusive takeover tactics and is not in
response to any particular proposal.

STOCKHOLDER-FRIENDLY, CORPORATE GOVERNANCE GUIDELINES
"We believe Adaptive Broadband's value is lagging significantly behind the
realizable potential of our recent expansive introduction of new products, which
are targeted at larger markets than our previous core products. Validating
orders are beginning to flow and provide an opportunity to dramatically increase
our revenue over the next few years. While we believe that rights plans need to
be considered carefully, we may be an attractive acquisition target, and feel it
is only prudent to continue a rights plan. We also feel it is only fair to
tailor a permanent, stockholder-friendly plan," commented Frederick D. Lawrence,
Adaptive Broadband's chairman and chief executive officer. In September 1997,
the company's board of directors adopted Corporate Governance Guidelines, which

<PAGE>

outline the respective responsibilities of management and the board and provide
a process for evaluating the performance of the board, committees of the board
and the chief executive officer. Specific covenants of the governance standards
prohibit the re-pricing of options, require directors and managers to own
substantial quantities of stock, and allow for confidentiality of voting by
shareholders. Full details of Adaptive Broadband's corporate governance
standards can be found in the company's 1997 and 1998 proxy statements, and on
the company's Web site under Investor Relations at
http://www.adaptivebroadband.com.

GOVERNANCE COMMITTEE CONDUCTED EXTENSIVE RESEARCH
The governance committee of Adaptive Broadband's board convened several times
and, together with legal counsel and investment banking advisors, conducted
extensive research on the issue of rights plans. As a result, the board is
recommending a Rights Plan which will include the following features: a) a
shorter life span at three years, and b) shareholder voice in the prolonged use
of the plan in the face of certain types of acquisition proposals.  Details of
the proposed Rights Plan will be contained in the Company's proxy statement for
the 1999 Annual Meeting.

DISCOURAGES ACQUISITION OF 20% OR MORE OF COMMON STOCK WITHOUT BOARD NEGOTIATION
The rights will be distributed as a non-taxable dividend and will expire on June
30, 2002.  The rights will be exercisable only if a person or group acquires 20
percent or more of the company's Common Stock or announces a tender offer for
fifty percent or more of the Common Stock. If a person acquires 20 percent or
more of Adaptive Broadband Corporation's Common Stock, all rightsholders, except
the buyer, will be entitled to acquire one share of Common Stock at a discount.
The effect will be to discourage acquisitions of more than 20 percent of the
company's Common Stock without negotiations with the Board, subject to certain
exceptions.  If a stockholder owns 20 percent or more of the Common Stock as a
result of share repurchases by the Company, that stockholder will not trigger
the rights unless that stockholder acquires more than 3,000,000 total shares.

The rights will trade with company's Common Stock, unless and until they are
separated upon the occurrence of certain future events.  The rights distribution
is not taxable to the stockholders.  Adaptive Broadband Corporation's Board of
Directors may terminate the Rights Plan at any time or redeem the rights prior
to the time a person acquires more than 20 percent of the company's Common
Stock.  Additional details regarding the Rights Plan will be outlined in a
summary to be mailed to all stockholders following the record date.

Adaptive Broadband (http://www.adaptivebroadband.com) is a leading supplier of
terrestrial wireless and satellite-based systems to support ultra-high speed
Internet access, broadcast digital TV transport and worldwide Internet

<PAGE>

backbones. The company also provides industry-leading solutions for
satellite-based data communications and terrestrial wireless telemetry networks.


FOR FURTHER INFORMATION CONTACT:
Stephanie M. Day                             Investor Information Line:
Vice President-Investor Relations and        (Toll-free) 1-888-225-6789
Corporate Communications
       http://www.adaptivebroadband.com
(408) 743-3429
(408) 743-3482 Fax
[email protected]

                                         ###


<PAGE>



- --------------------------------------------------------------------------------

                            ADAPTIVE BROADBAND CORPORATION

                                         AND

                                   BANKBOSTON, N.A.
                                   AS RIGHTS AGENT

                                   RIGHTS AGREEMENT

                              DATED AS OF JULY 21, 1999

- --------------------------------------------------------------------------------

<PAGE>

                                  TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            PAGE
<S>            <C>                                                          <C>
Section 1.     Certain Definitions . . . . . . . . . . . . . . . . . . . . . . 1

Section 2.     Appointment of Rights Agent . . . . . . . . . . . . . . . . . . 4

Section 3.     Issue of Rights Certificates. . . . . . . . . . . . . . . . . . 5

Section 4.     Form of Rights Certificates . . . . . . . . . . . . . . . . . . 7

Section 5.     Countersignature and Registration . . . . . . . . . . . . . . . 7

Section 6.     Transfer, Split Up, Combination and Exchange of Rights
               Certificates; Mutilated, Destroyed, Lost or Stolen Rights
               Certificates. . . . . . . . . . . . . . . . . . . . . . . . . . 8

Section 8.     Cancellation and Destruction of Rights Certificates . . . . . .11

Section 9.     Availability of Common Shares . . . . . . . . . . . . . . . . .11

Section 10.    Common Shares Record Date . . . . . . . . . . . . . . . . . . .12

Section 11.    Adjustment of Purchase Price, Number of Shares or
               Number of Rights. . . . . . . . . . . . . . . . . . . . . . . .13

Section 12.    Certificate of Adjusted Purchase Price or Number of Shares. . .21

Section 13.    Consolidation, Merger or Sale or Transfer of Assets or
               Earning Power . . . . . . . . . . . . . . . . . . . . . . . . .21

Section 14.    Fractional Rights and Fractional Shares . . . . . . . . . . . .24

Section 15.    Rights of Action. . . . . . . . . . . . . . . . . . . . . . . .26

Section 16.    Agreement of Rights Holders . . . . . . . . . . . . . . . . . .26

Section 17.    Rights Certificate Holder Not Deemed a Stockholder. . . . . . .27

Section 18.    Concerning the Rights Agent . . . . . . . . . . . . . . . . . .27

Section 19.    Merger or Consolidation or Change of Name of Rights Agent . . .28

Section 20.    Duties of Rights Agent. . . . . . . . . . . . . . . . . . . . .28

Section 21.    Change of Rights Agent. . . . . . . . . . . . . . . . . . . . .30

Section 22.    Issuance of New Rights Certificates . . . . . . . . . . . . . .31

Section 23.    Redemption. . . . . . . . . . . . . . . . . . . . . . . . . . .32

Section 24.    Exchange. . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Section 25.    Notice of Certain Events. . . . . . . . . . . . . . . . . . . .36

Section 26.    Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Section 27.    Supplements and Amendments. . . . . . . . . . . . . . . . . . .37

Section 28.    Determination and Actions by the Board of Directors, etc. . . .38

Section 29.    Successors. . . . . . . . . . . . . . . . . . . . . . . . . . .38

Section 30.    Benefits of this Agreement. . . . . . . . . . . . . . . . . . .38
</TABLE>


                                          i.
<PAGE>

                                  TABLE OF CONTENTS
                                     (CONTINUED)

<TABLE>
<CAPTION>
                                                                            PAGE
<S>            <C>                                                          <C>
SECTION 31.    SEVERABILITY. . . . . . . . . . . . . . . . . . . . . . . . . .38

SECTION 32.    GOVERNING LAW . . . . . . . . . . . . . . . . . . . . . . . . .38

SECTION 33.    COUNTERPARTS. . . . . . . . . . . . . . . . . . . . . . . . . .39

SECTION 34.    DESCRIPTIVE HEADINGS. . . . . . . . . . . . . . . . . . . . . .39
</TABLE>








                                         ii.
<PAGE>

                                   RIGHTS AGREEMENT

     THIS RIGHTS AGREEMENT ("Agreement"), dated as of July 21, 1999, between
ADAPTIVE BROADBAND CORPORATION, a Delaware corporation (the "Company"), and
BANKBOSTON, N.A., a national banking association (the "Rights Agent").

     The Board of Directors of the Company authorized and declared a dividend of
one common share purchase right (a "Right") for each Common Share (as such term
is hereinafter defined) outstanding at the close of business on July 26, 1999
(the "Record Date"), each Right representing the right to purchase one Common
Share upon the terms and subject to the conditions herein set forth, and has
further authorized and directed the issuance of one Right with respect to each
Common Share that shall become outstanding between the Record Date and the
earliest to occur of the Distribution Date, the Redemption Date and the Final
Expiration Date (as such terms are hereinafter defined); PROVIDED, HOWEVER, that
Rights may be issued with respect to Common Shares that shall become outstanding
after the Distribution Date and prior to the earlier of the Redemption Date and
the Final Expiration Date in accordance with the provisions of Section 22
hereof.

     Accordingly, in consideration of the premises and the mutual agreements
herein set forth, the parties hereby agree as follows:

SECTION 1.   CERTAIN DEFINITIONS.  For purposes of this Agreement, the
             following terms have the meanings indicated:

             (a)    "ACQUIRING PERSON" shall mean any Person (as such term is
                    hereinafter defined) who or which, together with all
                    Affiliates and Associates (as such terms are hereinafter
                    defined) of such Person, shall be the Beneficial Owner (as
                    such term is hereinafter defined) of 20% or more of the
                    Common Shares then outstanding.  Notwithstanding the
                    foregoing, (A) the term "Acquiring Person" shall not include
                    (i) the Company, (ii) any Subsidiary (as such term is
                    hereinafter defined) of the Company, (iii) any employee
                    benefit or compensation plan of the Company or of any
                    Subsidiary of the Company, (iv) any entity holding Common
                    Shares for or pursuant to the terms of any such employee
                    benefit plan or (v) any Person who or which has received the
                    approval of the Board of Directors of the Company to become
                    the Beneficial Owner of 20% or more of the Common Shares,
                    and (B) no Person shall become an "Acquiring Person" either
                    (x) as the result of an acquisition of Common Shares by the
                    Company which, by reducing the number of shares outstanding,
                    increases the proportionate number of shares beneficially
                    owned by such Person to 20% or more of the Common Shares
                    then outstanding (PROVIDED, HOWEVER, that if a Person shall
                    become the Beneficial Owner of 20% or more of the Common
                    Shares then outstanding by reason of share purchases by the
                    Company and shall, following written notice from, or public
                    disclosure by, the Company of such share purchases by the
                    Company, become the Beneficial Owner of any additional
                    Common Shares without the prior


                                          1.
<PAGE>

                    consent of the Company and shall then be the Beneficial
                    Owner of more than 3,000,000 shares of the Common Shares
                    (subject to adjustment for stock splits, stock combinations,
                    recapitalizations, reclassifications and the like), then
                    such Person shall be deemed to be an "Acquiring Person", or
                    (y) if the Board of Directors determines in good faith that
                    a Person who would otherwise be an "Acquiring Person," as
                    defined pursuant to the foregoing provisions of this
                    paragraph (a), has become such inadvertently, and such
                    Person divests, as promptly as practicable (as determined in
                    good faith by the Board of Directors), but in any event
                    within five Business Days, following receipt of written
                    notice from the Company of such event, of Beneficial
                    Ownership of a sufficient number of Common Shares so that
                    such Person would no longer be an Acquiring Person, as
                    defined pursuant to the foregoing provisions of this
                    paragraph (a).

             (b)    "AFFILIATE" and "ASSOCIATE" shall have the respective
                    meanings ascribed to such terms in Rule 12b-2 of the General
                    Rules and Regulations under the Securities Exchange Act of
                    1934, as amended (the "Exchange Act"), as in effect on the
                    date of this Agreement; PROVIDED, HOWEVER, that the limited
                    partners of a limited partnership shall not be deemed to be
                    Associates of such limited partnership solely by virtue of
                    their limited partnership interests.

             (c)    A Person shall be deemed the "BENEFICIAL OWNER" of and shall
                    be deemed to "beneficially own" any securities:

                    (i)    which such Person or any of such Person's Affiliates
                           or Associates is deemed to beneficially own, within
                           the meaning of Rule 13d-3 of the General Rules and
                           Regulations under the Exchange Act as in effect on
                           the date of this Agreement;

                    (ii)   which such Person or any of such Person's Affiliates
                           or Associates has (A) the right to acquire (whether
                           such right is exercisable immediately or only after
                           the passage of time) pursuant to any agreement,
                           arrangement or understanding (other than customary
                           agreements with and between underwriters and selling
                           group members with respect to a bona fide public
                           offering of securities and other than agreements
                           between the Company and any corporate partner
                           pursuant to which the right to purchase shares is
                           conditioned upon the achievement of research or
                           development milestones), or upon the exercise of
                           conversion rights, exchange rights, rights (other
                           than these Rights), warrants or options, or
                           otherwise; PROVIDED, HOWEVER, that a Person shall
                           not be deemed the Beneficial Owner of, or to
                           beneficially own, securities tendered pursuant to a
                           tender or exchange offer made by or on behalf of
                           such Person or any of such Person's Affiliates or
                           Associates until such tendered securities are
                           accepted for purchase or exchange; or (B) the right
                           to vote pursuant to any agreement, arrangement or


                                          2.
<PAGE>

                           understanding; PROVIDED, HOWEVER, that a Person
                           shall not be deemed the Beneficial Owner of, or to
                           beneficially own, any security if the agreement,
                           arrangement or understanding to vote such security
                           (1) arises solely from a revocable proxy or consent
                           given to such Person in response to a public proxy
                           or consent solicitation made pursuant to, and in
                           accordance with, the applicable rules and
                           regulations promulgated under the Exchange Act and
                           (2) is not also then reportable on Schedule 13D
                           under the Exchange Act (or any comparable or
                           successor report); or

                    (iii)  which are beneficially owned, directly or
                           indirectly, by any other Person with which such
                           Person or any of such Person's Affiliates or
                           Associates has any agreement, arrangement or
                           understanding (other than customary agreements with
                           and between underwriters and selling group members
                           with respect to a bona fide public offering of
                           securities) for the purpose of acquiring, holding,
                           voting (except to the extent contemplated by the
                           proviso to Section 1(c)(ii)(B) hereof) or disposing
                           of any securities of the Company.

                    Notwithstanding anything in this definition of Beneficial
                    Ownership to the contrary, the phrase, "then outstanding,"
                    when used with reference to a Person's Beneficial Ownership
                    of securities of the Company, shall mean the number of such
                    securities then issued and outstanding together with the
                    number of such securities not then actually issued and
                    outstanding which such Person would be deemed to own
                    beneficially hereunder.

             (d)    "BUSINESS DAY" shall mean any day other than a Saturday, a
                    Sunday, or a day on which banking institutions in the
                    Commonwealth of Massachusetts are authorized or obligated by
                    law or executive order to close.

             (e)    "CLOSE OF BUSINESS" on any given date shall mean 5:00 p.m.,
                    Eastern Time, on such date; PROVIDED, HOWEVER, that if such
                    date is not a Business Day it shall mean 5:00 p.m., Eastern
                    Time, on the next succeeding Business Day.

             (f)    "COMMON SHARES" shall mean the shares of common stock, par
                    value $.10 per share, of the Company; PROVIDED, HOWEVER,
                    that, "Common Shares," when used in this Agreement in
                    connection with a specific reference to any Person other
                    than the Company, shall mean the capital stock (or equity
                    interest) with the greatest voting power of such other
                    Person or, if such other Person is a Subsidiary of another
                    Person, the Person or Persons which ultimately control such
                    first-mentioned Person.

             (g)    "DISTRIBUTION DATE" shall have the meaning set forth in
                    Section 3 hereof.


                                          3.
<PAGE>

             (h)    "FINAL EXPIRATION DATE" shall have the meaning set forth in
                    Section 7 hereof.

             (i)    "INTERESTED STOCKHOLDER" shall mean any Acquiring Person or
                    any Affiliate or Associate of an Acquiring Person or any
                    other Person in which any such Acquiring Person, Affiliate
                    or Associate has an interest, or any other Person acting
                    directly or indirectly on behalf of or in concert with any
                    such Acquiring Person, Affiliate or Associate.

             (j)    "PERSON" shall mean any individual, firm, corporation or
                    other entity, and shall include any successor (by merger or
                    otherwise) of such entity.

             (k)    "PURCHASE PRICE" shall have the meaning set forth in
                    Section 7(b) hereof.

             (l)    "REDEMPTION DATE" shall have the meaning set forth in
                    Section 7 hereof.

             (m)    "SHARES ACQUISITION DATE" shall mean the first date of
                    public announcement by the Company or an Acquiring Person
                    that an Acquiring Person has become such PROVIDED, HOWEVER
                    that, if such Person is determined not to have become an
                    Acquiring Person pursuant to clause (y) of
                    Subsection 1(a)(B) hereof, then no Shares Acquisition Date
                    shall be deemed to have occurred.

             (n)    "SUBSIDIARY" of any Person shall mean any corporation or
                    other entity of which a majority of the voting power of the
                    voting equity securities or equity interest is owned,
                    directly or indirectly, by such Person.

             (o)    "TRANSACTION" shall mean any merger, consolidation or sale
                    of assets described in Section 13(a) hereof or any
                    acquisition of Common Shares which would result in a Person
                    becoming an Acquiring Person or a Principal Party (as such
                    term is hereinafter defined).

             (p)    "TRANSACTION PERSON" with respect to a Transaction shall
                    mean (i) any Person who (x) is or will become an Acquiring
                    Person or a Principal Party (as such term is hereinafter
                    defined) if the Transaction were to be consummated and
                    (y) directly or indirectly proposed or nominated a director
                    of the Company which director is in office at the time of
                    consideration of the Transaction, or (ii) an Affiliate or
                    Associate of such a Person.

SECTION 2.   APPOINTMENT OF RIGHTS AGENT.  The Company hereby appoints the
             Rights Agent to act as agent for the Company in accordance with
             the terms and conditions hereof, and the Rights Agent hereby
             accepts such appointment.  The Company may from time to time
             appoint such co-Rights Agents as it may deem necessary or
             desirable, upon ten (10) days prior written notice to the Rights
             Agent.  The Rights Agent shall have no duty to supervise, and
             shall in no event be liable for, the acts or omissions of any such
             co-Rights Agent.


                                          4.
<PAGE>

SECTION 3.   ISSUE OF RIGHTS CERTIFICATES.

             (a)    Until the earlier of (i) the Shares Acquisition Date or
                    (ii) the tenth Business Day (or such later date as may be
                    determined by action of the Board of Directors prior to such
                    time as any Person becomes an Acquiring Person) after the
                    date of the commencement (determined in accordance with
                    Rule 14d-2 under the Exchange Act) by any Person (other than
                    the Company, any Subsidiary of the Company, any employee
                    benefit plan of the Company or of any Subsidiary of the
                    Company or any entity holding Common Shares for or pursuant
                    to the terms of any such plan) of, or of the first public
                    announcement of the intention of any Person (other than the
                    Company, any Subsidiary of the Company, any employee benefit
                    plan of the Company or of any Subsidiary of the Company or
                    any entity holding Common Shares for or pursuant to the
                    terms of any such plan) to commence, a tender or exchange
                    offer (which intention to commence remains in effect for
                    five Business Days after such announcement), the
                    consummation of which would result in any Person becoming an
                    Acquiring Person (including any such date which is after the
                    date of this Agreement and prior to the issuance of the
                    Rights, the earlier of such dates being herein referred to
                    as the "Distribution Date"), (x) the Rights will be
                    evidenced by the certificates for Common Shares registered
                    in the names of the holders thereof (which certificates
                    shall also be deemed to be Rights Certificates) and not by
                    separate Rights Certificates, and (y) the Rights (and the
                    right to receive Rights Certificates therefor) will be
                    transferable only in connection with the transfer of Common
                    Shares.  As soon as practicable after the Distribution Date,
                    the Company will prepare and execute, the Rights Agent will
                    countersign, and the Company will send or cause to be sent
                    (and the Rights Agent will, if requested, send) by
                    first-class, insured, postage-prepaid mail, to each record
                    holder of Common Shares as of the Close of Business on the
                    Distribution Date, at the address of such holder shown on
                    the records of the Company, a Rights Certificate, in
                    substantially the form of Exhibit A hereto (a "Rights
                    Certificate"), evidencing one Right for each Common Share so
                    held, subject to the adjustment provisions of Section 11 of
                    this Agreement.  As of the Distribution Date, the Rights
                    will be evidenced solely by such Rights Certificates.

             (b)    On the Record Date, or as soon as practicable thereafter,
                    the Company will send (directly or through the Rights Agent
                    or its transfer agent) a copy of a Summary of Rights to
                    Purchase Common Shares, in substantially the form of
                    Exhibit B hereto (the "Summary of Rights"), by first-class,
                    postage-prepaid mail, to each record holder of Common Shares
                    as of the Close of Business on the Record Date, at the
                    address of such holder shown on the records of the Company.
                    With respect to certificates for Common Shares outstanding
                    as of the Record Date, until the Distribution Date, the
                    Rights will be evidenced by such certificates registered in
                    the names of the holders thereof.  Until the Distribution
                    Date (or the earlier of the


                                          5.
<PAGE>

                    Redemption Date and the Final Expiration Date), the
                    surrender for transfer of any certificate for Common Shares
                    outstanding on the Record Date shall also constitute the
                    transfer of the Rights associated with the Common Shares
                    represented thereby.

             (c)    Certificates for Common Shares which become outstanding
                    (including, without limitation, reacquired Common Shares
                    referred to in the last sentence of this paragraph (c))
                    after the Record Date but prior to the earliest of the
                    Distribution Date, the Redemption Date or the Final
                    Expiration Date shall have impressed on, printed on, written
                    on or otherwise affixed to them the following legend:

                           This certificate also evidences and entitles the
                           holder hereof to certain rights as set forth in a
                           Rights Agreement between Adaptive Broadband
                           Corporation (the "Company") and BankBoston, N.A. as
                           Rights Agent (the "Rights Agent"), dated as of July
                           21, 1999, as amended from time to time (the "Rights
                           Agreement"), the terms of which are hereby
                           incorporated herein by reference and a copy of which
                           is on file at the principal executive offices of the
                           Company.  Under certain circumstances, as set forth
                           in the Rights Agreement, such Rights will be
                           evidenced by separate certificates and will no
                           longer be evidenced by this certificate.  The
                           Company will mail to the holder of this certificate
                           a copy of the Rights Agreement without charge after
                           receipt of a written request therefor.  As described
                           in the Rights Agreement, Rights issued to any Person
                           who becomes an Acquiring Person or an Affiliate or
                           Associate thereof (as defined in the Rights
                           Agreement) and certain related persons, whether
                           currently held by or on behalf of such Person or by
                           any subsequent holder, shall become null and void.

                    With respect to such certificates containing the foregoing
                    legend, until the Distribution Date, the Rights associated
                    with the Common Shares represented by such certificates
                    shall be evidenced by such certificates alone, and the
                    surrender for transfer of any such certificate shall also
                    constitute the transfer of the Rights associated with the
                    Common Shares represented thereby.  In the event that the
                    Company purchases or acquires any Common Shares after the
                    Record Date but prior to the Distribution Date, any Rights
                    associated with such Common Shares shall be deemed canceled
                    and retired so that the Company shall not be entitled to
                    exercise any Rights associated with the Common Shares which
                    are no longer outstanding.  Notwithstanding this Section
                    3(c), the omission of a legend shall not affect the
                    enforceability of any part of this Agreement or the rights
                    of any holder of the Rights.


                                          6.
<PAGE>

SECTION 4.   FORM OF RIGHTS CERTIFICATES.

             (a)    The Rights Certificates (and the form of election to
                    purchase Common Shares, the form of assignment and the form
                    of certification to be printed on the reverse thereof) shall
                    be substantially the same as Exhibit A hereto and may have
                    such marks of identification or designation and such
                    legends, summaries or endorsements printed thereon as the
                    Company may deem appropriate and as are not inconsistent
                    with the provisions of this Agreement, or as may be required
                    to comply with any applicable law or with any rule or
                    regulation made pursuant thereto or with any rule or
                    regulation of any stock exchange on which the Rights may
                    from time to time be listed, or to conform to usage.
                    Subject to the provisions of Sections 7, 11 and 22 hereof,
                    the Rights Certificates shall entitle the holders thereof to
                    purchase such number of Common Shares as shall be set forth
                    therein at the price per Common Share set forth therein (the
                    "Purchase Price"), but the number of such Common Shares and
                    the Purchase Price shall be subject to adjustment as
                    provided herein.

             (b)    Any Rights Certificate issued pursuant to Section 3(a) or
                    Section 22 hereof that represents Rights which are null and
                    void pursuant to Section 11(a)(ii) hereof and any Rights
                    Certificate issued pursuant to Section 6 or Section 11
                    hereof upon transfer, exchange, replacement or adjustment of
                    any other Rights Certificate referred to in this sentence,
                    shall contain (to the extent feasible) the following legend:

                           The Rights represented by this Rights Certificate
                           are or were beneficially owned by a Person who was
                           or became an Acquiring Person or an Affiliate or
                           Associate of an Acquiring Person (as such terms are
                           defined in the Rights Agreement). Accordingly, this
                           Rights Certificate and the Rights represented hereby
                           are null and void.

                    The provisions of Section 11(a)(ii) hereof shall be
                    operative whether or not the foregoing legend is contained
                    on any such Rights Certificate.

SECTION 5.   COUNTERSIGNATURE AND REGISTRATION.  The Rights Certificates shall
             be executed on behalf of the Company by its Chairman of the Board,
             its Chief Executive Officer, its President, its Vice Chairman of
             the Board, its Chief Financial Officer, or any of its Vice
             Presidents, either manually or by facsimile signature, shall have
             affixed thereto the Company's seal or a facsimile thereof, and
             shall be attested by the Secretary or an Assistant Secretary of
             the Company, either manually or by facsimile signature.  The
             Rights Certificates shall be manually countersigned by the Rights
             Agent and shall not be valid for any purpose unless countersigned.
             In case any officer of the Company who shall have signed any of
             the Rights Certificates shall cease to be such officer of the
             Company before countersignature by the Rights Agent and issuance
             and delivery by the Company, such Rights


                                          7.
<PAGE>

             Certificates, nevertheless, may be countersigned by the Rights
             Agent and issued and delivered by the Company with the same force
             and effect as though the person who signed such Rights
             Certificates had not ceased to be such officer of the Company; and
             any Rights Certificate may be signed on behalf of the Company by
             any person who, at the actual date of the execution of such Rights
             Certificate, shall be a proper officer of the Company to sign such
             Rights Certificate, although at the date of the execution of this
             Agreement any such person was not such an officer.

             Following the Distribution Date, the Rights Agent will keep or
             cause to be kept, at its office designated for such purpose, books
             for registration and transfer of the Rights Certificates issued
             hereunder.  Such books shall show the names and addresses of the
             respective holders of the Rights Certificates, the number of
             Rights evidenced on its face by each of the Rights Certificates
             and the date of each of the Rights Certificates.

SECTION 6.   TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF RIGHTS
             CERTIFICATES; MUTILATED, DESTROYED, LOST OR STOLEN RIGHTS
             CERTIFICATES.  Subject to the provisions of Section 11(a)(ii),
             Section 14 and Section 24 hereof, at any time after the Close of
             Business on the Distribution Date, and at or prior to the Close of
             Business on the earlier of the Redemption Date or the Final
             Expiration Date, any Rights Certificate or Rights Certificates may
             be transferred, split up, combined or exchanged for another Rights
             Certificate or Rights Certificates, entitling the registered
             holder to purchase a like number of Common Shares as the Rights
             Certificate or Rights Certificates surrendered then entitled such
             holder to purchase.  Any registered holder desiring to transfer,
             split up, combine or exchange any Rights Certificate or Rights
             Certificates shall make such request in writing delivered to the
             Rights Agent, and shall surrender the Rights Certificate or Rights
             Certificates to be transferred, split up, combined or exchanged at
             the office of the Rights Agent designated for such purpose.
             Neither the Rights Agent nor the Company shall be obligated to
             take any action whatsoever with respect to the transfer of any
             such surrendered Rights Certificate until the registered holder
             shall have completed and signed the certificate contained in the
             form of assignment on the reverse side of such Rights Certificate
             and shall have provided such additional evidence of the identity
             of the Beneficial Owner (or former Beneficial Owner) or Affiliates
             or Associates thereof as the Company shall reasonably request.
             Thereupon the Rights Agent shall, subject to Section 11(a)(ii),
             Section 14 and Section 24 hereof, countersign and deliver to the
             person entitled thereto a Rights Certificate or Rights
             Certificates, as the case may be, as so requested.  The Company
             may require payment of a sum sufficient to cover any tax or
             governmental charge that may be imposed in connection with any
             transfer, split up, combination or exchange of Rights
             Certificates.

             Upon receipt by the Company and the Rights Agent of evidence
             reasonably satisfactory to them of the loss, theft, destruction or
             mutilation of a Rights Certificate, and, in case of loss, theft or
             destruction, of indemnity or security reasonably satisfactory to
             them, and, at the Company's request, reimbursement to


                                          8.
<PAGE>

             the Company and the Rights Agent of all reasonable expenses
             incidental thereto, and upon surrender to the Rights Agent and
             cancellation of the Rights Certificate if mutilated, the Company
             will issue, execute and deliver a new Rights Certificate of like
             tenor to the Rights Agent for countersignature and delivery to the
             registered holder in lieu of the Rights Certificate so lost,
             stolen, destroyed or mutilated.

             Notwithstanding any other provisions hereof, the Company and the
             Rights Agent may amend this Agreement to provide for
             uncertificated Rights in addition to or in place of Rights
             evidenced by Rights Certificates.

SECTION 7.   EXERCISE OF RIGHTS; PURCHASE PRICE; EXPIRATION DATE OF RIGHTS.

             (a)    The registered holder of any Rights Certificate may exercise
                    the Rights evidenced thereby (except as otherwise provided
                    herein) in whole or in part at any time after the
                    Distribution Date upon surrender of the Rights Certificate,
                    with the form of election to purchase on the reverse side
                    thereof duly executed, to the Rights Agent at the office of
                    the Rights Agent designated for such purpose, together with
                    payment of the Purchase Price for each Common Share (or such
                    other number of shares or other securities) as to which the
                    Rights are exercised, at or prior to the earliest of (i) the
                    Close of Business on June 30, 2002 (the "Final Expiration
                    Date"), (ii) the time at which the Rights are redeemed as
                    provided in Section 23 hereof (the "Redemption Date") or
                    (iii) the time at which such Rights are exchanged as
                    provided in Section 24 hereof.

                    In lieu of issuing Common Shares in accordance with the
                    first paragraph of Section 7(a) hereof, the Company may, if
                    a majority of the Board of Directors then in office
                    determines that such action is necessary or appropriate and
                    not contrary to the interests of holders of Rights, elect to
                    (and, in the event that there are not sufficient treasury
                    shares and authorized but unissued Common Shares to permit
                    the exercise in full of the Rights in accordance with the
                    foregoing paragraph, the Company shall) take all such action
                    as may be necessary to authorize, issue or pay, upon the
                    exercise of the Rights, cash (including by way of a
                    reduction of the Purchase Price), property, preferred stock
                    of the Company, other securities or any combination thereof
                    having an aggregate value equal to the value of the Common
                    Shares which otherwise would have been issuable pursuant to
                    the first paragraph of Section 7(a) hereof, which aggregate
                    value shall be determined by a nationally recognized
                    investment banking firm selected by a majority of members of
                    the Board of Directors then in office.  For purposes of the
                    preceding sentence, the value of the Common Shares shall be
                    determined pursuant to Section 11(d) hereof.  Any such
                    election by the Board of Directors must be made within 60
                    days following the Distribution Date.  Following the
                    Distribution Date, a majority of the Board of Directors then
                    in office may suspend the exercisability of the Rights for a
                    period of up to 60 days following the


                                          9.
<PAGE>

                    Distribution Date to the extent that such directors have not
                    determined whether to exercise their rights of election
                    under this paragraph Section 7(a).  In the event of any such
                    suspension, the Company shall issue a public announcement
                    stating that the exercisability of the Rights has been
                    temporarily suspended.

             (b)    The purchase price (the "Purchase Price") for each Common
                    Share (or cash, property, preferred stock of the Company,
                    other securities or combination thereof substituted therefor
                    in accordance with the second paragraph of Section 7(a))
                    pursuant to the exercise of a Right shall initially be
                    $80.00 and shall be subject to adjustment from time to time
                    as provided in Sections 11 and 13 hereof and shall be
                    payable in lawful money of the United States of America in
                    accordance with paragraph (c) below.

             (c)    Subject to the second paragraph of Section 7(a), upon
                    receipt of a Rights Certificate representing exercisable
                    Rights, with the form of election to purchase set forth on
                    the reverse thereof (or a facsimile thereof) and the
                    Certificate contained therein duly executed, accompanied by
                    payment of the Purchase Price for the Common Shares (or
                    cash, property, preferred stock of the Company, other
                    securities or any combination thereof substituted therefor
                    in accordance with the second paragraph of Section 7(a)) to
                    be purchased and an amount equal to any applicable transfer
                    tax in cash, or by check, bank draft or money order payable
                    to the order of the Company, the Rights Agent shall
                    thereupon promptly (i) requisition from any transfer agent
                    of the Common Shares (or make available, if the Rights Agent
                    is the transfer agent) certificates for the number of Common
                    Shares (or, when appropriate, from the Company cash,
                    property, preferred stock of the Company, other securities
                    or any combination thereof) to be purchased and the Company
                    hereby irrevocably authorizes and directs its transfer agent
                    to comply with all such requests, (ii) when appropriate,
                    requisition from the Company the amount of cash to be paid
                    in lieu of issuance of fractional shares in accordance with
                    Section 14, (iii) promptly after receipt of such Common
                    Shares certificates or other cash, property, preferred stock
                    of the Company, other securities or any combination thereof
                    substituted therefor in accordance with the second paragraph
                    of Section 7(a), cause the same to be delivered to or upon
                    the order of the registered holder of such Rights
                    Certificate, registered in such name or names as may be
                    designated by such holder and (iv) when appropriate, after
                    receipt, promptly deliver such cash to or upon the order of
                    the registered holder of such Rights Certificate.
                    Notwithstanding the foregoing provisions of this Section
                    7(c), the Company may suspend the issuance of Common Shares
                    upon exercise of a Right for a reasonable period, not in
                    excess of 90 days, during wich the Company seeks to register
                    under the Securities Act of 1933, as amended, and any
                    applicable securities law of any other jurisdiction the
                    Common Shares or other securities to be issued pursuant to
                    the Rights.


                                         10.
<PAGE>

                    In addition, in the case of an exercise of the Rights by a
                    holder pursuant to Section 11(a)(ii) hereof, the Rights
                    Agent shall return such Rights Certificate to the registered
                    holder thereof after imprinting, stamping or otherwise
                    indicating thereon that the rights represented by such
                    Rights Certificate no longer include the rights provided by
                    Section 11(a)(ii) hereof, and, if fewer than all the Rights
                    represented by such Rights Certificate were so exercised,
                    the Rights Agent shall indicate on the Rights Certificate
                    the number of Rights represented thereby which continue to
                    include the rights provided by Section 11(a)(ii) hereof.

             (d)    Notwithstanding anything in this Agreement to the contrary,
                    neither the Rights Agent nor the Company shall be obligated
                    to undertake any action with respect to a registered holder
                    upon the occurrence of any purported exercise as set forth
                    in this Section 7 unless such registered holder shall have
                    (i) completed and signed the certification following the
                    form of election to purchase set forth on the reverse side
                    of the Rights Certificate surrendered for such exercise and
                    (ii) provided such additional evidence of the identity of
                    the Beneficial Owner (or former Beneficial Owner) or
                    Affiliates or Associates thereof as the Company shall
                    reasonably request.

SECTION 8.   CANCELLATION AND DESTRUCTION OF RIGHTS CERTIFICATES.  All Rights
             Certificates surrendered for the purpose of exercise, transfer,
             split up, combination or exchange shall, if surrendered to the
             Company or to any of its agents, be delivered to the Rights Agent
             for cancellation or in canceled form, or, if delivered or
             surrendered to the Rights Agent, shall be canceled by it, and no
             Rights Certificates shall be issued in lieu thereof except as
             expressly permitted by any of the provisions of this Agreement.
             The Company shall deliver to the Rights Agent for cancellation and
             retirement, and the Rights Agent shall so cancel and retire, any
             other Rights Certificate purchased or acquired by the Company
             otherwise than upon the exercise thereof.  The Rights Agent shall
             deliver all canceled Rights Certificates to the Company, or shall,
             at the written request of the Company, destroy such canceled
             Rights Certificates, and in such case shall deliver a certificate
             of destruction thereof to the Company.

SECTION 9.   AVAILABILITY OF COMMON SHARES.  Subject to the second paragraph of
             Section 7(a), so long as the Common Shares issuable upon the
             exercise of Rights may be listed on any national securities
             exchange, the Company shall use its best efforts to cause, from
             and after such time as the Rights become exercisable, all Common
             Shares to be issued on such exchange upon official notice of
             issuance upon such exercise.  The Company covenants and agrees
             that it will take all such action as may be necessary to ensure
             that all Common Shares delivered upon exercise of Rights shall, at
             the time of delivery of the certificates for such Common Shares
             (subject to payment of the Purchase Price), be duly and validly
             authorized and issued and fully paid and nonassessable shares.
             The Company further covenants and agrees that it will pay when due
             and payable any and all federal and state transfer taxes and
             charges which may be payable in respect of the issuance or
             delivery of the Rights Certificates or of any Common Shares issued
             upon the


                                         11.
<PAGE>

             exercise of Rights.  The Company shall not, however, be required
             to pay any transfer tax which may be payable in respect of any
             transfer or delivery of Rights Certificates to a person other
             than, or the issuance or delivery of certificates for the Common
             Shares in a name other than that of, the registered holder of the
             Rights Certificate evidencing Rights surrendered for exercise or
             to issue or deliver any certificates for Common Shares upon the
             exercise of any Rights until any such tax shall have been paid
             (any such tax being payable by the holder of such Rights
             Certificate at the time of surrender) or until it has been
             established to the Company's satisfaction that no such tax is due.

             As soon as practicable after the Shares Acquisition Date, the
             Company shall use its best efforts to:

                    (i)    prepare and file a registration statement under the
                           Securities Act of 1933, as amended (the "Act"), with
                           respect to the Rights and the securities purchasable
                           upon exercise of the Rights on an appropriate form,
                           will use its best efforts to cause such registration
                           statement to become effective as soon as practicable
                           after such filing and will use its best efforts to
                           cause such registration statement to remain
                           effective (with a prospectus at all times meeting
                           the requirements of the Act) until the Final
                           Expiration Date; and

                    (ii)   use its best efforts to qualify or register the
                           Rights and the securities purchasable upon exercise
                           of the Rights under the blue sky laws of such
                           jurisdictions as may be necessary or appropriate.

SECTION 10.  COMMON SHARES RECORD DATE.  Each person in whose name any
             certificate for Common Shares or other securities is issued upon
             the exercise of Rights shall for all purposes be deemed to have
             become the holder of record of the Common Shares or other
             securities represented thereby on, and such certificate shall be
             dated, the date upon which the Rights Certificate evidencing such
             Rights was duly surrendered with the forms of election and
             certification duly executed and payment of the Purchase Price (and
             any applicable transfer taxes) was made; PROVIDED, HOWEVER, that
             if the date of such surrender and payment is a date upon which the
             Common Shares or other securities transfer books of the Company
             are closed, such person shall be deemed to have become the record
             holder of such shares on, and such certificate shall be dated, the
             next succeeding Business Day on which the Common Shares or other
             securities transfer books of the Company are open.  Prior to the
             exercise of the Rights evidenced thereby, the holder of a Rights
             Certificate, as such, shall not be entitled to any rights of a
             holder of Common Shares for which the Rights shall be exercisable,
             including, without limitation, the right to vote, to receive
             dividends or other distributions or to exercise any preemptive
             rights, and shall not be entitled to receive any notice of any
             proceedings of the Company, except as provided herein.


                                         12.
<PAGE>

SECTION 11.  ADJUSTMENT OF PURCHASE PRICE, NUMBER OF SHARES OR NUMBER OF
             RIGHTS.  The Purchase Price, the number of Common Shares covered
             by each Right and the number of Rights outstanding are subject to
             adjustment from time to time as provided in this Section 11.

             (a)

                    (i)    In the event the Company shall at any time after the
                           date of this Agreement (A) declare a dividend on the
                           Common Shares payable in Common Shares,
                           (B) subdivide the outstanding Common Shares,
                           (C) combine the outstanding Common Shares into a
                           smaller number of Common Shares or (D) issue any
                           shares of its capital stock in a reclassification of
                           the Common Shares (including any such
                           reclassification in connection with a consolidation
                           or merger in which the Company is the continuing or
                           surviving corporation), except as otherwise provided
                           in this Section 11(a), the Purchase Price in effect
                           at the time of the record date for such dividend or
                           of the effective date of such subdivision,
                           combination or reclassification, and the number and
                           kind of shares of capital stock issuable on such
                           date, shall be proportionately adjusted so that the
                           holder of any Rights exercised after such time shall
                           be entitled to receive the aggregate number and kind
                           of shares of capital stock which, if such Rights had
                           been exercised immediately prior to such date and at
                           a time when the Common Shares transfer books of the
                           Company were open, such holder would have owned upon
                           such exercise and been entitled to receive by virtue
                           of such dividend, subdivision, combination or
                           reclassification; PROVIDED, HOWEVER, that in no
                           event shall the consideration to be paid upon the
                           exercise of one Right be less than the aggregate par
                           value of the shares of capital stock of the Company
                           issuable upon exercise of one Right.  If an event
                           occurs which would require an adjustment under both
                           Section 11(a)(i) and Section 11(a)(ii) hereof, the
                           adjustment provided for in this Section 11(a)(i)
                           shall be in addition to, and shall be made prior to
                           any adjustment required pursuant to
                           Section 11(a)(ii) hereof.

                    (ii)   Subject to Section 24 hereof and the provisions of
                           the next paragraph of this Section 11(a)(ii), in the
                           event any Person, alone or together with any of its
                           Affiliates and Associates, shall become an Acquiring
                           Person, each holder of a Right shall, for a period
                           of 60 days after the later of such time any Person
                           becomes an Acquiring Person or the effective date of
                           an appropriate registration statement under the Act
                           pursuant to Section 9 hereof (PROVIDED, HOWEVER
                           that, if at any time prior to the expiration or
                           termination of the Rights there shall be a temporary
                           restraining order, a preliminary injunction, an
                           injunction, or temporary suspension by the Board of
                           Directors, or similar obstacle to


                                         13.
<PAGE>

                           exercise of the Rights (the "Injunction") which
                           prevents exercise of the Rights, a new 60-day period
                           shall commence on the date the Injunction is
                           removed), have a right to receive, upon exercise
                           thereof at a price equal to the then current
                           Purchase Price multiplied by the number of Common
                           Shares for which a Right is then exercisable, in
                           accordance with the terms of this Agreement, such
                           number of Common Shares as shall equal the result
                           obtained by (A) multiplying the then current
                           Purchase Price by the number of Common Shares for
                           which a Right is then exercisable and dividing that
                           product by (B) 50% of the then current per share
                           market price of the Common Shares (determined
                           pursuant to Section 11(d) hereof) on the date such
                           Person became an Acquiring Person; PROVIDED,
                           HOWEVER, that if the transaction that would
                           otherwise give rise to the foregoing adjustment is
                           also subject to the provisions of Section 13 hereof,
                           then only the provisions of Section 13 hereof shall
                           apply and no adjustment shall be made pursuant to
                           this Section 11(a)(ii).  In the event that any
                           Person shall become an Acquiring Person and the
                           Rights shall then be outstanding, the Company shall
                           not take any action which would eliminate or
                           diminish the benefits intended to be afforded by the
                           Rights.

                           Notwithstanding anything in this Agreement to the
                           contrary, from and after the time any Person becomes
                           an Acquiring Person, any Rights beneficially owned
                           by (i) such Acquiring Person or an Associate or
                           Affiliate of such Acquiring Person, (ii) a
                           transferee of such Acquiring Person (or of any such
                           Associate or Affiliate) who becomes a transferee
                           after the Acquiring Person became such, or (iii) a
                           transferee of such Acquiring Person (or of any such
                           Associate or Affiliate) who becomes a transferee
                           prior to or concurrently with the Acquiring Person's
                           becoming such and receives such Rights pursuant to
                           either (A) a transfer (whether or not for
                           consideration) from the Acquiring Person to holders
                           of equity interests in such Acquiring Person or to
                           any Person with whom the Acquiring Person has any
                           continuing agreement, arrangement or understanding
                           regarding the transferred Rights or (B) a transfer
                           which the Board of Directors of the Company has
                           determined is part of a plan, arrangement or
                           understanding which has as a primary purpose or
                           effect the avoidance of this Section 11(a)(ii),
                           shall become null and void without any further
                           action and no holder of such Rights shall have any
                           rights whatsoever with respect to such Rights,
                           whether under any provision of this Agreement or
                           otherwise.  The Company shall use all reasonable
                           efforts to insure that the provisions of this
                           Section 11(a)(ii) and Section 4(b) hereof are
                           complied with, but shall have no liability to any
                           holder of Rights Certificates or other Person as a
                           result of its failure to make any determinations
                           with


                                         14.
<PAGE>

                           respect to an Acquiring Person or its Affiliates,
                           Associates or transferees hereunder.  No Rights
                           Certificate shall be issued at any time upon the
                           transfer of any Rights to an Acquiring Person whose
                           Rights would be void pursuant to the preceding
                           sentence or any Associate or Affiliate thereof or to
                           any nominee of such Acquiring Person, Associate or
                           Affiliate; and any Rights Certificate delivered to
                           the Rights Agent for transfer to an Acquiring Person
                           whose Rights would be void pursuant to the preceding
                           sentence shall be canceled.

                    (iii)  In lieu of issuing Common Shares in accordance with
                           Section 11(a)(ii) hereof, the Company may, if a
                           majority of the Board of Directors then in office
                           determines that such action is necessary or
                           appropriate and not contrary to the interests of
                           holders of Rights, elect to (and, in the event that
                           the Board of Directors has not exercised the
                           exchange right contained in Section 24(c) hereof and
                           there are not sufficient treasury shares and
                           authorized but unissued Common Shares to permit the
                           exercise in full of the Rights in accordance with
                           the foregoing subparagraph (ii), the Company shall)
                           take all such action as may be necessary to
                           authorize, issue or pay, upon the exercise of the
                           Rights, cash (including by way of a reduction of the
                           Purchase Price), property, preferred stock of the
                           Company, other securities or any combination thereof
                           having an aggregate value equal to the value of the
                           Common Shares which otherwise would have been
                           issuable pursuant to Section 11(a)(ii) hereof, which
                           aggregate value shall be determined by a nationally
                           recognized investment banking firm selected by a
                           majority of the Board of Directors then in office.
                           For purposes of the preceding sentence, the value of
                           the Common Shares shall be determined pursuant to
                           Section 11(d) hereof.  Any such election by the
                           Board of Directors must be made within 60 days
                           following the date on which the event described in
                           Section 11(a)(ii) hereof shall have occurred.
                           Following the occurrence of the event described in
                           Section 11(a)(ii) hereof, a majority of the Board of
                           Directors then in office may suspend the
                           exercisability of the Rights for a period of up to
                           60 days following the date on which the event
                           described in Section 11(a)(ii) hereof shall have
                           occurred to the extent that such directors have not
                           determined whether to exercise their rights of
                           election under this Section 11(a)(iii).  In the
                           event of any such suspension, the Company shall
                           issue a public announcement stating that the
                           exercisability of the Rights has been temporarily
                           suspended.

             (b)    In case the Company shall fix a record date for the issuance
                    of rights, options or warrants to all holders of Common
                    Shares entitling them (for a period expiring with 45
                    calendar days after such record date) to subscribe for or
                    purchase Common Shares (or shares having the same
                    designations


                                         15.
<PAGE>

                    and the powers, preferences and rights, and the
                    qualifications, limitations and restrictions as the Common
                    Shares ("equivalent common shares")) or securities
                    convertible into Common Shares or equivalent shares of
                    preferred stock of the Company at a price per Common Share
                    or equivalent share of preferred stock of the Company (or
                    having a conversion price per share, if a security
                    convertible into Common Shares or equivalent shares of
                    preferred stock of the Company) less than the then current
                    per share market price of the Common Shares (as such term is
                    hereinafter defined) on such record date, the Purchase Price
                    to be in effect after such record date shall be determined
                    by multiplying the Purchase Price in effect immediately
                    prior to such record date by a fraction, the numerator of
                    which shall be the number of Common Shares outstanding on
                    such record date plus the number of Common Shares which the
                    aggregate offering price of the total number of Common
                    Shares and/or equivalent shares of preferred stock of the
                    Company so to be offered (and/or the aggregate initial
                    conversion price of the convertible securities so to be
                    offered) would purchase at such current market price and the
                    denominator of which shall be the number of Common Shares
                    outstanding on such record date plus the number of
                    additional Common Shares and/or equivalent shares of
                    preferred stock of the Company to be offered for
                    subscription or purchase (or into which the convertible
                    securities so to be offered are initially convertible);
                    PROVIDED, HOWEVER, that in no event shall the consideration
                    to be paid upon the exercise of one Right be less than the
                    aggregate par value of the shares of capital stock of the
                    Company issuable upon exercise of one Right.  In case such
                    subscription price may be paid in a consideration part or
                    all of which shall be in a form other than cash, the value
                    of such consideration shall be as determined in good faith
                    by the Board of Directors of the Company, whose
                    determination shall be described in a statement filed with
                    the Rights Agent.  Common Shares owned by or held for the
                    account of the Company shall not be deemed outstanding for
                    the purpose of any such computation.  Such adjustment shall
                    be made successively whenever such a record date is fixed;
                    and in the event that such rights, options or warrants are
                    not so issued, the Purchase Price shall be adjusted to be
                    the Purchase Price which would then be in effect if such
                    record date had not been fixed.

             (c)    In case the Company shall fix a record date for the making
                    of a distribution to all holders of the Common Shares
                    (including any such distribution made in connection with a
                    consolidation or merger in which the Company is the
                    continuing or surviving corporation) of evidences of
                    indebtedness or assets (other than a regular quarterly cash
                    dividend or a dividend payable in Common Shares) or
                    subscription rights or warrants (excluding those referred to
                    in Section 11(b) hereof), the Purchase Price to be in effect
                    after such record date shall be determined by multiplying
                    the Purchase Price in effect immediately prior to such
                    record date by a fraction, the numerator of which shall be
                    the then current per share market price of the Common Shares
                    (as such term is hereinafter defined) on such


                                         16.
<PAGE>

                    record date, less the fair market value (as determined in
                    good faith by the Board of Directors of the Company, whose
                    determination shall be described in a statement filed with
                    the Rights Agent) of the portion of the assets or evidences
                    of indebtedness so to be distributed or of such subscription
                    rights or warrants applicable to one Common Share and the
                    denominator of which shall be such current per share market
                    price of the Common Shares; PROVIDED, HOWEVER, that in no
                    event shall the consideration to be paid upon the exercise
                    of one Right be less than the aggregate par value of the
                    shares of capital stock of the Company to be issued upon
                    exercise of one Right.  Such adjustments shall be made
                    successively whenever such a record date is fixed; and in
                    the event that such distribution is not so made, the
                    Purchase Price shall again be adjusted to be the Purchase
                    Price which would then be in effect if such record date had
                    not been fixed.

             (d)

                    (i)    For the purpose of any computation hereunder, the
                           "current per share market price" of any security (a
                           "Security" for the purpose of this Section 11(d)(i))
                           on any date shall be deemed to be the average of the
                           daily closing prices per share of such Security for
                           the 30 consecutive Trading Days (as such term is
                           hereinafter defined) immediately prior to such date;
                           PROVIDED, HOWEVER, that in the event that the
                           current per share market price of the Security is
                           determined during a period following the
                           announcement by the issuer of such Security of (A) a
                           dividend or distribution on such Security payable in
                           shares of such Security or securities convertible
                           into such shares, or (B) any subdivision,
                           combination or reclassification of such Security or
                           securities convertible into such shares, or (C) any
                           subdivision, combination or reclassification of such
                           Security and prior to the expiration of 30 Trading
                           Days after the ex-dividend date for such dividend or
                           distribution, or the record date for such
                           subdivision, combination or reclassification, then,
                           and in each such case, the current per share market
                           price shall be appropriately adjusted to reflect the
                           current market price per share equivalent of such
                           Security.  The closing price for each day shall be
                           the last sale price, regular way, or, in case no
                           such sale takes place on such day, the average of
                           the closing bid and asked prices, regular way, in
                           either case as reported in the principal
                           consolidated transaction reporting system with
                           respect to securities listed or admitted to trading
                           on the New York Stock Exchange or, if the Security
                           is not listed or admitted to trading on the New York
                           Stock Exchange, as reported in the principal
                           consolidated transaction reporting system with
                           respect to securities listed on the principal
                           national securities exchange on which the Security
                           is


                                         17.
<PAGE>

                           listed or admitted to trading or as reported on the
                           Nasdaq National Market or, if the Security is not
                           listed or admitted to trading on any national
                           securities exchange or reported on the Nasdaq
                           National Market, the last quoted price or, if not so
                           quoted, the average of the high bid and low asked
                           prices in the over-the-counter market, as reported
                           by the National Association of Securities Dealers,
                           Inc. Automated Quotations System ("Nasdaq") or such
                           other system then in use, or, if on any such date
                           the Security is not quoted by any such organization,
                           the average of the closing bid and asked prices as
                           furnished by a professional market maker making a
                           market in the Security selected by the Board of
                           Directors of the Company or, if on any such date no
                           professional market maker is making a market in the
                           Security, the price as determined in good faith by
                           the Board of Directors.  The term "Trading Day"
                           shall mean a day on which the principal national
                           securities exchange on which the Security is listed
                           or admitted to trading is open for the transaction
                           of business or, if the Security is not listed or
                           admitted to trading on any national securities
                           exchange, a Business Day.

                    (ii)   For the purpose of any computation hereunder, the
                           "current per share market price" of the Common
                           Shares shall be determined in accordance with the
                           method set forth in Section 11(d)(i) hereof.  If the
                           Common Shares are not publicly traded, the "current
                           per share market price" of the Common Shares shall
                           mean the fair value per share as determined in good
                           faith by the Board of Directors of the Company,
                           whose determination shall be described in a
                           statement filed with the Rights Agent.

             (e)    No adjustment in the Purchase Price shall be required unless
                    such adjustment would require an increase or decrease of at
                    least 1% in the Purchase Price; PROVIDED, HOWEVER, that any
                    adjustments which by reason of this Section 11(e) are not
                    required to be made shall be carried forward and taken into
                    account in any subsequent adjustment.  All calculations
                    under this Section 11 shall be made to the nearest cent or
                    to the nearest one ten-thousandth of a Common Share or other
                    share or security as the case may be.  Notwithstanding the
                    first sentence of this Section 11(e), any adjustment
                    required by this Section 11 shall be made no later than the
                    earlier of (i) three years from the date of the transaction
                    which requires such adjustment or (ii) the date of the
                    expiration of the right to exercise any Rights.

             (f)    If as a result of an adjustment made pursuant to
                    Section 11(a) hereof, the holder of any Rights thereafter
                    exercised shall become entitled to receive any shares of
                    capital stock of the Company other than Common Shares,
                    thereafter the number of such other shares so receivable
                    upon exercise of any Rights shall be subject to adjustment
                    from time to time in a manner and on terms as nearly
                    equivalent as practicable to the provisions with


                                         18.
<PAGE>

                    respect to the Common Shares contained in Sections 11(a)
                    through 11(c) hereof, inclusive, and the provisions of
                    Sections 7, 9, 10, 13 and 14 hereof with respect to the
                    Common Shares shall apply on like terms to any such other
                    shares.

             (g)    All Rights originally issued by the Company subsequent to
                    any adjustment made to the Purchase Price hereunder shall
                    evidence the right to purchase, at the adjusted Purchase
                    Price, the number of Common Shares purchasable from time to
                    time hereunder upon exercise of the Rights, all subject to
                    further adjustment as provided herein.

             (h)    Unless the Company shall have exercised its election as
                    provided in Section 11(i) hereof, upon each adjustment of
                    the Purchase Price as a result of the calculations made in
                    Section 11(b) and Section 11(c) hereof, each Right
                    outstanding immediately prior to the making of such
                    adjustment shall thereafter evidence the right to purchase,
                    at the adjusted Purchase Price, that number of Common Shares
                    (calculated to the nearest one ten-thousandth of a Common
                    Share) obtained by (i) multiplying (x) the number of Common
                    Shares covered by a Right immediately prior to this
                    adjustment by (y) the Purchase Price in effect immediately
                    prior to such adjustment of the Purchase Price and
                    (ii) dividing the product so obtained by the Purchase Price
                    in effect immediately after such adjustment of the Purchase
                    Price.

             (i)    The Company may elect on or after the date of any adjustment
                    of the Purchase Price to adjust the number of Rights, in
                    substitution for any adjustment in the number of Common
                    Shares purchasable upon the exercise of a Right.  Each of
                    the Rights outstanding after such adjustment of the number
                    of Rights shall be exercisable for the number of Common
                    Shares for which a Right was exercisable immediately prior
                    to such adjustment.  Each Right held of record prior to such
                    adjustment of the number of Rights shall become that number
                    of Rights (calculated to the nearest one ten-thousandth)
                    obtained by dividing the Purchase Price in effect
                    immediately prior to adjustment of the Purchase Price by the
                    Purchase Price in effect immediately after adjustment of the
                    Purchase Price.  The Company shall make a public
                    announcement of its election to adjust the number of Rights,
                    indicating the record date for the adjustment, and, if known
                    at the time, the amount of the adjustment to be made.  This
                    record date may be the date on which the Purchase Price is
                    adjusted or any day thereafter, but, if the Rights
                    Certificates have been issued, shall be at least 10 days
                    later than the date of the public announcement.  If Rights
                    Certificates have been issued, upon each adjustment of the
                    number of Rights pursuant to this Section 11(i), the Company
                    shall, as promptly as practicable, cause to be distributed
                    to holders of record of Rights Certificates on such record
                    date Rights Certificates evidencing, subject to Section 14
                    hereof, the additional Rights to which such holders shall be
                    entitled as a result of such adjustment, or, at the option
                    of the Company,


                                         19.
<PAGE>

                    shall cause to be distributed to such holders of record in
                    substitution and replacement for the Rights Certificates
                    held by such holders prior to the date of adjustment, and
                    upon surrender thereof, if required by the Company, new
                    Rights Certificates evidencing all the Rights to which such
                    holders shall be entitled after such adjustment.  Rights
                    Certificates so to be distributed shall be issued, executed
                    and countersigned in the manner provided for herein and
                    shall be registered in the names of the holders of record of
                    Rights Certificates on the record date specified in the
                    public announcement.

             (j)    Irrespective of any adjustment or change in the Purchase
                    Price or the number of Common Shares issuable upon the
                    exercise of the Rights, the Rights Certificates theretofore
                    and thereafter issued may continue to express the Purchase
                    Price and the number of Common Shares which were expressed
                    in the initial Rights Certificates issued hereunder.

             (k)    Before taking any action that would cause an adjustment
                    reducing the Purchase Price below the then par value, if
                    any, of the Common Shares issuable upon exercise of the
                    Rights, the Company shall take any corporate action which
                    may, in the opinion of its counsel, be necessary in order
                    that the Company may validly and legally issue fully paid
                    and nonassessable Common Shares at such adjusted Purchase
                    Price.

             (l)    In any case in which this Section 11 shall require that an
                    adjustment in the Purchase Price be made effective as of a
                    record date for a specified event, the Company may elect to
                    defer until the occurrence of such event the issuing to the
                    holder of any Rights exercised after such record date of the
                    Common Shares and other capital stock or securities of the
                    Company, if any, issuable upon such exercise on the basis of
                    the Purchase Price in effect prior to such adjustment;
                    PROVIDED, HOWEVER, that the Company shall deliver to such
                    holder a due bill or other appropriate instrument evidencing
                    such holder's right to receive such additional shares upon
                    the occurrence of the event requiring such adjustment.

             (m)    The Company covenants and agrees that, after the
                    Distribution Date, it will not, except as permitted by
                    Section 23 or Section 27 hereof, take (or permit any
                    Subsidiary to take) any action the purpose of which is to,
                    or if at the time such action is taken it is reasonably
                    foreseeable that the effect of such action is to, materially
                    diminish or eliminate the benefits intended to be afforded
                    by the Rights.  Any such action taken by the Company during
                    any period after any Person becomes an Acquiring Person but
                    prior to the Distribution Date shall be null and void unless
                    such action could be taken under this Section 11(m) from and
                    after the Distribution Date.

             (n)    Anything in this Section 11 to the contrary notwithstanding,
                    the Company shall be entitled to make such reductions in the
                    Purchase Price, in addition to those adjustments expressly
                    required by this Section 11, as and to the


                                         20.
<PAGE>

                    extent that it in its sole discretion shall determine to be
                    advisable in order that any consolidation or subdivision of
                    the Common Shares, issuance wholly for cash of any Common
                    Shares at less than the current market price, issuance
                    wholly for cash of Common Shares or securities which by
                    their terms are convertible into or exchangeable for Common
                    Shares, dividends on Common Shares payable in Common Shares
                    or issuance of rights, options or warrants referred to
                    herein above in Section 11(b), hereinafter made by the
                    Company to holders of its Common Shares shall not be taxable
                    to such stockholders.

             (o)    The exercise of Rights under Section 11(a)(ii) hereof shall
                    only result in the loss of rights under Section 11(a)(ii)
                    hereof to the extent so exercised and shall not otherwise
                    affect the rights represented by the Rights under this
                    Agreement, including the rights represented by Section 13
                    hereof.

SECTION 12.  CERTIFICATE OF ADJUSTED PURCHASE PRICE OR NUMBER OF SHARES.
             Whenever an adjustment is made as provided in Sections 11 and 13
             hereof, the Company shall promptly (a) prepare a certificate
             setting forth such adjustment, and a brief statement of the facts
             accounting for such adjustment, (b) file with the Rights Agent and
             with each transfer agent for the Common Shares a copy of such
             certificate and (c) mail a brief summary thereof to each holder of
             a Rights Certificate in accordance with Section 25 hereof.  The
             Rights Agent shall be fully protected in relying on any such
             certificate and on any adjustment therein contained and shall not
             be deemed to have knowledge of any adjustment unless and until it
             shall have received such certificate.

SECTION 13.  CONSOLIDATION, MERGER OR SALE OR TRANSFER OF ASSETS OR EARNING
             POWER.

             (a)    In the event that, following the Shares Acquisition Date or,
                    if a Transaction is proposed, the Distribution Date,
                    directly or indirectly (x) the Company shall consolidate
                    with, or merge with and into, any Interested Stockholder, or
                    if in such merger or consolidation all holders of Common
                    Shares are not treated alike, any other Person, (y) any
                    Interested Person, or if in such merger or consolidation all
                    holders of Common Shares are not treated alike, any other
                    Person shall consolidate with the Company, or merge with and
                    into the Company, and the Company shall be the continuing or
                    surviving corporation of such merger (other than, in the
                    case of either transaction described in (x) or (y), a merger
                    or consolidation which would result in all of the voting
                    power represented by the securities of the Company
                    outstanding immediately prior thereto continuing to
                    represent (either by remaining outstanding or by being
                    converted into securities of the surviving entity) all of
                    the voting power represented by the securities of the
                    Company or such surviving entity outstanding immediately
                    after such merger or consolidation and the holders of such
                    securities not having changed as a result of such merger or
                    consolidation), or (z) the Company shall sell, mortgage or
                    otherwise transfer (or one or more of its subsidiaries shall
                    sell, mortgage or otherwise transfer), in one


                                         21.
<PAGE>

                    or more transactions, assets or earning power aggregating
                    more than 50% of the assets or earning power of the Company
                    and its subsidiaries (taken as a whole) to any Interested
                    Stockholder or Stockholders, or if in such transaction all
                    holders of Common Shares are not treated alike, any other
                    Person, (other than the Company or any Subsidiary of the
                    Company in one or more transactions each of which
                    individually and the aggregate does not violate
                    Section 13(d) hereof) then, and in each such case, proper
                    provision shall be made so that (i) each holder of a Right,
                    subject to Section 11(a)(ii) hereof, shall have the right to
                    receive, upon the exercise thereof at a price equal to the
                    then current Purchase Price multiplied by the number of
                    Common Shares for which a Right is then exercisable in
                    accordance with the terms of this Agreement, such number of
                    freely tradeable Common Shares of the Principal Party (as
                    such term is hereinafter defined), free and clear of liens,
                    rights of call or first refusal, encumbrances or other
                    adverse claims, as shall be equal to the result obtained by
                    (A) multiplying the then current Purchase Price by the
                    number of Common Shares for which a Right is then
                    exercisable (without taking into account any adjustment
                    previously made pursuant to Section 11(a)(ii) hereof) and
                    dividing that product by (B) 50% of the then current per
                    share market price of the Common Shares of such Principal
                    Party (determined pursuant to Section 11(d) hereof) on the
                    date of consummation of such consolidation, merger, sale or
                    transfer; (ii) such Principal Party shall thereafter be
                    liable for, and shall assume, by virtue of such
                    consolidation, merger, sale or transfer, all the obligations
                    and duties of the Company pursuant to this Agreement;
                    (iii) the term "Company" shall thereafter be deemed to refer
                    to such Principal Party, it being specifically intended that
                    the provisions of Section 11 hereof shall apply to such
                    Principal Party; and (iv) such Principal Party shall take
                    such steps (including, but not limited to, the reservation
                    of a sufficient number of shares of its Common Shares in
                    accordance with Section 9 hereof) in connection with such
                    consummation as may be necessary to assure that the
                    provisions hereof shall thereafter be applicable, as nearly
                    as reasonably may be, in relation to its Common Shares
                    thereafter deliverable upon the exercise of the Rights.

             (b)    "Principal Party" shall mean:

                    (i)    in the case of any transaction described in clause
                           (x) or (y) of the first sentence of Section 13(a)
                           hereof, the Person that is the issuer of any
                           securities into which Common Shares are converted in
                           such merger or consolidation, and if no securities
                           are so issued, the Person that is the other party to
                           the merger or consolidation (or, if applicable, the
                           Company, if it is the surviving corporation); and

                    (ii)   in the case of any transaction described in (z) of
                           the first sentence of Section 13(a) hereof, the
                           Person that is the party receiving the


                                         22.
<PAGE>

                           greatest portion of the assets or earning power
                           transferred pursuant to such transaction or
                           transactions;

                    PROVIDED, HOWEVER, that in any case, (1) if the Common
                    Shares of such Person are not at such time and have not been
                    continuously over the preceding 12-month period registered
                    under Section 12 of the Exchange Act, and such Person is a
                    direct or indirect subsidiary or Affiliate of another Person
                    the Common Shares of which are and have been so registered,
                    "Principal Party" shall refer to such other Person; (2) if
                    such Person is a subsidiary, directly or indirectly, or
                    Affiliate of more than one Person, the Common Shares of two
                    or more of which are and have been so registered, "Principal
                    Party" shall refer to whichever of such Persons is the
                    issuer of the Common Shares having the greatest aggregate
                    market value; and (3) if such Person is owned, directly or
                    indirectly, by a joint venture formed by two or more Persons
                    that are not owned, directly or indirectly, by the same
                    Person, the rules set forth in (1) and (2) above shall apply
                    to each of the chains of ownership having an interest in
                    such joint venture as if such party were a "subsidiary" of
                    both or all of such joint ventures and the Principal Parties
                    in each such chain shall bear the obligations set forth in
                    this Section 13 in the same ratio as their direct or
                    indirect interests in such Person bear to the total of such
                    interests.

             (c)    The Company shall not consummate any such consolidation,
                    merger, sale or transfer unless the Principal Party shall
                    have a sufficient number of authorized Common Shares that
                    have not been issued or reserved for issuance to permit the
                    exercise in full of the Rights in accordance with this
                    Section 13 and unless prior thereto the Company and each
                    Principal Party and each other Person who may become a
                    Principal Party as a result of such consolidation, merger,
                    sale or transfer shall have (i) executed and delivered to
                    the Rights Agent a supplemental agreement providing for the
                    terms set forth in paragraphs (a) and (b) of this Section 13
                    and (ii) prepared, filed and had declared and remain
                    effective a registration statement under the Act on the
                    appropriate form with respect to the Rights and the
                    securities exercisable upon exercise of the Rights and
                    further providing that, as soon as practicable after the
                    date of any consolidation, merger, sale or transfer of
                    assets mentioned in paragraph (a) of this Section 13, the
                    Principal Party at its own expense will:

                    (i)    cause the registration statement under the Act with
                           respect to the Rights and the securities purchasable
                           upon exercise of the Rights on an appropriate form
                           to remain effective (with a prospectus at all times
                           meeting the requirements of the Act) until the Final
                           Expiration Date;

                    (ii)   use its best efforts to qualify or register the
                           Rights and the securities purchasable upon exercise
                           of the Rights under the blue sky laws of such
                           jurisdictions as may be necessary or appropriate;


                                         23.
<PAGE>

                    (iii)  list the Rights and the securities purchasable upon
                           exercise of the Rights on each national securities
                           exchange on which the Common Shares were listed
                           prior to the consummation of such consolidation,
                           merger, sale or transfer, or on the Nasdaq National
                           Market if the Common Shares were listed on the
                           Nasdaq National Market or, if the Common Shares were
                           not listed on a national securities exchange or the
                           Nasdaq National Market prior to the consummation of
                           such consolidation, merger, sale or transfer, on a
                           national securities exchange or the Nasdaq National
                           Market; and

                    (iv)   deliver to holders of the Rights historical
                           financial statements for the Principal Party and
                           each of its Affiliates which comply in all material
                           respects with the requirements for registration on
                           Form 10 under the Exchange Act.

             The provisions of this Section 13 shall similarly apply to
             successive mergers or consolidations or sales or other transfers.

             (d)    After the Distribution Date, the Company covenants and
                    agrees that it shall not (i) consolidate with, (ii) merge
                    with or into, or (iii) sell or transfer to, in one or more
                    transactions, assets or earning power aggregating more than
                    50% of the assets or earning power of the Company and its
                    subsidiaries taken as a whole, any other Person (other than
                    a Subsidiary of the Company in a transaction which does not
                    violate Section 11(m) hereof), if (x) at the time of or
                    after such consolidation, merger or sale there are any
                    charter or bylaw provisions or any rights, warrants or other
                    instruments or securities outstanding, agreements in effect
                    or any other action taken which would diminish or otherwise
                    eliminate the benefits intended to be afforded by the Rights
                    or (y) prior to, simultaneously with or immediately after
                    such consolidation, merger or sale, the stockholders of the
                    Person who constitutes, or would constitute, the "Principal
                    Party" for purposes of Section 13(a) hereof shall have
                    received a distribution of Rights previously owned by such
                    Person or any of its Affiliates and Associates.  The Company
                    shall not consummate any such consolidation, merger, sale or
                    transfer unless prior thereto the Company and such other
                    Person shall have executed and delivered to the Rights Agent
                    a supplemental agreement evidencing compliance with this
                    Section 13(d).

SECTION 14.  FRACTIONAL RIGHTS AND FRACTIONAL SHARES.

             (a)    The Company shall not be required to issue fractions of
                    Rights or to distribute Rights Certificates which evidence
                    fractional Rights.  In lieu of such fractional Rights, there
                    shall be paid to the registered holders of the Rights
                    Certificates with regard to which such fractional Rights
                    would otherwise be issuable, an amount in cash equal to the
                    same fraction of the current market value of a whole Right.
                    For the purposes of this Section 14(a), the current market
                    value of a whole Right shall be the


                                         24.
<PAGE>

                    closing price of the Rights for the Trading Day immediately
                    prior to the date on which such fractional Rights would have
                    been otherwise issuable.  The closing price for any day
                    shall be the last sale price, regular way, or, in case no
                    such sale takes place on such day, the average of the
                    closing bid and asked prices, regular way, in either case as
                    reported in the principal consolidated transaction reporting
                    system with respect to securities listed or admitted to
                    trading on the New York Stock Exchange or, if the Rights are
                    not listed or admitted to trading on the New York Stock
                    Exchange, as reported in the principal consolidated
                    transaction reporting system with respect to securities
                    listed on the principal national securities exchange on
                    which the Rights are listed or admitted to trading or as
                    reported on the Nasdaq National Market or, if the Rights are
                    not listed or admitted to trading on any national securities
                    exchange or reported on the Nasdaq National Market, the last
                    quoted price or, if not so quoted, the average of the high
                    bid and low asked prices in the over-the-counter market, as
                    reported by Nasdaq or such other system then in use or, if
                    on any such date the Rights are not quoted by any such
                    organization, the average of the closing bid and asked
                    prices as furnished by a professional market maker making a
                    market in the Rights selected by the Board of Directors of
                    the Company.  If on any such date no such market maker is
                    making a market in the Rights, the fair value of the Rights
                    on such date as determined in good faith by the Board of
                    Directors of the Company shall be used.

             (b)    The Company shall not be required to issue fractions of
                    Common Shares upon exercise of the Rights or to distribute
                    certificates which evidence fractional Common Shares.  In
                    lieu of fractional Common Shares, the Company shall pay to
                    the registered holders of Rights Certificates at the time
                    such Rights are exercised as herein provided an amount in
                    cash equal to the same fraction of the current market value
                    of one Common Share.  For the purposes of this
                    Section 14(b), the current market value of a Common Share
                    shall be the current per share market price of the Common
                    Shares (as determined pursuant to the second sentence of
                    Section 11(d)(i) hereof) for the Trading Day immediately
                    prior to the date of such exercise (or, if not publicly
                    traded, in accordance with Section 11(d)(ii) hereof).

             (c)    Following the occurrence of one of the transactions or
                    events specified in Section 11 hereof giving rise to the
                    right to receive Common Shares, capital stock equivalents or
                    other securities upon the exercise of a Right, the Company
                    shall not be required to issue fractions of Common Shares or
                    units of such Common Shares, capital stock equivalents or
                    other securities upon exercise of the Rights or to
                    distribute certificates which evidence fractional Common
                    Shares, capital stock equivalents or other securities.  In
                    lieu of fractional Common Shares, capital stock equivalents
                    or other securities, the Company shall pay to the registered
                    holders of Rights Certificates at the time such Rights are
                    exercised as herein provided an amount in cash equal to the
                    same fraction of the current market value of one Common
                    Share or unit of such Common Shares, capital stock


                                         25.
<PAGE>

                    equivalents or other securities.  For purposes of this
                    Section 14(c), the current market value shall be the current
                    per share market price (as determined pursuant to Section
                    11(d)(i) hereof) for the Trading Day immediately prior to
                    the date of such exercise and, if such capital stock
                    equivalent is not traded, each such capital stock equivalent
                    shall have the value of one Common Share.

             (d)    The holder of a Right by the acceptance of the Right
                    expressly waives his right to receive any fractional Rights
                    or any fractional shares upon exercise of a Right (except as
                    provided above).

SECTION 15.  RIGHTS OF ACTION.  All rights of action in respect of this
             Agreement, excepting the rights of action given to the Rights
             Agent under Sections 18 and 20 hereof, are vested in the
             respective registered holders of the Rights Certificates (and,
             prior to the Distribution Date, the registered holders of the
             Common Shares) and any registered holder of any Rights Certificate
             (or, prior to the Distribution Date, of the Common Shares),
             without the consent of the Rights Agent or of the holder of any
             other Rights Certificate (or, prior to the Distribution Date, of
             the Common Shares), may, in his own behalf and for his own
             benefit, enforce, and may institute and maintain any suit, action
             or proceeding against the Company to enforce, or otherwise act in
             respect of, his right to exercise the Rights evidenced by such
             Rights Certificate in the manner provided in such Rights
             Certificate and in this Agreement.  Without limiting the foregoing
             or any remedies available to the holders of Rights, it is
             specifically acknowledged that the holders of Rights would not
             have an adequate remedy at law for any breach of this Agreement
             and will be entitled to specific performance of the obligations
             under, and injunctive relief against actual or threatened
             violations of the obligations of any Person subject to, this
             Agreement.  Holders of Rights shall be entitled to recover the
             reasonable costs and expenses, including attorneys fees, incurred
             by them in any action to enforce the provisions of this Agreement.

SECTION 16.  AGREEMENT OF RIGHTS HOLDERS.  Every holder of a Right, by
             accepting the same, consents and agrees with the Company and the
             Rights Agent and with every other holder of a Right that:

             (a)    prior to the Distribution Date, the Rights will be
                    transferable only in connection with the transfer of the
                    Common Shares;

             (b)    after the Distribution Date, the Rights Certificates are
                    transferable (subject to the provisions of this Agreement)
                    only on the registry books of the Rights Agent if
                    surrendered at the principal office of the Rights Agent,
                    duly endorsed or accompanied by a proper instrument of
                    transfer; and

             (c)    the Company and the Rights Agent may deem and treat the
                    person in whose name the Rights Certificate (or, prior to
                    the Distribution Date, the associated Common Shares
                    certificate) is registered as the absolute owner thereof and
                    of the Rights evidenced thereby (notwithstanding any


                                         26.
<PAGE>

                    notations of ownership or writing on the Rights Certificates
                    or the associated Common Shares certificate made by anyone
                    other than the Company or the Rights Agent) for all purposes
                    whatsoever, and neither the Company nor the Rights Agent
                    shall be affected by any notice to the contrary.

SECTION 17.  RIGHTS CERTIFICATE HOLDER NOT DEEMED A STOCKHOLDER.  No holder, as
             such, of any Rights Certificate shall be entitled to vote, receive
             dividends or be deemed for any purpose the holder of the Common
             Shares or any other securities of the Company which may at any
             time be issuable on the exercise of the Rights represented
             thereby, nor shall anything contained herein or in any Rights
             Certificate be construed to confer upon the holder of any Rights
             Certificate, as such, any of the rights of a stockholder of the
             Company or any right to vote for the election of directors or upon
             any matter submitted to stockholders at any meeting thereof, or to
             give or withhold consent to any corporate action, or to receive
             notice of meetings or other actions affecting stockholders (except
             as provided in Section 25 hereof), or to receive dividends or
             subscription rights, or otherwise, until the Rights evidenced by
             such Rights Certificate or Rights Certificates shall have been
             exercised in accordance with the provisions hereof.

SECTION 18.  CONCERNING THE RIGHTS AGENT.  The Company agrees to pay to the
             Rights Agent reasonable compensation for all services rendered by
             it hereunder and, from time to time, on demand of the Rights
             Agent, its reasonable expenses and counsel fees and other
             disbursements incurred in the administration and execution of this
             Agreement and the exercise and performance of its duties
             hereunder.  The Company also agrees to indemnify the Rights Agent
             for, and to hold it harmless against, any loss, liability, or
             expense, incurred without gross negligence, bad faith or willful
             misconduct on the part of the Rights Agent, for anything done or
             omitted by the Rights Agent in connection with the acceptance and
             administration of this Agreement, including the costs and expenses
             of defending against any claim of liability in the premises.  The
             indemnity provided herein shall survive the expiration of the
             Rights and the termination of this Agreement.

             The Rights Agent shall be protected and shall incur no liability
             for, or in respect of any action taken, suffered or omitted by it
             in connection with, its administration of this Agreement in
             reliance upon any Rights Certificate or certificate for the Common
             Shares or for other securities of the Company, instrument of
             assignment or transfer, power of attorney, endorsement, affidavit,
             letter, notice, direction, consent, certificate, statement, or
             other paper or document believed by it to be genuine and to be
             signed, executed and, where necessary, verified or acknowledged,
             by the proper person or persons, or otherwise upon the advice of
             counsel as set forth in Section 20 hereof.  In no case will the
             Rights Agent be liable for special, indirect, incidental or
             consequential or consequential loss or damage at any kind
             whatsoever (including but not limited to lost profits), even if
             the Rights Agent has been advised of such loss or damage.


                                         27.
<PAGE>

SECTION 19.  MERGER OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS AGENT.  Any
             corporation into which the Rights Agent or any successor Rights
             Agent may be merged or with which it may be consolidated, or any
             corporation resulting from any merger or consolidation to which
             the Rights Agent or any successor Rights Agent shall be a party,
             or any corporation succeeding to the shareholder services or
             corporate trust business of the Rights Agent or any successor
             Rights Agent, shall be the successor to the Rights Agent under
             this Agreement without the execution or filing of any paper or any
             further act on the part of any of the parties hereto, provided
             that such corporation would be eligible for appointment as a
             successor Rights Agent under the provisions of Section 21 hereof.
             In case at the time such successor Rights Agent shall succeed to
             the agency created by this Agreement any of the Rights
             Certificates shall have been countersigned but not delivered, any
             such successor Rights Agent may adopt the countersignature of the
             predecessor Rights Agent and deliver such Rights Certificates so
             countersigned; and in case at that time any of the Rights
             Certificates shall not have been countersigned, any successor
             Rights Agent may countersign such Right Certificates either in the
             name of the predecessor Rights Agent or in the name of the
             successor Rights Agent; and in all such cases such Rights
             Certificates shall have the full force provided in the Rights
             Certificates and in this Agreement.

             In case at any time the name of the Rights Agent shall be changed
             and at such time any of the Rights Certificates shall have been
             countersigned but not delivered, the Rights Agent may adopt the
             countersignature under its prior name and deliver Rights
             Certificates so countersigned; and in case at that time any of the
             Rights Certificates shall not have been countersigned, the Rights
             Agent may countersign such Rights Certificates either in its prior
             name or in its changed name; and in all such cases such Rights
             Certificates shall have the full force provided in the Rights
             Certificates and in this Agreement.

SECTION 20.  DUTIES OF RIGHTS AGENT.  The Rights Agent undertakes the duties
             and obligations imposed by this Agreement upon the following terms
             and conditions, by all of which the Company and the holders of
             Rights Certificates, by their acceptance thereof, shall be bound:

             (a)    The Rights Agent may consult with legal counsel of its
                    choice (who may be legal counsel for the Company), and the
                    opinion of such counsel shall be full and complete
                    authorization and protection to the Rights Agent as to any
                    action taken or omitted by it in good faith and in
                    accordance with such opinion.

             (b)    Whenever in the performance of its duties under this
                    Agreement the Rights Agent shall deem it necessary or
                    desirable that any fact or matter be proved or established
                    by the Company prior to taking or suffering any action
                    hereunder, such fact or matter (unless other evidence in
                    respect thereof be herein specifically prescribed) may be
                    deemed to be conclusively proved and established by a
                    certificate signed by any one of the Chairman of the Board,
                    the Chief Executive Officer, the President, the


                                         28.
<PAGE>

                    Chief Financial Officer, any Vice President, the Treasurer
                    or the Secretary of the Company and delivered to the Rights
                    Agent; and such certificate shall be full authorization to
                    the Rights Agent for any action taken or suffered in good
                    faith by it under the provisions of this Agreement in
                    reliance upon such certificate.

             (c)    The Rights Agent shall be liable hereunder to the Company
                    and any other Person only for its own gross negligence, bad
                    faith or willful misconduct.

             (d)    The Rights Agent shall not be liable for or by reason of any
                    of the statements of fact or recitals contained in this
                    Agreement or in the Rights Certificates (except its
                    countersignature thereof) or be required to verify the same,
                    but all such statements and recitals are and shall be deemed
                    to have been made by the Company only.

             (e)    The Rights Agent shall not be under any responsibility in
                    respect of the validity of this Agreement or the execution
                    and delivery hereof (except the due execution hereof by the
                    Rights Agent) or in respect of the validity or execution of
                    any Rights Certificate (except its countersignature
                    thereof); nor shall it be responsible for any breach by the
                    Company of any covenant or condition contained in this
                    Agreement or in any Rights Certificate; nor shall it be
                    responsible for any change in the exercisability of the
                    Rights (including the Rights becoming void pursuant to
                    Section 11(a)(ii) hereof) or any adjustment in the terms of
                    the Rights (including the manner, method or amount thereof)
                    provided for in Sections 3, 11, 13, 23 or 24 hereof, or the
                    ascertaining of the existence of facts that would require
                    any such change or adjustment (except with respect to the
                    exercise of Rights evidenced by Rights Certificates after
                    receipt of a certificate pursuant to Section 12 hereof
                    describing such change or adjustment); nor shall it by any
                    act hereunder be deemed to make any representation or
                    warranty as to the authorization or reservation of any
                    Common Shares to be issued pursuant to this Agreement or any
                    Rights Certificate or as to whether any Common Shares will,
                    when issued, be validly authorized and issued, fully paid
                    and nonassessable.

             (f)    The Company agrees that it will perform, execute,
                    acknowledge and deliver or cause to be performed, executed,
                    acknowledged and delivered all such further and other acts,
                    instruments and assurances as may reasonably be required by
                    the Rights Agent for the carrying out or performing by the
                    Rights Agent of the provisions of this Agreement.

             (g)    The Rights Agent is hereby authorized and directed to accept
                    instructions with respect to the performance of its duties
                    hereunder from any one of the Chairman of the Board, the
                    Chief Executive Officer, the President, the Chief Financial
                    Officer, any Vice President, the Secretary or the Treasurer
                    of the Company, and to apply to such officers for advice or
                    instructions in connection with its duties, and it shall not
                    be liable for any action taken or


                                         29.
<PAGE>

                    suffered by it in good faith in accordance with instructions
                    of any such officer or for any delay in acting while waiting
                    for those instructions.  Any application by the Rights Agent
                    for written instructions from the Company may, at the option
                    of the Rights Agent, set forth in writing any action
                    proposed to be taken or omitted by the Rights Agent with
                    respect to its duties or obligations under this Agreement
                    and the date on and/or after which such action shall be
                    taken or omitted and the Rights Agent shall not be liable
                    for any action taken or omitted in accordance with a
                    proposal included in any such application on or after the
                    date specified therein (which date shall not be less than
                    three business days after the date indicated in such
                    application unless any such officer shall have consented in
                    writing to an earlier date) unless, prior to taking or
                    omitting any such action, the Rights Agent has received
                    written instructions in response to such application
                    specifying the action to be taken or omitted.

             (h)    The Rights Agent and any stockholder, director, officer or
                    employee of the Rights Agent may buy, sell or deal in any of
                    the Rights or other securities of the Company or become
                    pecuniarily interested in any transaction in which the
                    Company may be interested, or contract with or lend money to
                    the Company or otherwise act as fully and freely as though
                    it were not Rights Agent under this Agreement.  Nothing
                    herein shall preclude the Rights Agent from acting in any
                    other capacity for the Company or for any other legal
                    entity.

             (i)    The Rights Agent may execute and exercise any of the rights
                    or powers hereby vested in it or perform any duty hereunder
                    either itself or by or through its attorneys or agents, and
                    the Rights Agent shall not be answerable or accountable for
                    any act, default, neglect or misconduct of any such
                    attorneys or agents or for any loss to the Company resulting
                    from any such act, default, neglect or misconduct, provided
                    reasonable care was exercised in the selection and continued
                    employment thereof.

             (j)    No provision of this Agreement shall require the Rights
                    Agent to expend or risk its own funds or otherwise incur any
                    financial liability in the performance of any of its duties
                    hereunder or in the exercise of its rights if there shall be
                    reasonable grounds for believing that repayment of such
                    funds or adequate indemnification against such risk or
                    liability is not reasonably assured to it.

             (k)    If, with respect to any Rights Certificate surrendered to
                    the Rights Agent for exercise or transfer, the certificate
                    attached to the form of assignment or form of election to
                    purchase, as the case may be, has not been executed, the
                    Rights Agent shall not take any further action with respect
                    to such requested exercise of transfer without first
                    consulting with the Company.

SECTION 21.  CHANGE OF RIGHTS AGENT.  The Rights Agent or any successor Rights
             Agent may resign and be discharged from its duties under this
             Agreement upon 30 days'


                                         30.
<PAGE>

             notice in writing mailed to the Company and to each transfer agent
             for the Common Shares by registered or certified mail, and to the
             holders of the Rights Certificates by first-class mail.  The
             Company may remove the Rights Agent or any successor Rights Agent
             upon 30 days' notice in writing, mailed to the Rights Agent or
             successor Rights Agent, as the case may be, and to each transfer
             agent for the Common Shares by registered or certified mail, and
             to the holders of the Rights Certificates by first-class mail.  If
             the Rights Agent shall resign or be removed or shall otherwise
             become incapable of acting, the Company shall appoint a successor
             to the Rights Agent.  If the Company shall fail to make such
             appointment within a period of 30 days after giving notice of such
             removal or after it has been notified in writing of such
             resignation or incapacity by the resigning or incapacitated Rights
             Agent or by the holder of a Rights Certificate (who shall, with
             such notice, submit his Rights Certificate for inspection by the
             Company), then the registered holder of any Rights Certificate may
             apply to any court of competent jurisdiction for the appointment
             of a new Rights Agent.  Any successor Rights Agent, whether
             appointed by the Company or by such a court, shall be either (a) a
             corporation business trust or limited liability company organized
             and doing business under the laws of the United States or of any
             other state of the United States which is authorized under such
             laws to exercise corporate trust or stock transfer powers and is
             subject to supervision or examination by federal or state
             authority and which has at the time of its appointment as Rights
             Agent a combined capital and surplus of at least $50 million or
             (b) a direct or indirect wholly owned subsidiary of such an entity
             or its wholly-owning parent.  After appointment, the successor
             Rights Agent shall be vested with the same powers, rights, duties
             and responsibilities as if it had been originally named as Rights
             Agent without further act or deed; but the predecessor Rights
             Agent shall deliver and transfer to the successor Rights Agent any
             property at the time held by it hereunder, and execute and deliver
             any further assurance, conveyance, act or deed necessary for the
             purpose.  Not later than the effective date of any such
             appointment the Company shall file notice thereof in writing with
             the predecessor Rights Agent and each transfer agent for the
             Common Shares, and mail a notice thereof in writing to the
             registered holders of the Rights Certificates.  Failure to give
             any notice provided for in this Section 21, however, or any defect
             therein, shall not affect the legality or validity of the
             resignation or removal of the Rights Agent or the appointment of
             the successor Rights Agent, as the case may be.

SECTION 22.  ISSUANCE OF NEW RIGHTS CERTIFICATES.  Notwithstanding any of the
             provisions of this Agreement or of the Rights to the contrary, the
             Company may, at its option, issue new Rights Certificates
             evidencing Rights in such form as may be approved by its Board of
             Directors to reflect any adjustment or change in the Purchase
             Price and the number or kind or class of shares or other
             securities or property purchasable under the Rights Certificates
             made in accordance with the provisions of this Agreement.  In
             addition, in connection with the issuance or sale of Common Shares
             following the Distribution Date and prior to the earlier of the
             Redemption Date and the Final Expiration Date, the Company (a)
             shall with respect to Common Shares so issued or sold pursuant to
             the exercise of stock


                                         31.
<PAGE>

             options or under any employee plan or arrangement in existence
             prior to the Distribution Date, or upon the exercise, conversion
             or exchange of securities, notes or debentures issued by the
             Company and in existence prior to the Distribution Date, and (b)
             may, in any other case, if deemed necessary or appropriate by the
             Board of Directors of the Company, issue Rights Certificates
             representing the appropriate number of Rights in connection with
             such issuance or sale; PROVIDED, HOWEVER, that (i) the Company
             shall not be obligated to issue any such Rights Certificates if,
             and to the extent that, the Company shall be advised by counsel
             that such issuance would create a significant risk of material
             adverse tax consequences to the Company or the Person to whom such
             Rights Certificate would be issued, and (ii) no Rights Certificate
             shall be issued if, and to the extent that, appropriate adjustment
             shall otherwise have been made in lieu of the issuance thereof.

SECTION 23.  REDEMPTION.

             (a)    The Rights may be redeemed by action of the Board of
                    Directors pursuant to Section 23(b) hereof and shall not be
                    redeemed in any other manner.

             (b)

                    (i)    The Board of Directors of the Company may, at its
                           option, at any time prior to the earlier of such
                           time as any Person becoming an Acquiring Person
                           or the Final Expiration Date, redeem all but not
                           less than all of the then outstanding Rights at a
                           redemption price of $.01 per Right, appropriately
                           adjusted to reflect any stock split, stock dividend
                           or similar transaction occurring after the date
                           hereof (such redemption price being hereinafter
                           referred to as the "Redemption Price"), and the
                           Company may, at its option, pay the Redemption Price
                           in Common Shares (based on the "current per-share
                           market price," as such term is defined in
                           Section 11(d) hereof, of the Common Shares at the
                           time of redemption), cash or any other form of
                           consideration deemed appropriate by the Board of
                           Directors.  The redemption of the Rights by the
                           Board of Directors may be made effective at such
                           time, on such basis and subject to such conditions
                           as the Board of Directors in its sole discretion may
                           establish.  Notwithstanding anything contained in
                           this Agreement to the contrary, the Rights shall not
                           be exercisable pursuant to Section 11(a)(ii) hereof
                           prior to the expiration or termination of the
                           Company's right of redemption under this Section
                           23(b)(i).

                    (ii)   In addition, the Board of Directors of the Company
                           may, at its option, at any time after the time a
                           Person becomes an Acquiring Person and the
                           expiration of any period during which the holder of
                           Rights may exercise the rights under Section
                           11(a)(ii) hereof but prior to any event described in
                           clause (x), (y) or (z) of the first


                                         32.
<PAGE>

                           sentence of Section 13 hereof, redeem all but not
                           less than all of the then outstanding Rights at the
                           Redemption Price (x) in connection with any merger,
                           consolidation or sale or other transfer (in one
                           transaction or in a series of related transactions)
                           of assets or earning power aggregating 50% or more
                           of the assets or earning power of the Company and
                           its subsidiaries (taken as a whole) in which all
                           holders of Common Shares are treated alike and not
                           involving (other than as a holder of Common Shares
                           being treated like all other such holders) an
                           Interested Stockholder or a Transaction Person or
                           (y)(A) if and for so long as the Acquiring Person is
                           not thereafter the Beneficial Owner of 20% or more
                           of the then outstanding Common Shares, and (B) at
                           the time of redemption no other Persons are
                           Acquiring Persons.

             (c)    Immediately upon the action of the Board of Directors of the
                    Company ordering the redemption of the Rights pursuant to
                    Section 23(b) hereof, and without any further action and
                    without any notice, the right to exercise the Rights will
                    terminate and the only right thereafter of the holders of
                    Rights shall be to receive the Redemption Price.  The
                    Company shall promptly give public notice of any such
                    redemption; PROVIDED, HOWEVER, that the failure to give, or
                    any defect in, any such notice shall not affect the validity
                    of such redemption.  Within 10 days after such action of the
                    Board of Directors ordering the redemption of the Rights
                    pursuant to Section 23(b) hereof, the Company shall mail a
                    notice of redemption to all the holders of the then
                    outstanding Rights at their last addresses as they appear
                    upon the registry books of the Rights Agent or, prior to the
                    Distribution Date, on the registry books of the transfer
                    agent for the Common Shares, PROVIDED, HOWEVER, that failure
                    to give, or any defect in, any such notice shall not affect
                    the validity of such redemption.  Any notice which is mailed
                    in the manner herein provided shall be deemed given, whether
                    or not the holder receives the notice.  Each such notice of
                    redemption will state the method by which the payment of the
                    Redemption Price will be made.  Neither the Company nor any
                    of its Affiliates or Associates may redeem, acquire or
                    purchase for value any Rights at any time in any manner
                    other than that specifically set forth in this Section 23 or
                    in Section 24 hereof, and other than in connection with the
                    purchase of Common Shares prior to the Distribution Date.

             (d)    The Company may, at its option, discharge all of its
                    obligations with respect to any redemption of the Rights by
                    (i) issuing a press release announcing the manner of
                    redemption of the Rights and (ii) mailing payment of the
                    Redemption Price to the registered holders of the Rights at
                    their last addresses as they appear on the registry books of
                    the Rights Agent or, prior to the Distribution Date, on the
                    registry books of the transfer agent for the Common Shares,
                    and upon such action, all outstanding Rights Certificates
                    shall be null and void without any further action by the
                    Company.


                                         33.
<PAGE>

SECTION 24.  EXCHANGE.

             (a)    The Board of Directors of the Company may, at its option, at
                    any time after any Person becomes an Acquiring Person,
                    exchange all or part of the then outstanding and exercisable
                    Rights (which shall not include Rights that have become void
                    pursuant to the provisions of Section 11(a)(ii) hereof) for
                    Common Shares at an exchange ratio of one Common Share per
                    Right, appropriately adjusted to reflect any stock split,
                    stock dividend or similar transaction occurring after the
                    date hereof (such exchange ratio being hereinafter referred
                    to as the "Exchange Ratio").  Notwithstanding the foregoing,
                    the Board of Directors shall not be empowered to effect such
                    exchange at any time after any Person (other than the
                    Company, any Subsidiary of the Company, any employee benefit
                    plan of the Company or any such Subsidiary, or any entity
                    holding Common Shares for or pursuant to the terms of any
                    such plan), together with all Affiliates and Associates of
                    such Person, becomes the Beneficial Owner of 50% or more of
                    the Common Shares then outstanding.

             (b)    Immediately upon the action of the Board of Directors of the
                    Company ordering the exchange of any Rights pursuant to
                    Section 24(a) hereof and without any further action and
                    without any notice, the right to exercise such Rights shall
                    terminate and the only right thereafter of a holder of such
                    Rights shall be to receive that number of Common Shares
                    equal to the number of such Rights held by such holder
                    multiplied by the Exchange Ratio.  The Company shall
                    promptly give public notice of any such exchange; PROVIDED,
                    HOWEVER, that the failure to give, or any defect in, such
                    notice shall not affect the validity of such exchange.  The
                    Company promptly shall mail a notice of any such exchange to
                    all of the holders of such Rights at their last addresses as
                    they appear upon the registry books of the Rights Agent;
                    PROVIDED, HOWEVER, that the failure to give, or any defect
                    in, such notice shall not affect the validity of such
                    exchange.  Any notice which is mailed in the manner herein
                    provided shall be deemed given, whether or not the holder
                    receives the notice.  Each such notice of exchange will
                    state the method by which the exchange of the Common Shares
                    for Rights will be effected and, in the event of any partial
                    exchange, the number of Rights which will be exchanged.  Any
                    partial exchange shall be effected pro rata based on the
                    number of Rights (other than Rights which have become void
                    pursuant to the provisions of Section 11(a)(ii) hereof) held
                    by each holder of Rights.

             (c)    In lieu of issuing Common Shares in accordance with Section
                    24(a) hereof, the Company may, if a majority of the Board of
                    Directors then in office determines that such action is
                    necessary or appropriate and not contrary to the interests
                    of the holders of Rights, elect to (and, in the event that
                    there are not sufficient treasury shares and authorized but
                    unissued Common Shares to permit any exchange of the Rights
                    in accordance with Section 24(a) hereof, the Company shall)
                    take all such action as may be


                                         34.
<PAGE>

                    necessary to authorize, issue or pay, upon the exchange of
                    the Rights, cash (including by way of a reduction of the
                    Purchase Price), property, preferred stock of the Company,
                    other securities or any combination thereof having an
                    aggregate value equal to the value of the Common Shares
                    which otherwise would have been issuable pursuant to Section
                    24(a) hereof, which aggregate value shall be determined by a
                    nationally recognized investment banking firm selected by a
                    majority of the Board of Directors then in office.  For
                    purposes of the preceding sentence, the value of the Common
                    Shares shall be determined pursuant to Section 11(d) hereof.
                    Any election pursuant to this Section 24(c) by the Board of
                    Directors must be made within 60 days following the date on
                    which the event described in Section 11(a)(ii) hereof shall
                    have occurred.  Following the occurrence on the event
                    described in Section 11(a)(ii) hereof, a majority of the
                    Board of Directors then in office may suspend the
                    exercisability of the Rights for a period of up to 60 days
                    following the date on which the event described in Section
                    11(a)(ii) hereof shall have occurred to the extent that such
                    directors have not determined whether to exercise their
                    rights of election under this Section 24(c).  In the event
                    of any such suspension, the Company shall issue a public
                    announcement stating that the exercisability of the Rights
                    has been temporarily suspended.

             (d)    The Company shall not be required to issue fractions of
                    Common Shares or to distribute certificates which evidence
                    fractional Common Shares.  In lieu of such fractional Common
                    Shares, the Company shall pay to the registered holders of
                    the Rights Certificates with regard to which such fractional
                    Common Shares would otherwise be issuable an amount in cash
                    equal to the same fraction of the current market value of a
                    whole Common Share.  For the purposes of this Section 24(d),
                    the current market value of a whole Common Share shall be
                    the closing price of a Common Share (as determined pursuant
                    to the second sentence of Section 11(d)(i) hereof) for the
                    Trading Day immediately after the date of the first public
                    announcement by the Company that an exchange is to be
                    effected pursuant to this Section 24.

             (e)    The Company shall not be required to issue fractions of
                    Common Shares upon exchange of the Rights or to distribute
                    certificates which evidence fractional Common Shares.  In
                    lieu of fractional Common Shares, the Company shall pay to
                    the registered holders of Rights Certificates at the time
                    such Rights are exercised as herein provided an amount in
                    cash equal to the same fraction of the current market value
                    of one Common Share.  For the purposes of this
                    Section 24(e), the current market value of a Common Share
                    shall be the closing price of a Common Share (as determined
                    pursuant to the second sentence of Section 11(d)(i) hereof)
                    for the Trading Day immediately after the date of the first
                    public announcement by the Company that an exchange is to be
                    effected pursuant to this Section 24.


                                         35.
<PAGE>

SECTION 25.  NOTICE OF CERTAIN EVENTS.

             (a)    In case the Company shall propose (i) to pay any dividend
                    payable in stock of any class to the holders of its Common
                    Shares or to make any other distribution to the holders of
                    its Common Shares (other than a regular quarterly cash
                    dividend), (ii) to offer to the holders of its Common Shares
                    rights or warrants to subscribe for or to purchase any
                    additional Common Shares or shares of stock of any class or
                    any other securities, rights or options, (iii) to effect any
                    reclassification of its Common Shares (other than a
                    reclassification involving only the subdivision of
                    outstanding Common Shares), (iv) to effect any consolidation
                    or merger into or with, or to effect any sale or other
                    transfer (or to permit one or more of its Subsidiaries to
                    effect any sale or other transfer), in one or more
                    transactions, of 50% or more of the assets or earning power
                    of the Company and its Subsidiaries (taken as a whole), to
                    any other Person, (v) to effect the liquidation, dissolution
                    or winding up of the Company, or (vi) to declare or pay any
                    dividend on the Common Shares payable in Common Shares or to
                    effect a subdivision, combination or consolidation of the
                    Common Shares (by reclassification or otherwise than by
                    payment of dividends in Common Shares), then, in each such
                    case, the Company shall give to each holder of a Rights
                    Certificate, in accordance with Section 26 hereof, a notice
                    of such proposed action, which shall specify the record date
                    for the purpose of such stock dividend, or distribution of
                    rights or warrants, or the date on which such
                    reclassification, consolidation, merger, sale, transfer,
                    liquidation, dissolution, or winding up is to take place and
                    the date of participation therein by the holders of the
                    Common Shares, if any such date is to be fixed, and such
                    notice shall be so given in the case of any action covered
                    by clause (i) or (ii) above at least 10 days prior to the
                    record date for determining holders of the Common Shares for
                    purposes of such action, and in the case of any such other
                    action, at least 10 days prior to the date of the taking of
                    such proposed action or the date of participation therein by
                    the holders of the Common Shares, whichever shall be the
                    earlier.

             (b)    In case the event set forth in Section 11(a)(ii) hereof
                    shall occur, then the Company shall as soon as practicable
                    thereafter give to each holder of a Rights Certificate, in
                    accordance with Section 26 hereof, a notice of the
                    occurrence of such event, which notice shall describe the
                    event and the consequences of the event to holders of Rights
                    under Section 11(a)(ii) hereof.

SECTION 26.  NOTICES.  Notices or demands authorized by this Agreement to be
             given or made by the Rights Agent or by the holder of any Rights
             Certificate to or on the Company shall be sufficiently given or
             made if sent by first-class mail, postage prepaid, addressed
             (until another address is filed in writing with the Rights Agent)
             as follows:


                                         36.
<PAGE>

                           Adaptive Broadband Corporation
                           1143 Borregas Ave.
                           Sunnyvale, CA  94089


             Subject to the provisions of Section 21 hereof, any notice or
             demand authorized by this Agreement to be given or made by the
             Company or by the holder of any Rights Certificate to or on the
             Rights Agent shall be sufficiently given or made if sent by
             first-class mail, postage prepaid, addressed (until another
             address is filed in writing with the Company) as follows:

                           BankBoston, N.A.
                           c/o EquiServe Limited Partnership
                           150 Royall Street
                           Canton, MA  02021
                           Attn: Client Administration

             Notices or demands authorized by this Agreement to be given or
             made by the Company or the Rights Agent to the holder of any
             Rights Certificate shall be sufficiently given or made if sent by
             first-class mail, postage prepaid, addressed to such holder at the
             address of such holder as shown on the registry books of the
             Company.

SECTION 27.  SUPPLEMENTS AND AMENDMENTS.  Prior to the Distribution Date, the
             Company and the Rights Agent shall, if the Company so directs,
             supplement or amend any provision of this Agreement without the
             approval of any holders of the Rights.  From and after the
             Distribution Date, the Company and the Rights Agent shall, if the
             Company so directs, from time to time supplement or amend any
             provision of this Agreement without the approval of any holders of
             Rights Certificates in order to (i) cure any ambiguity, (ii)
             correct or supplement any provision contained herein which may be
             defective or inconsistent with any other provisions herein, or
             (iii) change any other provisions with respect to the Rights which
             the Company may deem necessary or desirable; PROVIDED, HOWEVER,
             that no such supplement or amendment shall be made which would
             adversely affect the interests of the holders of Rights (other
             than the interests of an Acquiring Person or its Affiliates or
             Associates).  Any supplement or amendment adopted during any
             period after any Person has become an Acquiring Person but prior
             to the Distribution Date shall become null and void unless such
             supplement or amendment could have been adopted by the Company
             from and after the Distribution Date.  Any such supplement or
             amendment shall be evidenced by a writing signed by the Company
             and the Rights Agent.  Upon delivery of a certificate from an
             appropriate officer of the Company which states that the proposed
             supplement or amendment is in compliance with the terms of this
             Section 27, the Rights Agent shall execute such supplement or
             amendment unless the Rights Agent shall have determined in good
             faith that such supplement or amendment would adversely affect its
             interest under this Agreement.  Prior to the Distribution Date,
             the


                                         37.
<PAGE>

             interests of the holders of Rights shall be deemed coincident with
             the interests of the holders of Common Shares.

SECTION 28.  DETERMINATION AND ACTIONS BY THE BOARD OF DIRECTORS, ETC.  For all
             purposes of this Agreement, any calculation of the number of
             Common Shares outstanding at any particular time, including for
             purposes of determining the particular percentage of such
             outstanding Common Shares or any other securities of which any
             Person is the Beneficial Owner, shall be made in accordance with
             the last sentence of Rule 13d-3(d)(1)(i) of the General Rules and
             Regulations under the Exchange Act as in effect on the date of
             this Agreement.  The Board of Directors of the Company shall have
             the exclusive power and authority to administer this Agreement and
             to exercise all rights and powers specifically granted to the
             Board, or the Company, or as may be necessary or advisable in the
             administration of this Agreement, including without limitation,
             the right and power to (i) interpret the provisions of this
             Agreement, and (ii) make all determinations deemed necessary or
             advisable for the administration of this Agreement (including a
             determination to redeem or not redeem the Rights or to amend the
             Agreement).  All such actions, calculations, interpretations and
             determinations (including, for purposes of clause (y) below, all
             omissions with respect to the foregoing) which are done or made by
             the Board in good faith, shall (x) be final, conclusive and
             binding on the Rights Agent and the holders of the Rights, and (y)
             not subject the Board to any liability to the holders of the
             Rights.

SECTION 29.  SUCCESSORS.  All the covenants and provisions of this Agreement by
             or for the benefit of the Company or the Rights Agent shall bind
             and inure to the benefit of their respective successors and
             assigns hereunder.

SECTION 30.  BENEFITS OF THIS AGREEMENT.  Nothing in this Agreement shall be
             construed to give to any person or corporation other than the
             Company, the Rights Agent and the registered holders of the Rights
             Certificates (and, prior to the Distribution Date, the Common
             Shares) any legal or equitable right, remedy or claim under this
             Agreement; but this Agreement shall be for the sole and exclusive
             benefit of the Company, the Rights Agent and the registered
             holders of the Rights Certificates (and, prior to the Distribution
             Date, the Common Shares).

SECTION 31.  SEVERABILITY.  If any term, provision, covenant or restriction of
             this Agreement is held by a court of competent jurisdiction or
             other authority to be invalid, void or unenforceable, the
             remainder of the terms, provisions, covenants and restrictions of
             this Agreement shall remain in full force and effect and shall in
             no way be affected, impaired or invalidated.

SECTION 32.  GOVERNING LAW.  This Agreement and each Rights Certificate issued
             hereunder shall be deemed to be a contract made under the laws of
             the State of Delaware and for all purposes shall be governed by
             and construed in accordance with the laws of such State applicable
             to contracts to be made and performed entirely within such State.


                                         38.
<PAGE>

SECTION 33.  COUNTERPARTS.  This Agreement may be executed in any number of
             counterparts and each of such counterparts shall for all purposes
             be deemed to be an original, and all such counterparts shall
             together constitute but one and the same instrument.

SECTION 34.  DESCRIPTIVE HEADINGS.  Descriptive headings of the several
             Sections of this Agreement are inserted for convenience only and
             shall not control or affect the meaning or construction of any of
             the provisions hereof.









                                         39.
<PAGE>

     IN WITNESS WHEREOF, parties whereto have caused this Agreement to be duly
executed, all as of the day and year first above written.


                                   ADAPTIVE BROADBAND CORPORATION


                                         /s/  Donna S. Birks
                                   -----------------------------------------

                                   DONNA S. BIRKS
                                   Executive Vice President
                                   and Chief Financial Officer

                                   ATTEST:


                                         /s/  Kenneth J. Wees
                                   -----------------------------------------
                                   KENNETH J. WEES
                                   Secretary



                                   BANKBOSTON, N.A.


                                   By:       /s/  Britta Puschendorf
                                      --------------------------------------

                                   Title:       Senior Account Manager
                                         -----------------------------------

Exhibit A -    Form of Rights Certificate

Exhibit B -    Summary of Rights to Purchase Common Shares





                                         40.
<PAGE>

                                      EXHIBIT A

                              FORM OF RIGHTS CERTIFICATE

Certificate No. R-                                                  _____ Rights

     NOT EXERCISABLE AFTER JUNE 30, 2002 OR EARLIER IF NOTICE OF REDEMPTION IS
     GIVEN OR IF EXCHANGE OCCURS.  THE RIGHTS ARE SUBJECT TO REDEMPTION AT $.01
     PER RIGHT AND TO EXCHANGE ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.

                                  RIGHTS CERTIFICATE

                            ADAPTIVE BROADBAND CORPORATION

     This certifies that ________________________, or registered assigns, is the
registered owner of the number of Rights set forth above, each of which entitles
the owner thereof, subject to the terms, provisions and conditions of the Rights
Agreement, dated as of July 21, 1999 (the "Rights Agreement"), between Adaptive
Broadband Corporation, a Delaware corporation (the "Company"), and BankBoston,
N.A. (the "Rights Agent"), to purchase from the Company at any time after the
Distribution Date (as such term is defined in the Rights Agreement) and prior to
5:00 P.M., New York City time, on June 30, 2002 at the office of the Rights
Agent designated for such purpose, or at the office of its successor as Rights
Agent, one fully paid, non-assessable share of Common Stock, par value $.10 per
share (the "Common Shares"), of the Company, at a purchase price of $80.00 per
Common Share (the "Purchase Price"), upon presentation and surrender of this
Rights Certificate with the Form of Election to Purchase duly executed.  The
number of Rights evidenced by this Rights Certificate (and the number of Common
Shares which may be purchased upon exercise hereof) set forth above, and the
Purchase Price set forth above, are the number and Purchase Price as of July 26,
1999 based on the Common Shares as constituted at such date.

     From and after the time any Person becomes an Acquiring Person, (as such
terms are defined in the Rights Agreement), if the Rights evidenced by this
Rights Certificate are beneficially owned by (1) an Acquiring Person or an
Affiliate or Associate of any such Acquiring Person (as such terms are defined
in the Rights Agreement), (2) a transferee of any such Acquiring Person,
Associate or Affiliate who becomes a transferee after the Acquiring Person
becomes such or (3) under certain circumstances specified in the Rights
Agreement, a transferee of any such Acquiring Person, Associate or Affiliate who
becomes a transferee prior to or concurrently with the Acquiring Person becoming
such, such Rights shall become null and void without any further action and no
holder hereof shall have any right with respect to such Rights from and after
the time any Person becomes an Acquiring Person.


                                         A-1.
<PAGE>

     As provided in the Rights Agreement, the Purchase Price and the number of
Common Shares which may be purchased upon the exercise of the Rights evidenced
by this Rights Certificate are subject to modification and adjustment upon the
happening of certain events.

     This Rights Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, as amended from time to time, which terms,
provisions and conditions are hereby incorporated herein by reference and made a
part hereof and to which Rights Agreement reference is hereby made for a full
description of the rights, limitations of rights, obligations, duties and
immunities hereunder of the Rights Agent, the Company and the holders of the
Rights Certificates.  Copies of the Rights Agreement are on file at the
principal executive offices of the Company and the above-mentioned offices of
the Rights Agent.

     This Right Certificate, with or without other Rights Certificates, upon
surrender at the office of the Rights Agent designated for such purpose, may be
exchanged for another Rights Certificate or Rights Certificates of like tenor
and date evidencing Rights entitling the holder to purchase a like aggregate
number of Common Shares as the Rights evidenced by the Rights Certificate or
Rights Certificates surrendered shall have entitled such holder to purchase.  If
this Rights Certificate shall be exercised (other than pursuant to Section
11(a)(ii) of the Rights Agreement) in part, the holder shall be entitled to
receive upon surrender hereof another Rights Certificate or Rights Certificates
for the number of whole Rights not exercised.  If this Rights Certificate shall
be exercised in whole or in part pursuant to Section 11(a)(ii) of the Rights
Agreement, the holder shall be entitled to receive this Rights Certificate duly
marked to indicate that such exercise has occurred as set forth in the Rights
Agreement.

     Subject to the provisions of the Rights Agreement, the Rights evidenced by
this Rights Certificate (1) may be redeemed by the Company at a redemption price
of $.01 per Right or (2) may be exchanged in whole or in part for Common Shares.

     No fractional Common Shares will be issued upon the exercise of any Right
or Rights evidenced hereby, but in lieu thereof a cash payment will be made, as
provided in the Rights Agreement.

     No holder of this Rights Certificate, as such, shall be entitled to vote or
receive dividends or be deemed for any purpose the holder of the Common Shares
or of any other securities of the Company which may at any time be issuable on
the exercise hereof, nor shall anything contained in the Rights Agreement or
herein be construed to confer upon the holder hereof, as such, any of the rights
of a stockholder of the Company or any right to vote for the election of
directors or upon any matter submitted to stockholders at any meeting thereof,
or to give or withhold consent to any corporate action, or to receive notice of
meetings or other actions affecting stockholders (except as provided in the
Rights Agreement), or to receive dividends or subscription rights, or otherwise,
until the Right or Rights evidenced by this Rights Certificate shall have been
exercised as provided in the Rights Agreement.

     This Rights Certificate shall not be valid or obligatory for any purpose
until it shall have been countersigned by the Rights Agent.


                                         A-2.
<PAGE>

     WITNESS the facsimile signature of the proper officers of the Company and
its corporate seal.  Dated as of _____________, ____.

ATTEST:                                 ADAPTIVE BROADBAND CORPORATION


                                        By:
- -------------------------                    -----------------------------------

                                        Title:
                                               ---------------------------------

Countersigned:

BANKBOSTON, N.A.

By:
   -----------------------------
   Authorized Signature


                                         A-3.
<PAGE>

                      FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE

                                  FORM OF ASSIGNMENT

          (To be executed by the registered holder if such holder desires to
transfer the Rights Certificate.)

          FOR VALUE RECEIVED ___________________________ hereby sells, assigns
and transfers unto ____________________________________________________________

                    (Please print name and address of transferee)

________________________________________________________________________________
________________________________________________________________________________
this Rights Certificate, together with all right, title and interest therein,
and does hereby irrevocably constitute and appoint
______________________________ Attorney, to transfer the within Rights
Certificate on the books of the within-named Company, with full power of
substitution.

Dated: __________________________, _____


                                             -----------------------------
                                             Signature

Signature Guaranteed:

          Signatures must be guaranteed by an "eligible guarantor institution"
as defined in Rule 17Ad-15 promulgated under the Securities Exchange Act of
1934, as amended.

- ----------------------------------------

                                    CERTIFICATION

          The undersigned hereby certifies that (1) the Rights evidenced by this
Rights Certificate are not being sold, assigned or transferred by or on behalf
of a Person who is or was an Acquiring Person, an Interested Stockholder or an
Affiliate or Associate thereof (as such terms are defined in the Rights
Agreement); and (2) after due inquiry and to the best of the knowledge of the
undersigned, the undersigned did not acquire the Rights evidenced by this Rights
Certificate from any Person who is or was an Acquiring Person, an Interested
Stockholder, or an Affiliate or Associate thereof.


                                             -----------------------------
                                             Signature


                                         A-4.
<PAGE>

          Form of Reverse Side of Rights Certificate -- continued

                             FORM OF ELECTION TO PURCHASE

                         (To be executed if holder desires to
                          exercise the Rights Certificate.)


To BankBoston, N.A.:

          The undersigned hereby irrevocably elects to exercise ________________
Rights represented by this Rights Certificate to purchase the Common Shares
issuable upon the exercise of such Rights and requests that certificates for
such Common Shares be issued in the name of:

Please insert social security or other identifying number:______________________

________________________________________________________________________________
                           (Please print name and address)

________________________________________________________________________________

If such number of Rights shall not be all the Rights evidenced by this Rights
Certificate, a new Rights Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to :

Please insert social security or other identifying
number:________________________________

______________________________________________________________________________
                           (Please print name and address)

______________________________________________________________________________

Dated: ___________________, _____       _____________________________
                                             Signature


Signature Guaranteed:

          Signatures must be guaranteed by an "eligible guarantor institution"
as defined in Rule 17Ad-15 promulgated under the Securities Exchange Act of
1934, as amended.


- ----------------------------------------


                                         A-5.
<PAGE>

          Form of Reverse Side of Rights Certificate -- continued

                                    CERTIFICATION

          The undersigned hereby certifies that (1) the Rights evidenced by this
Rights Certificate are not beneficially owned by nor are they being exercised on
behalf of an Acquiring Person, an Interested Stockholder or an Affiliate or
Associate thereof (as such terms are defined in the Rights Agreement); and
(2) after due inquiry and to the best of the knowledge of the undersigned, the
undersigned did not acquire the Rights evidenced by this Rights Certificate from
any Person who is or was an Acquiring Person, an Interested Stockholder, or an
Affiliate or Associate thereof.

                                             -----------------------------
                                             Signature



                                         A-6.
<PAGE>

                                        NOTICE

     The signature in the foregoing Forms of Assignment and Election must
conform to the name as written upon the face of this Rights Certificate in every
particular, without alteration or enlargement or any change whatsoever.

     In the event the certification set forth above in the Form of Assignment or
the Form of Election to Purchase, as the case may be, is not completed, the
Company and the Rights Agent will deem the beneficial owner of the Rights
evidenced by this Rights Certificate to be an Acquiring Person or an Affiliate
or Associate thereof (as defined in the Rights Agreement) and such Assignment or
Election to Purchase will not be honored.







                                         A-7.
<PAGE>

                                      EXHIBIT B

                            ADAPTIVE BROADBAND CORPORATION

                            SUMMARY OF RIGHTS TO PURCHASE
                                    COMMON SHARES

     The Board of Directors of Adaptive Broadband Corporation adopted a Rights
Agreement dated as of July 21, 1999 (the "1999 Rights Agreement"), between the
Company and BankBoston, N.A. (the "Rights Agent") pursuant to which Board of
Directors of the Company authorized and declared a dividend of one Right for
each share of the Company's Common Stock outstanding at the close of business on
the Record Date and authorized and directed the issuance of one Right with
respect to each share of Common Stock that subsequently becomes outstanding.
Each Right entitles the registered holder to purchase from the Company one
Common Share, of the Company at an initial exercise price of $80.00 per Common
Share (the "Purchase Price"), subject to adjustment.  The description and terms
of the Rights are set forth in the 1999 Rights Agreement.  The 1999 Rights
Agreement replaces the Rights Agreement by and between Adaptive Broadband
Corporation (formerly California Microwave, Inc.) and BankBoston, N.A.
(successor to Bank of America, N.T. & S.A.) dated as July 27, 1989, as amended
(the "1989 Rights Agreement"), which expires on July 26, 1999, and shall be
effective upon expiration of the 1989 Rights Agreement.

DETACHMENT AND TRANSFER OF RIGHTS

     Initially, the Rights will be evidenced by the stock certificates
representing Common Shares then outstanding, and no separate Right Certificates
will be distributed.  Until the earlier to occur of (i) a public announcement
that a person or group of affiliated or associated persons, has become an
"Acquiring Person" (as such term is defined in the 1999 Rights Agreement) or
(ii) 10 business days (or such later date as the Board may determine) following
the commencement of, or announcement of an intention to make, a tender offer or
exchange offer which would result in the beneficial ownership by an Acquiring
Person of 20% or more of the outstanding Common Shares (the earlier of such
dates being called the "Distribution Date"), the Rights will be evidenced, with
respect to any of the Common Share certificates outstanding as of the Record
Date, by such Common Share certificate.  In general, an "Acquiring Person" is a
person, the affiliates or associates of such person, or a group, which has
acquired beneficial ownership of 20% or more of the outstanding Common Shares.

     The 1999 Rights Agreement provides that, until the Distribution Date (or
earlier redemption or expiration of the Rights), the Rights will be transferable
with and only with the Common Shares.  Until the Distribution Date (or earlier
redemption or expiration of the Rights), new Common Share certificates issued
after the Record Date upon transfer or new issuance of Common Shares will
contain a notation incorporating the 1999 Rights Agreement by reference.  Until
the Distribution Date (or earlier redemption or expiration of the Rights) the
surrender or transfer of any certificates for Common Shares outstanding as of
the Record Date, even without such notation or a copy of this Summary of Rights
being attached thereto, will also constitute the transfer of the Rights
associated with the Common Shares represented by such certificate.  As



                                         B-1.
<PAGE>

soon as practicable following the Distribution Date, separate certificates
evidencing the Rights ("Right Certificates") will be mailed to holders of record
of the Common Shares as of the close of business on the Distribution Date and
such separate Right Certificates alone will evidence the Rights.

EXERCISABILITY OF RIGHTS

     The Rights are not exercisable until the Distribution Date.  The Rights
will expire on June 30, 2002 (the "Final Expiration Date"), unless the Final
Expiration Date is extended or unless the Rights are earlier redeemed or
exchanged by the Company, in each case as described below.  Until a Right is
exercised, the holder thereof, as such, will have no rights as a stockholder of
the Company, including, without limitation, the right to vote or to receive
dividends.

     The Purchase Price payable, and the number of Common Shares or other
securities or property issuable or payable, upon exercise of the Rights are
subject to adjustment from time to time to prevent dilution.  The number of
outstanding Rights and the number of Common Shares issuable upon exercise of
each Right are also subject to adjustment in the event of a stock split of the
Common Shares or a stock dividend on the Common Shares payable in Common Shares,
or subdivisions, consolidations or combinations of the Common Shares occurring,
in any such case, prior to the Distribution Date.  With certain exceptions, no
adjustment in the Purchase Price will be required until cumulative adjustments
require an adjustment of at least 1% in such Purchase Price.  No fractional
Common Shares will be issued and in lieu thereof, an adjustment in cash will be
made based on the market price of the Common Shares on the last trading day
prior to the date of exercise.

TRIGGER OF FLIP-IN AND FLIP-OVER RIGHTS

     In the event that any person or group of affiliated or associated persons
becomes an Acquiring Person, proper provision shall be made so that each holder
of a Right, other than Rights beneficially owned by the Acquiring Person or any
affiliate or associate thereof (which will thereafter be void), will thereafter
have the right to receive upon exercise that number of Common Shares having a
market value of two times the exercise price of the Right.  This right will
commence on the date of public announcement that a person has become an
Acquiring Person (or the effective date of a registration statement relating to
distribution of the rights, if later) and terminate 60 days later (subject to
adjustment in the event exercise of the rights is enjoined).

     In the event that the Company is acquired in a merger or other business
combination transaction or 50% or more of its consolidated assets or earning
power are sold to an Acquiring Person, its affiliates or associates or certain
other persons in which such persons have an interest, proper provision will be
made so that each such holder of a Right will thereafter have the right to
receive, upon the exercise thereof at the then current exercise price of the
Right, that number of shares of common stock of the acquiring company which at
the time of such transaction will have a market value of two times the exercise
price of the Right.

REDEMPTION AND EXCHANGE OF RIGHTS


                                         B-2.
<PAGE>

     At any time prior to the earliest of (i) the close of business on the day
of the first public announcement that a person has become an Acquiring Person,
or (ii) the Final Expiration Date, the Board of Directors of the Company may
redeem the Rights in whole, but not in part, at a price of $.01 per Right (the
"Redemption Price").  In general, the redemption of the Rights may be made
effective at such time on such basis with such conditions as the Board of
Directors in its sole discretion may establish.  Immediately upon any redemption
of the Rights, the right to exercise the Rights will terminate and the only
right of the holders of Rights will be to receive the Redemption Price.

     At any time after any Person becomes an Acquiring Person and prior to the
acquisition by such person or group of 50% or more of the outstanding Common
Shares, the Board of Directors of the Company may exchange the Rights (other
than Rights owned by such person or group which will have become void), in whole
or in part, at an exchange ratio of one Common Share, or, under circumstances
set forth in the 1999 Rights Agreement, cash, property or other securities of
the Company, per Right (with value equal to such Common Shares).

AMENDMENT OF RIGHTS

     The terms of the Rights generally may be amended by the Board of Directors
of the Company without the consent of the holders of the Rights, except that
from and after such time as the Rights are distributed no such amendment may
adversely affect the interests of the holders of the Rights (excluding the
interest of any Acquiring Person).

ADDITIONAL INFORMATION

     A copy of the 1999 Rights Agreement has been filed with the Securities and
Exchange Commission as an Exhibit to a Current Report on Form 8-K dated July 21,
1999.  A copy of the 1999 Rights Agreement is available from the Company by
writing to:  Legal Department, Adaptive Broadband Corporation, 1143 Borregas
Ave., Sunnyvale, CA 94089.  This summary description of the Rights is not
intended to be complete and is qualified in its entirety by reference to the
1999 Rights Agreement, which is hereby incorporated herein by reference.






                                         B-3.

<PAGE>

                              FORM OF RIGHTS CERTIFICATE

Certificate No. R-                                                  _____ Rights

     NOT EXERCISABLE AFTER JUNE 30, 2002 OR EARLIER IF NOTICE OF REDEMPTION IS
     GIVEN OR IF EXCHANGE OCCURS.  THE RIGHTS ARE SUBJECT TO REDEMPTION AT $.01
     PER RIGHT AND TO EXCHANGE ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.

                                  RIGHTS CERTIFICATE

                            ADAPTIVE BROADBAND CORPORATION

     This certifies that ________________________, or registered assigns, is the
registered owner of the number of Rights set forth above, each of which entitles
the owner thereof, subject to the terms, provisions and conditions of the Rights
Agreement, dated as of July 21, 1999 (the "Rights Agreement"), between Adaptive
Broadband Corporation, a Delaware corporation (the "Company"), and BankBoston,
N.A. (the "Rights Agent"), to purchase from the Company at any time after the
Distribution Date (as such term is defined in the Rights Agreement) and prior to
5:00 P.M., New York City time, on June 30, 2002 at the office of the Rights
Agent designated for such purpose, or at the office of its successor as Rights
Agent, one fully paid, non-assessable share of Common Stock, par value $.10 per
share (the "Common Shares"), of the Company, at a purchase price of $80.00 per
Common Share (the "Purchase Price"), upon presentation and surrender of this
Rights Certificate with the Form of Election to Purchase duly executed.  The
number of Rights evidenced by this Rights Certificate (and the number of Common
Shares which may be purchased upon exercise hereof) set forth above, and the
Purchase Price set forth above, are the number and Purchase Price as of July 26,
1999 based on the Common Shares as constituted at such date.

     From and after the time any Person becomes an Acquiring Person, (as such
terms are defined in the Rights Agreement), if the Rights evidenced by this
Rights Certificate are beneficially owned by (1) an Acquiring Person or an
Affiliate or Associate of any such Acquiring Person (as such terms are defined
in the Rights Agreement), (2) a transferee of any such Acquiring Person,
Associate or Affiliate who becomes a transferee after the Acquiring Person
becomes such or (3) under certain circumstances specified in the Rights
Agreement, a transferee of any such Acquiring Person, Associate or Affiliate who
becomes a transferee prior to or concurrently with the Acquiring Person becoming
such, such Rights shall become null and void without any further action and no
holder hereof shall have any right with respect to such Rights from and after
the time any Person becomes an Acquiring Person.

     As provided in the Rights Agreement, the Purchase Price and the number of
Common Shares which may be purchased upon the exercise of the Rights evidenced
by this Rights Certificate are subject to modification and adjustment upon the
happening of certain events.

                                     1.

<PAGE>

     This Rights Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, as amended from time to time, which terms,
provisions and conditions are hereby incorporated herein by reference and made a
part hereof and to which Rights Agreement reference is hereby made for a full
description of the rights, limitations of rights, obligations, duties and
immunities hereunder of the Rights Agent, the Company and the holders of the
Rights Certificates.  Copies of the Rights Agreement are on file at the
principal executive offices of the Company and the above-mentioned offices of
the Rights Agent.

     This Right Certificate, with or without other Rights Certificates, upon
surrender at the office of the Rights Agent designated for such purpose, may be
exchanged for another Rights Certificate or Rights Certificates of like tenor
and date evidencing Rights entitling the holder to purchase a like aggregate
number of Common Shares as the Rights evidenced by the Rights Certificate or
Rights Certificates surrendered shall have entitled such holder to purchase.  If
this Rights Certificate shall be exercised (other than pursuant to Section
11(a)(ii) of the Rights Agreement) in part, the holder shall be entitled to
receive upon surrender hereof another Rights Certificate or Rights Certificates
for the number of whole Rights not exercised.  If this Rights Certificate shall
be exercised in whole or in part pursuant to Section 11(a)(ii) of the Rights
Agreement, the holder shall be entitled to receive this Rights Certificate duly
marked to indicate that such exercise has occurred as set forth in the Rights
Agreement.

     Subject to the provisions of the Rights Agreement, the Rights evidenced by
this Rights Certificate (1) may be redeemed by the Company at a redemption price
of $.01 per Right or (2) may be exchanged in whole or in part for Common Shares.

     No fractional Common Shares will be issued upon the exercise of any Right
or Rights evidenced hereby, but in lieu thereof a cash payment will be made, as
provided in the Rights Agreement.

     No holder of this Rights Certificate, as such, shall be entitled to vote or
receive dividends or be deemed for any purpose the holder of the Common Shares
or of any other securities of the Company which may at any time be issuable on
the exercise hereof, nor shall anything contained in the Rights Agreement or
herein be construed to confer upon the holder hereof, as such, any of the rights
of a stockholder of the Company or any right to vote for the election of
directors or upon any matter submitted to stockholders at any meeting thereof,
or to give or withhold consent to any corporate action, or to receive notice of
meetings or other actions affecting stockholders (except as provided in the
Rights Agreement), or to receive dividends or subscription rights, or otherwise,
until the Right or Rights evidenced by this Rights Certificate shall have been
exercised as provided in the Rights Agreement.

     This Rights Certificate shall not be valid or obligatory for any purpose
until it shall have been countersigned by the Rights Agent.


                                          2.
<PAGE>

     WITNESS the facsimile signature of the proper officers of the Company and
its corporate seal.  Dated as of _____________, ____.

ATTEST:                            ADAPTIVE BROADBAND CORPORATION

                                   By:
- --------------------------             -----------------------------------------

                                   Title:
                                          --------------------------------------

Countersigned:

BANKBOSTON, N.A.

By:
   -----------------------------
   Authorized Signature




                                          3.
<PAGE>

                      FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE

                                  FORM OF ASSIGNMENT

     (To be executed by the registered holder if such holder desires to transfer
the Rights Certificate.)

     FOR VALUE RECEIVED _______________________________ hereby sells, assigns
and transfers unto _____________________________________________________________
                    (Please print name and address of transferee)

________________________________________________________________________________
________________________________________________________________________________
this Rights Certificate, together with all right, title and interest therein,
and does hereby irrevocably constitute and appoint ____________________________
Attorney, to transfer the within Rights Certificate on the books of the
within-named Company, with full power of substitution.

Dated:                    ,
      -------------------- ----
                                        -----------------------------
                                        Signature

Signature Guaranteed:

     Signatures must be guaranteed by an "eligible guarantor institution" as
defined in Rule 17Ad-15 promulgated under the Securities Exchange Act of 1934,
as amended.

- -----------------------------------

                                    CERTIFICATION

     The undersigned hereby certifies that (1) the Rights evidenced by this
Rights Certificate are not being sold, assigned or transferred by or on behalf
of a Person who is or was an Acquiring Person, an Interested Stockholder or an
Affiliate or Associate thereof (as such terms are defined in the Rights
Agreement); and (2) after due inquiry and to the best of the knowledge of the
undersigned, the undersigned did not acquire the Rights evidenced by this Rights
Certificate from any Person who is or was an Acquiring Person, an Interested
Stockholder, or an Affiliate or Associate thereof.

                                        -----------------------------
                                        Signature


                                          4.
<PAGE>

     Form of Reverse Side of Rights Certificate -- continued

                             FORM OF ELECTION TO PURCHASE
                         (To be executed if holder desires to
                          exercise the Rights Certificate.)

To BankBoston, N.A.:

     The undersigned hereby irrevocably elects to exercise _____________________
Rights represented by this Rights Certificate to purchase the Common Shares
issuable upon the exercise of such Rights and requests that certificates for
such Common Shares be issued in the name of:

Please insert social security or other identifying number:______________________

________________________________________________________________________________
                           (Please print name and address)

________________________________________________________________________________

If such number of Rights shall not be all the Rights evidenced by this Rights
Certificate, a new Rights Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to :

Please insert social security or other identifying number:______________________

________________________________________________________________________________
                           (Please print name and address)

________________________________________________________________________________

Dated:                    ,
       -------------------  -----            -----------------------------
                                             Signature


Signature Guaranteed:

     Signatures must be guaranteed by an "eligible guarantor institution" as
defined in Rule 17Ad-15 promulgated under the Securities Exchange Act of 1934,
as amended.


- -----------------------------------



                                          5.
<PAGE>

     Form of Reverse Side of Rights Certificate -- continued

                                    CERTIFICATION

     The undersigned hereby certifies that (1) the Rights evidenced by this
Rights Certificate are not beneficially owned by nor are they being exercised on
behalf of an Acquiring Person, an Interested Stockholder or an Affiliate or
Associate thereof (as such terms are defined in the Rights Agreement); and
(2) after due inquiry and to the best of the knowledge of the undersigned, the
undersigned did not acquire the Rights evidenced by this Rights Certificate from
any Person who is or was an Acquiring Person, an Interested Stockholder, or an
Affiliate or Associate thereof.


                                        -----------------------------
                                        Signature





                                         A-6.
<PAGE>

                                        NOTICE

     The signature in the foregoing Forms of Assignment and Election must
conform to the name as written upon the face of this Rights Certificate in every
particular, without alteration or enlargement or any change whatsoever.

     In the event the certification set forth above in the Form of Assignment or
the Form of Election to Purchase, as the case may be, is not completed, the
Company and the Rights Agent will deem the beneficial owner of the Rights
evidenced by this Rights Certificate to be an Acquiring Person or an Affiliate
or Associate thereof (as defined in the Rights Agreement) and such Assignment or
Election to Purchase will not be honored.






                                         A-7.


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission