ADAPTIVE BROADBAND CORP
8-K, 2000-03-02
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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<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):  February 10, 2000

                         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 February 10, 2000, the Board of Directors of Adaptive Broadband
Corporation (the "Company") approved the adoption of an amended and restated
Share Purchase Rights Plan (the "Preferred Stock Rights Plan").  The Preferred
Stock Rights Plan amends and restates the Rights Agreement adopted by the Board
of Directors in June 1999 (the "Common Stock Rights Plan") and sets forth the
terms of the Company's Preferred Stock as it relates to the Share Purchase
Rights Plan.    The Board of Directors recently designated all 5,000,000 shares
of the Company's authorized Preferred Stock as Series A Junior Participating
Preferred Stock for use solely in connection with the Preferred Stock Rights
Plan.

     The terms of the Preferred Stock Rights Plan provide for the automatic
conversion of the outstanding rights to purchase Common Shares into rights to
purchase Series A Junior Participating Preferred Stock.  Accordingly, each right
to purchase a Common Share outstanding on February 11, 2000 (the "Record Date"),
with no further action on the part of the stockholders, became a right to
purchase one  Preferred Share (a "Right").  Each Right entitles the registered
holder to purchase from the Company one one-hundredth of a share of Series A
Junior Participating Preferred Stock, par value $.10 per share (the "Preferred
Shares"), at an initial exercise price of $300.00 per share (the "Purchase
Price"), subject to adjustment.  Each one one-hundredth of a share of Preferred
Shares has designations and powers, preferences and rights and the
qualifications, limitations and restrictions which make its value approximately
equal to the value of a Common Share.  The description and terms of the Rights
are set forth in the Amended and Restated Rights Agreement (the "Rights
Agreement"), dated as of February 10, 2000 entered into between the Company and
BankBoston, N.A., as rights agent (the "Rights Agent").

     Other material terms of the Preferred Stock Rights Plan remain the same as
the Common Stock Rights Plan.  The Preferred Stock Rights Plan requires the
Company to redeem or otherwise render the Preferred Stock Rights Plan
inapplicable if the Company receives certain types of offers to purchase the
Company.  In addition, the Preferred Stock Rights Plan will still expire on June
30, 2002

     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 Amended and Restated Rights Agreement as
Exhibit C thereof (the "Summary of Rights").

                                      1.
<PAGE>

     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 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.

     The Purchase Price payable, and the number of Preferred Shares, cash,
property, Common Shares, 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 Preferred Shares, (ii) upon
the grant to holders of the Preferred Shares of certain rights or warrants to
subscribe for or purchase Preferred Shares at a price, or securities convertible
into Preferred Shares with a conversion price, less than the then current market
price of the Preferred Shares or (iii) upon the distribution to holders of the
Preferred Shares of evidences of indebtedness or assets (excluding regular
periodic cash dividends paid out of earnings or retained earnings or dividends
payable in Preferred Shares) or of subscription rights or warrants (other than
those referred to above).  The exercise of Rights for Preferred Shares is at all
times subject to the availability of a sufficient number of authorized but
unissued Preferred Shares.

          The number of outstanding Rights and the number of one one-hundredths
of a Preferred Share 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,
consolidation or combinations of the Common Shares occurring, in any case, prior
to the Distribution Date.

     Preferred Shares purchasable upon exercise of the Rights will not be
redeemable.  Each Preferred Share will be entitled to a minimum preferential
quarterly dividend payment of $1.00 but will be entitled to an aggregate
dividend of 100 times the dividend declared per Common Share.  In the event of
liquidation, the holders of the Preferred Shares would be entitled to a minimum
preferential liquidation payment of $100 per share, but would be entitled to
receive an aggregate payment equal to 100 times the payment made per Common
Share.  Each Preferred Share will have 100 votes, voting together with the
Common Shares.  Finally, in the event of any merger, consolidation or other
transaction in which Common Shares are exchanged, each Preferred Share will be
entitled to receive 100 times the amount of consideration received per Common
Share.  These rights are protected by customary anti-dilution provisions.
Because of

                                      2.
<PAGE>

the nature of the Preferred Shares' dividend and liquidation rights, the value
of one one-hundredth of a Preferred Share should approximate the value of one
Common Share.  The Preferred Shares would rank junior to any other series of
the Company's preferred stock.

     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 Shares, 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 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, Common Shares,
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

                                      3.
<PAGE>

fractional Preferred Shares will be issued (other than fractions which are
integral multiples of the number of one one-hundredths of a Preferred Share
issuable upon the exercise of one Right, which may, at the election of the
Company, be evidenced by depositary receipts), and in lieu thereof, an
adjustment in cash will be made based on the market price of the Preferred
Shares on the last trading day prior to the date of exercise.

     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.

     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.

     4.1    Registrant's Amended and Restated Certificate of Incorporation
            (including Certificate of Designation of Series A Junior
            Participating Preferred Stock.)

     99.1   Amended and Restated Rights Agreement dated as of February 10, 2000
            among Adaptive Broadband Corporation and BankBoston, N.A.

     99.2   Form of Rights Certificate.

                                      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:  March 2, 2000               By:  /s/  Donna S. Birks
                                         -----------------------------------
                                         Donna S. Birks
                                         Executive Vice President and
                                         Chief Financial Officer


                                      6.
<PAGE>

                               INDEX TO EXHIBITS

     4.1    Registrant's Amended and Restated Certificate of Incorporation
            (including Certificate of Designation of Series A Junior
            Participating Preferred Stock.)

     99.1   Amended and Restated Rights Agreement dated as of February 10, 2000
            among Adaptive Broadband Corporation and BankBoston, N.A.

     99.2   Form of Rights Certificate.

<PAGE>

                                                                   Exhibit 4.1

                          CERTIFICATE OF DESIGNATION
                                       OF

                 SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                        (Pursuant to Section 151 of the
                       Delaware General Corporation Law)

     Adaptive Broadband Corporation, a corporation organized and existing under
the General Corporation Law of the State of Delaware (hereinafter called the
"Company"), hereby certifies that the following resolution was adopted by the
Board of Directors of the Corporation as required by Section 151 of the General
Corporation Law by Unanimous Written Consent on February 10, 2000:

          Resolved, that pursuant to the authority granted to and vested in the
     Board of Directors of the Company in accordance with the provisions of its
     Amended and Restated Certificate of Incorporation, the Board of Directors
     hereby creates a series of Preferred Stock, par value $.10 per share, of
     the Company and hereby states the designation and number of shares, and
     fixes the relative designations and the powers, preferences and rights, and
     the qualifications, limitations and restrictions thereof (in addition to
     the provisions set forth in the Certificate of Incorporation of the
     Company, which are applicable to the Preferred Stock of all classes and
     series), as follows:

          Series A Junior Participating Preferred Stock:

     Section 1.  Designation and Amount.  Five Million (5,000,000) shares of
Preferred Stock, $.10 par value, are designated "Series A Junior Participating
Preferred Stock" with the designations and the powers, preferences and rights,
and the qualifications, limitations and restrictions specified herein (the
"Junior Preferred Stock").  Such number of shares may be increased or decreased
by resolution of the Board of Directors; provided, that no decrease shall reduce
the number of shares of Junior Preferred Stock to a number less than the number
of shares then outstanding plus the number of shares reserved for issuance upon
the exercise of outstanding options, rights or warrants or upon the conversion
of any outstanding securities issued by the Company convertible into Junior
Preferred Stock.

                                       1.
<PAGE>

     Section 2.  Dividends and Distributions.

          (A)  Subject to the rights of the holders of any shares of any series
of Preferred Stock (or any similar stock) ranking prior and superior to the
Junior Preferred Stock with respect to dividends, the holders of shares of
Junior Preferred Stock, in preference to the holders of Common Stock, par value
$.10 per share (the "Common Stock"), of the Company, and of any other junior
stock, shall be entitled to receive, when, as and if declared by the Board of
Directors out of funds legally available for the purpose, quarterly dividends
payable in cash on the first day of April, July, October and January in each
year (each such date being referred to herein as a "Quarterly Dividend Payment
Date"), commencing on the first Quarterly Dividend Payment Date after the first
issuance of a share or fraction of a share of Junior Preferred Stock, in an
amount per share (rounded to the nearest cent) equal to the greater of (a)
$l.00 or (b) subject to the provision for adjustment hereinafter set forth, 100
times the aggregate per share amount of all cash dividends, and 100 times the
aggregate per share amount (payable in kind) of all non-cash dividends or other
distributions, other than a dividend payable in shares of Common Stock or a
subdivision of the outstanding shares of Common Stock (by reclassification or
otherwise), declared on the Common Stock since the immediately preceding
Quarterly Dividend Payment Date or, with respect to the first Quarterly
Dividend Payment Date, since the first issuance of any share or fraction of a
share of Junior Preferred Stock.  In the event the Company shall at any time
declare or pay any dividend on the Common Stock payable in shares of Common
Stock, or effect a subdivision or combination or consolidation of the
outstanding shares of Common Stock (by reclassification or otherwise than by
payment of a dividend in shares of Common Stock) into a greater or lesser
number of shares of Common Stock, then in each such case the amount to which
holders of shares of Junior Preferred Stock were entitled immediately prior to
such event under clause (b) of the preceding sentence shall be adjusted by
multiplying such amount by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

          (B)  The Company shall declare a dividend or distribution on the
Junior Preferred Stock as provided in paragraph (A) of this Section immediately
after it declares a dividend or distribution on the Common Stock (other than a
dividend payable in shares of Common Stock); provided, that in the event no
dividend or distribution shall have been declared on the Common Stock during
the period between any Quarterly Dividend Payment Date and the next subsequent
Quarterly Dividend Payment Date, a dividend of $1.00 per share on the Junior
Preferred Stock shall nevertheless be payable on such subsequent Quarterly
Dividend Payment Date.

          (C)  Dividends shall begin to accrue and be cumulative on outstanding
shares of Junior Preferred Stock from the Quarterly Dividend Payment Date next
preceding the date of issue of such shares, unless the date of issue of such
shares is prior to the record date for the first Quarterly Dividend Payment
Date, in which case dividends on such shares shall begin to accrue from the
date of issue of such shares, or unless the date of issue is a Quarterly
Dividend Payment Date or is a date after the record date for the determination
of holders of shares of Junior Preferred Stock entitled to receive a quarterly
dividend and before such Quarterly Dividend Payment Date, in either of which
events such dividends shall begin to accrue and be cumulative from such
Quarterly Dividend Payment Date.  Accrued but unpaid dividends shall not bear
interest.  Dividends paid on the shares of Junior Preferred Stock in an amount
less than the total

                                       2.
<PAGE>

amount of such dividends at the time accrued and payable on such shares shall
be allocated pro rata on a share-by-share basis among all such shares at the
time outstanding. The Board of Directors may fix a record date for the
determination of holders of shares of Junior Preferred Stock entitled to
receive payment of a dividend or distribution declared thereon, which record
date shall be not more than 60 days prior to the date fixed for the payment
thereof.

     Section 3.  Voting Rights.  The holders of shares of Junior Preferred Stock
shall have the following voting rights:

          (A)  Subject to the provision for adjustment hereinafter set forth,
each share of Junior Preferred Stock shall entitle the holder thereof to 100
votes on all matters submitted to a vote of the stockholders of the Company.
In the event the Company shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the number of votes per share to which holders of shares of Junior
Preferred Stock were entitled immediately prior to such event shall be adjusted
by multiplying such number by a fraction, the numerator of which is the number
of shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

          (B)  Except as otherwise provided herein, in any other Certificate of
Designation creating a series of Preferred Stock or any similar stock, or by
law, the holders of shares of Junior Preferred Stock and the holders of shares
of Common Stock and any other capital stock of the Company having general
voting rights shall vote together as one class on all matters submitted to a
vote of stockholders of the Company.

          (C)  Except as set forth herein, or as otherwise provided by law,
holders of Junior Preferred Stock shall have no special voting rights and their
consent shall not be required (except to the extent they are entitled to vote
with holders of Common Stock as set forth herein) for taking any corporate
action.

     Section 4.  Certain Restrictions.

          (A)  Whenever quarterly dividends or other dividends or distributions
payable on the Junior Preferred Stock as provided in Section 2 are in arrears,
thereafter and until all accrued and unpaid dividends and distributions,
whether or not declared, on shares of Junior Preferred Stock outstanding shall
have been paid in full, the Company shall not:

               (i)  declare or pay dividends, or make any other distributions,
on any shares of stock ranking junior (either as to dividends or upon
liquidation, dissolution or winding up) to the Junior Preferred Stock;

               (ii) declare or pay dividends, or make any other distributions,
on any shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with the Junior Preferred Stock, except
dividends paid ratably on the Junior

                                       3.
<PAGE>

Preferred Stock and all such parity stock on which dividends are payable or in
arrears in proportion to the total amounts to which the holders of all such
shares are then entitled;

               (iii) redeem or purchase or otherwise acquire for consideration
shares of any stock ranking junior (either as to dividends or upon liquidation,
dissolution or winding up) to the Junior Preferred Stock, provided that the
Company may at any time redeem, purchase or otherwise acquire shares of any
such junior stock in exchange for shares of any stock of the Company ranking
junior (either as to dividends or upon dissolution, liquidation or winding up)
to the Junior Preferred Stock; or

               (iv) redeem or purchase or otherwise acquire for consideration
any shares of Junior Preferred Stock, or any shares of stock ranking on a
parity (either as to dividends or upon liquidation, dissolution or winding up)
with the Junior Preferred Stock, except in accordance with a purchase offer
made in writing or by publication (as determined by the Board of Directors) to
all holders of such shares upon such terms as the Board of Directors, after
consideration of the respective annual dividend rates and other relative rights
and preferences of the respective series and classes, shall determine in good
faith will result in fair and equitable treatment among the respective series
or classes.

          (B)  The Company shall not permit any subsidiary of the Company to
purchase or otherwise acquire for consideration any shares of stock of the
Company unless the Company could, under paragraph (A) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.

     Section 5.  Reacquired Shares.  Any shares of Junior Preferred Stock
purchased or otherwise acquired by the Company in any manner whatsoever shall
be retired and cancelled promptly after the acquisition thereof.  All such
shares shall upon their cancellation become authorized but unissued shares of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
subject to the conditions and restrictions on issuance set forth herein, in the
Amended and Restated Certificate of Incorporation, or in any other Certificate
of Designation creating a series of Preferred Stock or any similar stock or as
otherwise required by law.

     Section 6.  Liquidation, Dissolution or Winding Up.  Upon any liquidation,
dissolution or winding up of the Company, no distribution shall be made (1) to
the holders of shares of stock ranking junior (either as to dividends or upon
liquidation, dissolution or winding up) to the Junior Preferred Stock unless,
prior thereto, the holders of shares of Junior Preferred Stock shall have
received $100 per share, plus an amount equal to accrued and unpaid dividends
and distributions thereon, whether or not declared, to the date of such payment,
provided that the holders of shares of Junior Preferred Stock shall be entitled
to receive an aggregate amount per share, subject to the provision for
adjustment hereinafter set forth, equal to 100 times the aggregate amount to be
distributed per share to holders of shares of Common Stock, or (2) to the
holders of shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with the Junior Preferred Stock, except
distributions made ratably on the Junior Preferred Stock and all such parity
stock in proportion to the total amounts to which the holders of all such shares
are entitled upon such liquidation, dissolution or winding up.  In the event the
Company shall at any time declare or pay any dividend on the Common Stock
payable in shares of Common Stock, or effect a subdivision or combination or
consolidation of

                                       4.
<PAGE>

the outstanding shares of Common Stock (by reclassification or otherwise than
by payment of a dividend in shares of Common Stock) into a greater or lesser
number of shares of Common Stock, then in each such case the aggregate amount
to which holders of shares of Junior Preferred Stock were entitled immediately
prior to such event under the proviso in clause (1) of the preceding sentence
shall be adjusted by multiplying such amount by a fraction the numerator of
which is the number of shares of Common Stock outstanding immediately after
such event and the denominator of which is the number of shares of Common Stock
that were outstanding immediately prior to such event.

     Section 7.  Consolidation, Merger, etc.  In case the Company shall enter
into any consolidation, merger, combination or other transaction in which the
shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case each share of
Junior Preferred Stock shall at the same time be similarly exchanged or changed
into an amount per share, subject to the provision for adjustment hereinafter
set forth, equal to 100 times the aggregate amount of stock, securities, cash
and/or any other property (payable in kind), as the case may be, into which or
for which each share of Common Stock is changed or exchanged.  In the event the
Company shall at any time declare or pay any dividend on the Common Stock
payable in shares of Common Stock, or effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock (by reclassification or
otherwise than by payment of a dividend in shares of Common Stock) into a
greater or lesser number of shares of Common Stock, then in each such case the
amount set forth in the preceding sentence with respect to the exchange or
change of shares of Junior Preferred Stock shall be adjusted by multiplying
such amount by a fraction, the numerator of which is the number of shares of
Common Stock outstanding immediately after such event and the denominator of
which is the number of shares of Common Stock that were outstanding immediately
prior to such event.

     Section 8.  No Redemption.  The shares of Junior Preferred Stock shall
not be redeemable.

     Section 9.  Rank.  The Junior Preferred Stock shall rank, with respect to
the payment of dividends and the distribution of assets, junior to all series
of any other class of the Company's Preferred Stock.

     Section 10.  Amendment.  The Amended and Restated Certificate of
Incorporation of the Company shall not be amended in any manner which would
materially alter or change the powers, preferences or special rights of the
Junior Preferred Stock so as to affect them adversely without the affirmative
vote of the holders of at least two-thirds of the outstanding shares of Junior
Preferred Stock, voting together as a single class.

                                       5.
<PAGE>

     In Witness Whereof, the undersigned have executed this certificate as of
February 25, 2000.


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

                                       6.

<PAGE>


                                                                    Exhibit 99.1





          ___________________________________________________________

                         ADAPTIVE BROADBAND CORPORATION

                                      and

                                BANKBOSTON, N.A.
                                as Rights Agent


                     Amended and Restated Rights Agreement

                         Dated as of February 10, 2000

          ___________________________________________________________
<PAGE>

                               Table of Contents

<TABLE>
<CAPTION>

<S>           <C>                                                                                                  <C>
Section 1.    Certain Definitions................................................................................   1

Section 2.    Appointment of Rights Agent........................................................................   5

Section 3.    Issue of Right Certificates........................................................................   5

Section 4.    Form of Right Certificates.........................................................................   7

Section 5.    Countersignature and Registration..................................................................   8

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

Section 7.    Exercise of Rights; Purchase Price; Expiration Date of Rights......................................   9

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

Section 9.    Availability of Preferred Shares...................................................................  12

Section 10.   Preferred Shares Record Date.......................................................................  13

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.........................................  22

Section 13.   Consolidation, Merger or Sale or Transfer of Assets or Earning Power...............................  22

Section 14.   Fractional Rights and Fractional Shares............................................................  26

Section 15.   Rights of Action...................................................................................  27

Section 16.   Agreement of Right Holders.........................................................................  28

Section 17.   Right Certificate Holder Not Deemed a Stockholder..................................................  28

Section 18.   Concerning the Rights Agent........................................................................  28

Section 19.   Merger or Consolidation or Change of Name of Rights Agent..........................................  29

Section 20.   Duties of Rights Agent.............................................................................  30

Section 21.   Change of Rights Agent.............................................................................  32

Section 22.   Issuance of New Right Certificates.................................................................  33

Section 23.   Redemption.........................................................................................  33

Section 24.   Exchange...........................................................................................  35

Section 25.   Notice of Certain Events...........................................................................  37

Section 26.   Notices............................................................................................  38

Section 27.   Supplements and Amendments.........................................................................  39

Section 28.   Determination and Actions by the Board of Directors, etc...........................................  39

Section 29.   Successors.........................................................................................  40
</TABLE>

                                       i
<PAGE>

                               Table of Contents
                                  (Continued)

<TABLE>
<CAPTION>

<S>           <C>                                                                                                  <C>
Section 30.   Benefits of this Agreement.........................................................................  40

Section 31.   Severability.......................................................................................  40

Section 32.   Governing Law......................................................................................  40

Section 33.   Counterparts.......................................................................................  40

Section 34.   Descriptive Headings                                                                                 40
</TABLE>

                                      ii
<PAGE>

                     Amended and Restated Rights Agreement

     This Amended and Restated Rights Agreement ("Agreement") is made and
entered into as of February 10, 2000, between Adaptive Broadband Corporation, a
Delaware corporation (the "Company"), and BankBoston, N.A., a national banking
association (the "Rights Agent").

                                    Recitals

     A.  The Board of Directors of the Company (the "Board of Directors")
adopted a Rights Agreement on June 17, 1999 regarding a dividend to holders of
the Company's common stock, par value $.10 per share ("Common Stock"), of rights
to purchase additional shares of Common Stock (the "Common Share Purchase
Rights"), on the terms and subject to the conditions therein (the "Rights
Agreement").

     B.  Subsequent to the adoption of the Rights Agreement, the Board of
Directors and the Company's stockholders approved an Amended and Restated
Certificate of Incorporation authorizing Five Million (5,000,000) shares of
Preferred Stock.  The Board of Directors then created and designated a Series A
Junior Participating Preferred Stock for use in connection with the Rights
Agreement.

     C.  The Board of Directors intends that the dividend of Common Stock
Purchase Rights, for each common share purchase right outstanding at the close
of business on February 11, 2000 (the "Record Date"), convert into a dividend of
one preferred share purchase right (a "Right"), each Right representing the
right to purchase one one-hundredth of a Preferred Share (as such term is
hereinafter defined), upon the terms and subject to the conditions herein set
forth.

     D.  The Board of Directors also intends that the dividend of Common Stock
Purchase Rights represent the dividend of one Right for 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.

     E.  The Board of Directors now deems that it is desirable and in the best
interests of the Company and its stockholders to amend and restate the Rights
Agreement to set forth the terms and conditions of the Rights with the Series A
Junior Participating Preferred Stock as their basis.

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

                                       4.
<PAGE>

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 (as such term is
     hereinafter defined) 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 consent of the Company and shall
     then become 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.

                                       5.
<PAGE>

(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
     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

                                       6.
<PAGE>

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.

(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)  "Preferred Shares" shall mean shares of Series A Junior Participating
     Preferred Stock, par value $.10 per share, of the Company having the
     designations and the powers, preferences and rights, and the
     qualifications, limitations and restrictions set forth in the Form of
     Certificate of Designation attached to this Agreement as Exhibit A.

(l)  "Purchase Price" shall have the meaning set forth in Section 7(b) hereof.

(m)  "Redemption Date" shall have the meaning set forth in Section 7 hereof.

(n)  "Shares Acquisition Date" shall mean the first date of public announcement
     by the Company or an Acquiring Person that an Acquiring

                                       7.
<PAGE>

     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.

(o)  "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.

(p)  "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).

(q)  "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.

Section 3.  Issue of Right 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

                                       8.
<PAGE>

     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
     Right Certificates) and not by separate Right Certificates, and (y) the
     Rights (and the right to receive Right 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 Right Certificate, in
     substantially the form of Exhibit B hereto (a "Right 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 Right
     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 Preferred Shares, in substantially the form
     of Exhibit C 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
     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 an Amended and Restated Rights Agreement
        between Adaptive Broadband Corporation (the "Company") and BankBoston,
        N.A. as Rights Agent (the "Rights Agent"), dated as of _______________,
        2000, as amended from time to time

                                       9.
<PAGE>

        (the "Amended and Restated 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 Amended and Restated 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 Amended and Restated
        Rights Agreement without charge after receipt of a written request
        therefor.  As described in the Amended and Restated Rights Agreement,
        Rights issued to any Person who becomes an Acquiring Person or an
        Affiliate or Associate thereof (as defined in the Amended and Restated
        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.

Section 4.  Form of Right Certificates.

(a)  The Right Certificates (and the form of election to purchase Preferred
     Shares, the form of assignment and the form of certification to be printed
     on the reverse thereof) shall be substantially the same as Exhibit B 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 Right Certificates shall entitle the holders thereof to
     purchase such number of one one-hundredths of a Preferred Share as shall be
     set forth therein at the price per one one-hundredth of a

                                      10.
<PAGE>

     Preferred Share set forth therein (the "Purchase Price"), but the number of
     such one one-hundredths of a Preferred Share and the Purchase Price shall
     be subject to adjustment as provided herein.

(b)  Any Right 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 Right Certificate issued pursuant to Section 6 or
     Section 11 hereof upon transfer, exchange, replacement or adjustment of any
     other Right Certificate referred to in this sentence, shall contain (to the
     extent feasible) the following legend:

        The Rights represented by this Right 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 Amended and Restated Rights Agreement). Accordingly, this
        Right 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 Right Certificate.

Section 5.  Countersignature and Registration.  The Right 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 Right
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 Right Certificates shall cease to be
such officer of the Company before countersignature by the Rights Agent and
issuance and delivery by the Company, such Right 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 Right
Certificates had not ceased to be such officer of the Company; and any Right
Certificate may be signed on behalf of the Company by any person who, at the
actual date of the execution of such Right Certificate, shall be a proper
officer of the Company to sign such Right 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 Right Certificates issued hereunder. Such books shall show the names and
addresses of the respective holders of the Right Certificates, the number of
Rights evidenced on its face by each of the Right Certificates and the date of
each of the Right Certificates.

                                      11.
<PAGE>

Section 6.  Transfer, Split Up, Combination and Exchange of Right Certificates;
Mutilated, Destroyed, Lost or Stolen Right 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 Right Certificate or Right Certificates may be transferred, split up,
combined or exchanged for another Right Certificate or Right Certificates,
entitling the registered holder to purchase a like number of one one-hundredths
of a Preferred Share as the Right Certificate or Right Certificates surrendered
then entitled such holder to purchase.  Any registered holder desiring to
transfer, split up, combine or exchange any Right Certificate or Right
Certificates shall make such request in writing delivered to the Rights Agent,
and shall surrender the Right Certificate or Right 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 Right Certificate until the registered holder shall have completed
and signed the certificate contained in the form of assignment on the reverse
side of such Right 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
Right Certificate or Right 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 Right 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 Right
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 the Company and the Rights Agent of all reasonable expenses
incidental thereto, and upon surrender to the Rights Agent and cancellation of
the Right Certificate if mutilated, the Company will issue, execute and deliver
a new Right Certificate of like tenor to the Rights Agent for countersignature
and delivery to the registered holder in lieu of the Right 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 Right 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 Right
     Certificate, with the form of election to purchase on the reverse side

                                      12.
<PAGE>

     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 one one-hundredth of a Preferred 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"), (iii) the time at
     which such Rights are exchanged as provided in Section 24 hereof or (iv)
     such time as this Agreement shall terminate pursuant to Article X of the
     Company's Amended and Restated Certificate of Incorporation, as amended
     from time to time.

(b)  The purchase price (the "Purchase Price") for each one one-hundredth of a
     Preferred Share pursuant to the exercise of a Right shall initially be
     $300.00 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)  Upon receipt of a Right 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 shares to be purchased
     and an amount equal to any applicable transfer tax by cash, certified
     check, cashier's check, bank draft or money order payable to the order of
     the Company, the Rights Agent shall thereupon promptly (i) (A) requisition
     from any transfer agent for the Preferred Shares (or make available, if the
     Rights Agent is the transfer agent) certificates for the number of
     Preferred Shares to be purchased and the Company hereby irrevocably
     authorizes and directs its transfer agent to comply with all such requests,
     or (B) if the Company, in its sole discretion, shall have elected to
     deposit the Preferred Shares issuable upon exercise of the Rights hereunder
     into a depository, requisition from the depositary agent depositary
     receipts representing such number of one one-hundredths of a Preferred
     Share as are to be purchased (in which case certificates for the Preferred
     Shares represented by such receipts shall be deposited by the transfer
     agent with the depositary agent) and the Company hereby directs the
     depositary agent to comply with such request, (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 hereof, (iii)
     promptly after receipt of such certificates or depositary receipts, cause
     the same to be delivered to or upon the order of the registered holder of
     such Right 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 Right Certificate.  Notwithstanding the foregoing provisions of this
     Section 7(c), the Company may suspend the issuance of Preferred Shares upon
     exercise of a Right for a reasonable period, not in excess of 90 days,

                                      13.
<PAGE>

     during which the Company seeks to register under the Securities Act of
     1933, as amended, and any applicable securities law of any other
     jurisdiction, the Preferred Shares or other securities to be issued
     pursuant to the Rights (including Common Shares).

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

(d)  In case the registered holder of any Right Certificate shall exercise fewer
     than all the Rights evidenced thereby, a new Right Certificate evidencing
     Rights equivalent to the Rights remaining unexercised shall be issued by
     the Rights Agent to the registered holder of such Right Certificate or to
     his duly authorized assigns, subject to the provisions of Section 14
     hereof.

(e)  The Company covenants and agrees that it will cause to be reserved and kept
     available out of its authorized and unissued Preferred Shares or any
     Preferred Shares held in its treasury, the number of Preferred Shares that
     will be sufficient to permit the exercise in full of all outstanding Rights
     in accordance with this Section 7.

(f)  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 Right 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 Right Certificates.  All Right
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 Right 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 Right Certificate purchased or acquired by the
Company otherwise than upon the exercise thereof.  The Rights Agent shall
deliver all canceled Right

                                      14.
<PAGE>

Certificates to the Company approximately one and one half years after the
cancellation date, or shall, at the written request of the Company, destroy such
canceled Right Certificates, and in such case shall deliver a certificate of
destruction thereof to the Company.

Section 9.  Availability of Preferred Shares.  The Company covenants and
agrees that so long as the Preferred Shares (and, after the time a person
becomes an Acquiring Person, Common Shares or any other securities) issuable
upon the exercise of the Rights may be listed on any national securities
exchange or quotation system, the Company shall use its best efforts to cause,
from and after such time as the Rights become exercisable, all shares reserved
for such issuance to be listed on such exchange or quotation system 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 Preferred Shares (or Common Shares and other
securities, as the case may be) delivered upon exercise of Rights shall, at the
time of delivery of the certificates for such Preferred Shares (subject to
payment of the Purchase Price), be duly and validly authorized and issued and
fully paid and nonassessable shares or other securities.

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 Right Certificates or of any
Preferred Shares upon the 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 Right Certificates to a person other than, or the issuance or
delivery of certificates or depositary receipts for the Preferred Shares in a
name other than that of, the registered holder of the Right Certificate
evidencing Rights surrendered for exercise or to issue or to deliver any
certificates or depositary receipts for Preferred 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 Right Certificate at the time of surrender) or until it
has been established to the Company's reasonable 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

                                      15.
<PAGE>

(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.  Preferred Shares Record Date.  Each person in whose name any
certificate for Preferred 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 Preferred Shares or other securities represented thereby on, and such
certificate shall be dated, the date upon which the Right 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 Preferred 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 Preferred Shares or other securities
transfer books of the Company are open.  Prior to the exercise of the Rights
evidenced thereby, the holder of a Right Certificate, as such, shall not be
entitled to any rights of a holder of Preferred 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.

Section 11.  Adjustment of Purchase Price, Number of Shares or Number of Rights.
The Purchase Price, the number of Preferred 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 Preferred Shares payable in Preferred Shares,
     (B) subdivide the outstanding Preferred Shares, (C) combine the outstanding
     Preferred Shares into a smaller number of Preferred Shares or (D) issue any
     shares of its capital stock in a reclassification of the Preferred 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 Right exercised after
     such time shall be entitled to receive the aggregate number and kind of
     shares of capital stock which, if such Right had been exercised immediately
     prior to such date and at a time when the Preferred Shares transfer

                                      16.
<PAGE>

     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 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 one one-hundredths of a
     Preferred Share for which a Right is then exercisable, in accordance with
     the terms of this Agreement and in lieu of Preferred Shares, such number of
     Common Shares as shall equal the result obtained by (A) multiplying the
     then current Purchase Price by the number of one one-hundredths of a
     Preferred Share 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.

                                      17.
<PAGE>

      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 Right Certificates or other
      Person as a result of its failure to make any determinations with respect
      to an Acquiring Person or its Affiliates, Associates or transferees
      hereunder.  No Right 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 Right 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, Common Shares,

                                      18.
<PAGE>

      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 Preferred Shares entitling them (for
     a period expiring within 45 calendar days after such record date) to
     subscribe for or purchase Preferred Shares (or shares having the same
     designations and the powers, preferences and rights, and the
     qualifications, limitations and restrictions as the Preferred Shares
     ("equivalent preferred shares")) or securities convertible into Preferred
     Shares or equivalent preferred shares at a price per Preferred Share or
     equivalent preferred share (or having a conversion price per share, if a
     security convertible into Preferred Shares or equivalent shares of
     preferred stock of the Company) less than the then current per share market
     price of the Preferred 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 Preferred Shares outstanding on such record date plus the
     number of Preferred Shares which the aggregate offering price of the total
     number of Preferred 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
     Preferred Shares outstanding on such record date plus the number of
     additional Preferred Shares and/or equivalent shares of preferred stock 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

                                      19.
<PAGE>

     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.  Preferred 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 Preferred 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 Preferred 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 Preferred Shares (as such term is hereinafter defined) on such
     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 Preferred Share and the denominator of
     which shall be such current per share market price of the Preferred 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

                                      20.
<PAGE>

     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 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 Preferred Shares shall be determined in accordance with the
     method set forth in Section 11(d)(i) hereof.  If the Preferred Shares are
     not publicly traded, the "current per share market price" of the Preferred
     Shares shall be conclusively deemed to be the current per share market
     price of the Common Shares as

                                      21.
<PAGE>

     determined pursuant to Section 11(d)(i) hereof (appropriately adjusted to
     reflect any stock split, stock dividend or similar transaction occurring
     after the date hereof) multiplied by one hundred.  If neither the Common
     Shares nor the Preferred Shares are publicly held or so listed or traded,
     "current per share market price" 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
     one-hundredth of a Preferred Share or one ten-thousandth of any 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 Right thereafter exercised shall become entitled to receive
     any shares of capital stock of the Company other than Preferred Shares,
     thereafter the number of such other shares so receivable upon exercise of
     any Right shall be subject to adjustment from time to time in a manner and
     on terms as nearly equivalent as practicable to the provisions with respect
     to the Preferred 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 Preferred 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 one one-hundredths of a
     Preferred Share 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 one one-hundredths of a Preferred Share (calculated to the
     nearest one one-millionth of a Preferred Share) obtained

                                      22.
<PAGE>

     by (i) multiplying (x) the number of one one-hundredths of a Preferred
     Share 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 one one-hundredths of a Preferred Share
     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 one one-hundredths of a Preferred Share 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 Right
     Certificates have been issued, shall be at least 10 days later than the
     date of the public announcement.  If Right 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 Right Certificates on such record date
     Right 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, shall cause to be distributed
     to such holders of record in substitution and replacement for the Right
     Certificates held by such holders prior to the date of adjustment, and upon
     surrender thereof, if required by the Company, new Right Certificates
     evidencing all the Rights to which such holders shall be entitled after
     such adjustment.  Right 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 Right 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 one one-hundredths of a Preferred Share issuable upon the
     exercise of the Rights, the Right Certificates theretofore and thereafter
     issued may continue to express the Purchase Price and the number of one
     one-hundredths of a Preferred Share which were expressed in the initial
     Right Certificates issued hereunder.


                                      23.
<PAGE>

(k)  Before taking any action that would cause an adjustment reducing the
     Purchase Price below one one-hundredth of the then par value, if any, of
     the Preferred 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 Preferred 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 Right exercised after such record date of
     the Preferred 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 extent that it in its sole discretion shall determine to be
     advisable in order that any consolidation or subdivision of the Preferred
     Shares, issuance wholly for cash of any Preferred Shares at less than the
     current market price, issuance wholly for cash of Preferred Shares or
     securities which by their terms are convertible into or exchangeable for
     Preferred Shares, dividends on Preferred Shares payable in Preferred Shares
     or issuance of rights, options or warrants referred to hereinabove in
     Section 11(b), hereinafter made by the Company to holders of its Preferred
     Shares shall not be taxable to such stockholders.

(o)  In the event that at any time after the date of this Agreement and prior to
     the Distribution Date, the Company shall (i) declare or pay any dividend on
     the Common Shares payable in Common Shares or (ii) effect a subdivision,
     combination or consolidation of the Common Shares (by reclassification or
     otherwise than by payment of dividends in Common Shares) into a greater or
     lesser number of Common Shares, then in any

                                      24.
<PAGE>

     such case (A) the number of one one-hundredths of a Preferred Share
     purchasable after such event upon proper exercise of each Right shall be
     determined by multiplying the number of one one-hundredths of a Preferred
     Share so purchasable immediately prior to such event by a fraction, the
     numerator of which is the number of Common Shares outstanding immediately
     before such event and the denominator of which is the number of Common
     Shares outstanding immediately after such event, and (B) each Common Share
     outstanding immediately after such event shall have issued with respect to
     it that number of Rights which each Common Share outstanding immediately
     prior to such event had issued with respect to it.  The adjustments
     provided for in this Section 11(o) shall be made successively whenever
     such a dividend is declared or paid or such a subdivision, combination or
     consolidation is effected.

(p)  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 or the
Preferred Shares a copy of such certificate and (c) mail a brief summary thereof
to each holder of a Right 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

                                      25.
<PAGE>

     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 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 one one-hundredths
     of a Preferred Share for which a Right is then exercisable in accordance
     with the terms of this Agreement and in lieu of Preferred Shares, 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 one one-hundredths of a Preferred Share 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

                                      26.
<PAGE>

     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 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

                                      27.
<PAGE>

      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;

(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 of assets, 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 of assets, 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).

                                      28.
<PAGE>

Section 14.  Fractional Rights and Fractional Shares.

(a)  The Company shall not be required to issue fractions of Rights or to
     distribute Right Certificates which evidence fractional Rights.  In lieu of
     such fractional Rights, there shall be paid to the registered holders of
     the Right 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 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 Preferred Shares
     (other than fractions which are integral multiples of one one-hundredth of
     a Preferred Share) upon exercise of the Rights or to distribute
     certificates which evidence fractional Preferred Shares (other than
     fractions which are integral multiples of one one-hundredth of a Preferred
     Share).  Fractions of Preferred Shares in integral multiples of one one-
     hundredth of a Preferred Share may, at the election of the Company, be
     evidenced by depositary receipts; provided, however, that holders of such
     depositary receipts shall have all of the designations and the powers,
     preferences and rights, and the qualifications, limitations and
     restrictions to which they are entitled as beneficial owners of the
     Preferred Shares represented by such depositary receipts.  In lieu of
     fractional Preferred Shares that are not integral multiples of one one-
     hundredth of a Preferred Share, the Company shall pay to the registered
     holders of Right Certificates at the time such Rights are exercised as
     herein provided an amount in cash equal

                                      29.
<PAGE>

     to the same fraction of the current market value of one Preferred Share.
     For the purposes of this Section 14(b), the current market value of a
     Preferred Share shall be the current per share market price of the
     Preferred 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 (other than Preferred Shares) 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 Right 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 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 one-hundredth of a Preferred 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 Right Certificates (and, prior to the Distribution Date, the registered
holders of the Common Shares) and any registered holder of any Right 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 Right 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 Right Certificate in the manner
provided in such Right 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

                                      30.
<PAGE>

costs and expenses, including attorneys fees, incurred by them in any action to
enforce the provisions of this Agreement.

Section 16.  Agreement of Right 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 Right 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 Right 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 notations
     of ownership or writing on the Right 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.  Right Certificate Holder Not Deemed a Stockholder.  No holder, as
such, of any Right Certificate shall be entitled to vote, receive dividends or
be deemed for any purpose the holder of the Preferred 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
Right Certificate be construed to confer upon the holder of any Right
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 Right or Rights evidenced by
such Right Certificate 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

                                      31.
<PAGE>

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 Right Certificate or
certificate for the Preferred Shares or 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.

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

                                      32.
<PAGE>

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 Right 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 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 Right
     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 Right 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 Right 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 Right Certificates after receipt of a certificate pursuant to
     Section 12 hereof describing such change or adjustment); nor shall it by

                                      33.
<PAGE>

     any act hereunder be deemed to make any representation or warranty as to
     the authorization or reservation of any Preferred Shares to be issued
     pursuant to this Agreement or any Right Certificate or as to whether any
     Preferred 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 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

                                      34.
<PAGE>

     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 Right 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' notice in writing mailed to the Company and to each transfer agent for the
Common Shares or Preferred Shares by registered or certified mail, and to the
holders of the Right 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 or Preferred Shares by registered or
certified mail, and to the holders of the Right 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 Right Certificate (who shall, with such notice, submit his
Right Certificate for inspection by the Company), then the registered holder of
any Right 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

                                      35.
<PAGE>

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 or Preferred Shares, and mail a notice
thereof in writing to the registered holders of the Right 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 Right Certificates.  Notwithstanding any of the
provisions of this Agreement or of the Rights to the contrary, the Company may,
at its option, issue new Right 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 Right 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
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 Right 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 Right 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
Right Certificate would be issued, and (ii) no Right 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

                                      36.
<PAGE>

     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 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

                                      37.
<PAGE>

     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 Right
     Certificates shall be null and void without any further action by the
     Company.

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

                                      38.
<PAGE>

     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 necessary
     to authorize, issue or pay, upon the exchange of the Rights, cash
     (including by way of a reduction of the Purchase Price), property, Common
     Shares, 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 Right 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

                                      39.
<PAGE>

     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 Preferred Shares
     (other than fractions which are integral multiples of one one-hundredth of
     a Preferred Share) upon exchange of the Rights or to distribute
     certificates which evidence fractional Preferred Shares (other than
     fractions which are integral multiples of one one-hundredth of a Preferred
     Share).  Fractions of Preferred Shares in integral multiples of one one-
     hundredth of a Preferred Share may, at the election of the Company, be
     evidenced by depositary receipts; provided, however, that holders of such
     depositary receipts shall have all of the designations and the powers,
     preferences and rights, and the qualifications, limitations and
     restrictions to which they are entitled as beneficial owners of the
     Preferred Shares represented by such depositary receipts.  In lieu of
     fractional Preferred Shares that are not integral multiples of one one-
     hundredth of a Preferred Share, the Company shall pay to the registered
     holders of Right 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 Preferred Share.  For the purposes of this Section
     24(e), the current market value of a Preferred Share shall be one hundred
     (100) times 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.

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 Preferred Shares or to make any other
     distribution to the holders of its Preferred Shares (other than a regular
     quarterly cash dividend), (ii) to offer to the holders of its Preferred
     Shares rights or warrants to subscribe for or to purchase any additional
     Preferred Shares or shares of stock of any class or any other securities,
     rights or options, (iii) to effect any reclassification of its Preferred
     Shares (other than a reclassification involving only the subdivision of
     outstanding Preferred 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

                                      40.
<PAGE>

     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 Right 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 and/or the Preferred 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 Preferred 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 and/or the Preferred 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 Right 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 Right 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:

                    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
Right 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

                                      41.
<PAGE>

Notices or demands authorized by this Agreement to be given or made by the
Company or the Rights Agent to the holder of any Right 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.  This Agreement is intended to amend,
restate and supersede the Rights Agreement in its entirety.  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 Right 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 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 this Agreement).  All such

                                      42.
<PAGE>

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 Right 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 Right 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 Right 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.

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.

                                      43.
<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/  Joshua P. McGinn
                                  ---------------------------------------------

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


Exhibit A - Certificate of Designation

Exhibit B - Form of Right Certificate

Exhibit C - Summary of Rights to Purchase Preferred Shares

                                      44.
<PAGE>

                                    Form of

                         Certificate of Designation of
                 Series A Junior Participating Preferred Stock

              (Exhibit A to Amended and Restated Rights Agreement)

                        (Pursuant to Section 151 of the
                       Delaware General Corporation Law)


     Adaptive Broadband Corporation, a corporation organized and existing under
the General Corporation Law of the State of Delaware (hereinafter called the
"Company"), hereby certifies that the following resolution was adopted by the
Board of Directors of the Corporation as required by Section 151 of the General
Corporation Law by Unanimous Written Consent on February 10, 2000:

          Resolved, that pursuant to the authority granted to and vested in the
     Board of Directors of the Company in accordance with the provisions of its
     Amended and Restated Certificate of Incorporation, the Board of Directors
     hereby creates a series of Preferred Stock, par value $.10 per share, of
     the Company and hereby states the designation and number of shares, and
     fixes the relative designations and the powers, preferences and rights, and
     the qualifications, limitations and restrictions thereof (in addition to
     the provisions set forth in the Certificate of Incorporation of the
     Company, which are applicable to the Preferred Stock of all classes and
     series), as follows:

          Series A Junior Participating Preferred Stock:

     Section 1.  Designation and Amount.  Five Million (5,000,000) shares of
Preferred Stock, $.10 par value, are designated "Series A Junior Participating
Preferred Stock" with the designations and the powers, preferences and rights,
and the qualifications, limitations and restrictions specified herein (the
"Junior Preferred Stock").  Such number of shares may be increased or decreased
by resolution of the Board of Directors; provided, that no decrease shall
reduce the number of shares of Junior Preferred Stock to a number less than the
number of shares then outstanding plus the number of shares reserved for
issuance upon the exercise of outstanding options, rights or warrants or upon
the conversion of any outstanding securities issued by the Company convertible
into Junior Preferred Stock.

                                     A-1.
<PAGE>

     Section 2.  Dividends and Distributions.

(A)  Subject to the rights of the holders of any shares of any series of
     Preferred Stock (or any similar stock) ranking prior and superior to the
     Junior Preferred Stock with respect to dividends, the holders of shares of
     Junior Preferred Stock, in preference to the holders of Common Stock, par
     value $.10 per share (the "Common Stock"), of the Company, and of any other
     junior stock, shall be entitled to receive, when, as and if declared by the
     Board of Directors out of funds legally available for the purpose,
     quarterly dividends payable in cash on the first day of April, July,
     October and January in each year (each such date being referred to herein
     as a "Quarterly Dividend Payment Date"), commencing on the first Quarterly
     Dividend Payment Date after the first issuance of a share or fraction of a
     share of Junior Preferred Stock, in an amount per share (rounded to the
     nearest cent) equal to the greater of (a) $l.00 or (b) subject to the
     provision for adjustment hereinafter set forth, 100 times the aggregate per
     share amount of all cash dividends, and 100 times the aggregate per share
     amount (payable in kind) of all non-cash dividends or other distributions,
     other than a dividend payable in shares of Common Stock or a subdivision of
     the outstanding shares of Common Stock (by reclassification or otherwise),
     declared on the Common Stock since the immediately preceding Quarterly
     Dividend Payment Date or, with respect to the first Quarterly Dividend
     Payment Date, since the first issuance of any share or fraction of a share
     of Junior Preferred Stock.  In the event the Company shall at any time
     declare or pay any dividend on the Common Stock payable in shares of Common
     Stock, or effect a subdivision or combination or consolidation of the
     outstanding shares of Common Stock (by reclassification or otherwise than
     by payment of a dividend in shares of Common Stock) into a greater or
     lesser number of shares of Common Stock, then in each such case the amount
     to which holders of shares of Junior Preferred Stock were entitled
     immediately prior to such event under clause (b) of the preceding sentence
     shall be adjusted by multiplying such amount by a fraction, the numerator
     of which is the number of shares of Common Stock outstanding immediately
     after such event and the denominator of which is the number of shares of
     Common Stock that were outstanding immediately prior to such event.

(B)  The Company shall declare a dividend or distribution on the Junior
     Preferred Stock as provided in paragraph (A) of this Section immediately
     after it declares a dividend or distribution on the Common Stock (other
     than a dividend payable in shares of Common Stock); provided, that in the
     event no dividend or distribution shall have been declared on the Common
     Stock during the period between any Quarterly Dividend Payment Date and the
     next subsequent Quarterly Dividend Payment Date, a dividend of $1.00 per
     share on the Junior Preferred Stock shall nevertheless be payable on such
     subsequent Quarterly Dividend Payment Date.

                                     A-2.
<PAGE>

(C)  Dividends shall begin to accrue and be cumulative on outstanding shares of
     Junior Preferred Stock from the Quarterly Dividend Payment Date next
     preceding the date of issue of such shares, unless the date of issue of
     such shares is prior to the record date for the first Quarterly Dividend
     Payment Date, in which case dividends on such shares shall begin to accrue
     from the date of issue of such shares, or unless the date of issue is a
     Quarterly Dividend Payment Date or is a date after the record date for the
     determination of holders of shares of Junior Preferred Stock entitled to
     receive a quarterly dividend and before such Quarterly Dividend Payment
     Date, in either of which events such dividends shall begin to accrue and be
     cumulative from such Quarterly Dividend Payment Date.  Accrued but unpaid
     dividends shall not bear interest.  Dividends paid on the shares of Junior
     Preferred Stock in an amount less than the total amount of such dividends
     at the time accrued and payable on such shares shall be allocated pro rata
     on a share-by-share basis among all such shares at the time outstanding.
     The Board of Directors may fix a record date for the determination of
     holders of shares of Junior Preferred Stock entitled to receive payment of
     a dividend or distribution declared thereon, which record date shall be not
     more than 60 days prior to the date fixed for the payment thereof.

Section 3.  Voting Rights.  The holders of shares of Junior Preferred Stock
shall have the following voting rights:

(A)  Subject to the provision for adjustment hereinafter set forth, each share
     of Junior Preferred Stock shall entitle the holder thereof to 100 votes on
     all matters submitted to a vote of the stockholders of the Company.  In the
     event the Company shall at any time declare or pay any dividend on the
     Common Stock payable in shares of Common Stock, or effect a subdivision or
     combination or consolidation of the outstanding shares of Common Stock (by
     reclassification or otherwise than by payment of a dividend in shares of
     Common Stock) into a greater or lesser number of shares of Common Stock,
     then in each such case the number of votes per share to which holders of
     shares of Junior Preferred Stock were entitled immediately prior to such
     event shall be adjusted by multiplying such number by a fraction, the
     numerator of which is the number of shares of Common Stock outstanding
     immediately after such event and the denominator of which is the number of
     shares of Common Stock that were outstanding immediately prior to such
     event.

(B)  Except as otherwise provided herein, in any other Certificate of
     Designation creating a series of Preferred Stock or any similar stock, or
     by law, the holders of shares of Junior Preferred Stock and the holders of
     shares of Common Stock and any other capital stock of the Company having
     general voting rights shall vote together as one class on all matters
     submitted to a vote of stockholders of the Company.


                                     A-3.
<PAGE>

(C)  Except as set forth herein, or as otherwise provided by law, holders of
     Junior Preferred Stock shall have no special voting rights and their
     consent shall not be required (except to the extent they are entitled to
     vote with holders of Common Stock as set forth herein) for taking any
     corporate action.

Section 4.  Certain Restrictions.

(A)  Whenever quarterly dividends or other dividends or distributions payable on
     the Junior Preferred Stock as provided in Section 2 are in arrears,
     thereafter and until all accrued and unpaid dividends and distributions,
     whether or not declared, on shares of Junior Preferred Stock outstanding
     shall have been paid in full, the Company shall not:

(i)   declare or pay dividends, or make any other distributions, on any shares
      of stock ranking junior (either as to dividends or upon liquidation,
      dissolution or winding up) to the Junior Preferred Stock;

(ii)  declare or pay dividends, or make any other distributions, on any shares
      of stock ranking on a parity (either as to dividends or upon liquidation,
      dissolution or winding up) with the Junior Preferred Stock, except
      dividends paid ratably on the Junior Preferred Stock and all such parity
      stock on which dividends are payable or in arrears in proportion to the
      total amounts to which the holders of all such shares are then entitled;

(iii) redeem or purchase or otherwise acquire for consideration shares of any
      stock ranking junior (either as to dividends or upon liquidation,
      dissolution or winding up) to the Junior Preferred Stock, provided that
      the Company may at any time redeem, purchase or otherwise acquire shares
      of any such junior stock in exchange for shares of any stock of the
      Company ranking junior (either as to dividends or upon dissolution,
      liquidation or winding up) to the Junior Preferred Stock; or

(iv)  redeem or purchase or otherwise acquire for consideration any shares of
      Junior Preferred Stock, or any shares of stock ranking on a parity
      (either as to dividends or upon liquidation, dissolution or winding up)
      with the Junior Preferred Stock, except in accordance with a purchase
      offer made in writing or by publication (as determined by the Board of
      Directors) to all holders of such shares upon such terms as the Board of
      Directors, after consideration of the respective annual dividend rates
      and other relative rights and preferences of the respective series and
      classes, shall determine in good faith will result in fair and equitable
      treatment among the respective series or classes.

(B)  The Company shall not permit any subsidiary of the Company to purchase or
     otherwise acquire for consideration any shares of stock of the Company


                                     A-4.
<PAGE>

     unless the Company could, under paragraph (A) of this Section 4, purchase
     or otherwise acquire such shares at such time and in such manner.

Section 5.  Reacquired Shares.  Any shares of Junior Preferred Stock purchased
or otherwise acquired by the Company in any manner whatsoever shall be retired
and cancelled promptly after the acquisition thereof.  All such shares shall
upon their cancellation become authorized but unissued shares of Preferred Stock
and may be reissued as part of a new series of Preferred Stock subject to the
conditions and restrictions on issuance set forth herein, in the Amended and
Restated Certificate of Incorporation, or in any other Certificate of
Designation creating a series of Preferred Stock or any similar stock or as
otherwise required by law.

Section 6.  Liquidation, Dissolution or Winding Up.  Upon any liquidation,
dissolution or winding up of the Company, no distribution shall be made (1) to
the holders of shares of stock ranking junior (either as to dividends or upon
liquidation, dissolution or winding up) to the Junior Preferred Stock unless,
prior thereto, the holders of shares of Junior Preferred Stock shall have
received $100 per share, plus an amount equal to accrued and unpaid dividends
and distributions thereon, whether or not declared, to the date of such payment,
provided that the holders of shares of Junior Preferred Stock shall be entitled
to receive an aggregate amount per share, subject to the provision for
adjustment hereinafter set forth, equal to 100 times the aggregate amount to be
distributed per share to holders of shares of Common Stock, or (2) to the
holders of shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with the Junior Preferred Stock, except
distributions made ratably on the Junior Preferred Stock and all such parity
stock in proportion to the total amounts to which the holders of all such shares
are entitled upon such liquidation, dissolution or winding up.  In the event the
Company shall at any time declare or pay any dividend on the Common Stock
payable in shares of Common Stock, or effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock (by reclassification or
otherwise than by payment of a dividend in shares of Common Stock) into a
greater or lesser number of shares of Common Stock, then in each such case the
aggregate amount to which holders of shares of Junior Preferred Stock were
entitled immediately prior to such event under the proviso in clause (1) of the
preceding sentence shall be adjusted by multiplying such amount by a fraction
the numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

Section 7.  Consolidation, Merger, etc.  In case the Company shall enter into
any consolidation, merger, combination or other transaction in which the shares
of Common Stock are exchanged for or changed into other stock or securities,
cash and/or any other property, then in any such case each share of Junior
Preferred Stock shall at the same time be similarly exchanged or changed into an
amount per share, subject to the provision for adjustment hereinafter set forth,
equal to 100 times the aggregate amount of stock, securities, cash and/or any
other property (payable in kind), as the case may be, into which or for which
each share of Common Stock is changed or exchanged.  In the event the Company
shall at any time declare or pay any dividend on the Common Stock payable in
shares of Common Stock, or effect a subdivision or combination or consolidation
of the outstanding shares of Common Stock (by reclassification or otherwise than
by payment of a dividend in shares of Common Stock) into a greater or lesser
number of shares of Common Stock, then in each such case the amount set forth

                                     A-5.
<PAGE>

in the preceding sentence with respect to the exchange or change of shares of
Junior Preferred Stock shall be adjusted by multiplying such amount by a
fraction, the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to
such event.

Section 8.  No Redemption.  The shares of Junior Preferred Stock shall not be
redeemable.

Section 9.  Rank.  The Junior Preferred Stock shall rank, with respect to the
payment of dividends and the distribution of assets, junior to all series of any
other class of the Company's Preferred Stock.

Section 10.  Amendment.  The Amended and Restated Certificate of Incorporation
of the Company shall not be amended in any manner which would materially alter
or change the powers, preferences or special rights of the Junior Preferred
Stock so as to affect them adversely without the affirmative vote of the holders
of at least two-thirds of the outstanding shares of Junior Preferred Stock,
voting together as a single class.

                                     A-6.
<PAGE>

     In Witness Whereof, the undersigned have executed this certificate as of
February ___, 2000.



                                  --------------------------------------
                                  Kenneth J. Wees
                                  Secretary

                                     A-7.
<PAGE>

                           FORM OF RIGHTS CERTIFICATE

              (Exhibit B to Amended and Restated Rights Agreement)

Certificate No. R-                                                _____ Rights

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

                               RIGHT 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
Amended and Restated Rights Agreement, dated as of February 10, 2000 (the
"Amended and Restated 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 Amended and Restated Rights Agreement) and
prior to 5:00 p.m. Eastern 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 one-hundredth of a fully paid non-assessable share of Series A Junior
Participating Preferred Stock, par value $.10 per share (the "Preferred
Shares"), of the Company, at a purchase price of $300.00 per one one-hundredth
of a Preferred Share (the "Purchase Price"), upon presentation and surrender of
this Right Certificate with the Form of Election to Purchase duly executed.  The
number of Rights evidenced by this Right Certificate (and the number of one one-
hundredths of a Preferred Share 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 February 10, 2000, based on the Preferred Shares as constituted at
such date.

     From and after the time any Person becomes an Acquiring Person, (as such
terms are defined in the Amended and Restated Rights Agreement), if the Rights
evidenced by this Right Certificate are beneficially owned by (i) an Acquiring
Person or an Affiliate or Associate of any such Acquiring Person (as such terms
are defined in the Amended and Restated Rights Agreement), (ii) a transferee of
any such Acquiring Person, Associate or Affiliate who becomes a transferee after
the Acquiring Person becomes such, or (iii) under certain circumstances
specified in the Amended and Restated Rights Agreement, a transferee of any such
Acquiring Person, Associate or Affiliate who becomes a transferee prior to or
concurrently with the

                                     B-1.
<PAGE>

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 Amended and Restated Rights Agreement, the Purchase
Price and the number of one one-hundredths of a Preferred Share which may be
purchased upon the exercise of the Rights evidenced by this Right Certificate
are subject to modification and adjustment upon the happening of certain events.

     This Right Certificate is subject to all of the terms, provisions and
conditions of the Amended and Restated 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 the Amended and Restated 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 Right Certificates.  Copies of
the Amended and Restated 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 Right Certificates, upon
surrender at the office of the Rights Agent designated for such purpose, may be
exchanged for another Right Certificate or Right Certificates of like tenor and
date evidencing Rights entitling the holder to purchase a like aggregate number
of Preferred Shares as the Rights evidenced by the Right Certificate or Right
Certificates surrendered shall have entitled such holder to purchase.  If this
Right Certificate shall be exercised in part, the holder shall be entitled to
receive upon surrender hereof another Right Certificate or Right Certificates
for the number of whole Rights not exercised.

     Subject to the provisions of the Amended and Restated Rights Agreement, the
Rights evidenced by this Certificate (i) may be redeemed by the Company at a
redemption price of $.01 per Right or (ii) may be exchanged in whole or in part
for shares of the Company's Common Stock, par value $.10 per share, or, upon
circumstances set forth in the Amended and Restated Rights Agreement, cash,
property or other securities of the Company, including fractions of a share of
Preferred Stock.

     No fractional Preferred Shares will be issued upon the exercise of any
Right or Rights evidenced hereby (other than fractions which are integral
multiples of one one-hundredth of a Preferred Share, which may, at the election
of the Company, be evidenced by depositary receipts) but in lieu thereof a cash
payment will be made, as provided in the Amended and Restated Rights Agreement.

     No holder of this Right Certificate shall be entitled to vote or receive
dividends or be deemed for any purpose the holder of the Preferred 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 Amended and Restated 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

                                     B-2.
<PAGE>

affecting stockholders (except as provided in the Amended and Restated Rights
Agreement), or to receive dividends or subscription rights, or otherwise, until
the Right or Rights evidenced by this Right Certificate shall have been
exercised as provided in the Amended and Restated Rights Agreement.

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

     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.,
as Rights Agent

By: ____________________________
     Authorized Signatory

                                     B-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 Right Certificate.)

     For Value Received ______________________________________ hereby sells,
assigns and transfers unto


_______________________________________________________________________________
                 (Please print name and address of transferee)

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

Dated:  ____________________



                                    ________________________________________
                                    Signature

                                     B-4.
<PAGE>

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.

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

     The undersigned hereby certifies that (1) the Rights evidenced by this
Right 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 Amended and
Restated 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 Right Certificate from any Person who is or was an Acquiring
Person, an Interested Stockholder, or an Affiliate or Associate thereof.



                                    ______________________________________
                                    Signature

                                     B-5.
<PAGE>

                   Form of Reverse Side of Rights Certificate


                          FORM OF ELECTION TO PURCHASE

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

To BankBoston, N.A.:

     The undersigned hereby irrevocably elects to exercise ______________
___________________________ Rights represented by this Right Certificate to
purchase the Preferred Shares issuable upon the exercise of such Rights and
requests that certificates for such Preferred 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 Right
Certificate, a new Right 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

                                     B-6.
<PAGE>

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.

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

     The undersigned hereby certifies that (1) the Rights evidenced by this
Right 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 Amended and Restated 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 Right
Certificate from any Person who is or was an Acquiring Person, an Interested
Stockholder, or an Affiliate or Associate thereof.



                                    _________________________________________
                                    Signature


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


                                     NOTICE

     The signature in the Form of Assignment or Form of Election to Purchase, as
the case may be, must conform to the name as written upon the face of this Right
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 Right Certificate to be an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Amended and Restated Rights Agreement) and
such Assignment or Election to Purchase will not be honored.

                                     B-7.

<PAGE>

                                                                    Exhibit 99.2


                          FORM OF RIGHTS CERTIFICATE


Certificate No. R-                                                  _____ Rights

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

                               RIGHT 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
Amended and Restated Rights Agreement, dated as of February 10, 2000 (the
"Amended and Restated 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 Amended and Restated Rights Agreement) and
prior to 5:00 p.m. Eastern 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 one-hundredth of a fully paid non-assessable share of Series A Junior
Participating Preferred Stock, par value $.10 per share (the "Preferred
Shares"), of the Company, at a purchase price of $300.00 per one one-hundredth
of a Preferred Share (the "Purchase Price"), upon presentation and surrender of
this Right Certificate with the Form of Election to Purchase duly executed.  The
number of Rights evidenced by this Right Certificate (and the number of one one-
hundredths of a Preferred Share 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 February 10, 2000, based on the Preferred Shares as constituted at
such date.

     From and after the time any Person becomes an Acquiring Person, (as such
terms are defined in the Amended and Restated Rights Agreement), if the Rights
evidenced by this Right Certificate are beneficially owned by (i) an Acquiring
Person or an Affiliate or Associate of any such Acquiring Person (as such terms
are defined in the Amended and Restated Rights Agreement), (ii) a transferee of
any such Acquiring Person, Associate or Affiliate who becomes a transferee after
the Acquiring Person becomes such, or (iii) under certain circumstances
specified in the Amended and Restated 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.

                                       1
<PAGE>

     As provided in the Amended and Restated Rights Agreement, the Purchase
Price and the number of one one-hundredths of a Preferred Share which may be
purchased upon the exercise of the Rights evidenced by this Right Certificate
are subject to modification and adjustment upon the happening of certain events.

     This Right Certificate is subject to all of the terms, provisions and
conditions of the Amended and Restated 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 the Amended and Restated 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 Right Certificates.  Copies of
the Amended and Restated 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 Right Certificates, upon
surrender at the office of the Rights Agent designated for such purpose, may be
exchanged for another Right Certificate or Right Certificates of like tenor and
date evidencing Rights entitling the holder to purchase a like aggregate number
of Preferred Shares as the Rights evidenced by the Right Certificate or Right
Certificates surrendered shall have entitled such holder to purchase.  If this
Right Certificate shall be exercised in part, the holder shall be entitled to
receive upon surrender hereof another Right Certificate or Right Certificates
for the number of whole Rights not exercised.

     Subject to the provisions of the Amended and Restated Rights Agreement, the
Rights evidenced by this Certificate (i) may be redeemed by the Company at a
redemption price of $.01 per Right or (ii) may be exchanged in whole or in part
for shares of the Company's Common Stock, par value $.10 per share, or, upon
circumstances set forth in the Amended and Restated Rights Agreement, cash,
property or other securities of the Company, including fractions of a share of
Preferred Stock.

     No fractional Preferred Shares will be issued upon the exercise of any
Right or Rights evidenced hereby (other than fractions which are integral
multiples of one one-hundredth of a Preferred Share, which may, at the election
of the Company, be evidenced by depositary receipts) but in lieu thereof a cash
payment will be made, as provided in the Amended and Restated Rights Agreement.

     No holder of this Right Certificate shall be entitled to vote or receive
dividends or be deemed for any purpose the holder of the Preferred 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 Amended and Restated 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 Amended and Restated Rights Agreement), or to receive dividends
or subscription rights, or otherwise, until the Right or Rights evidenced by
this Right Certificate shall have been exercised as provided in the Amended and
Restated Rights Agreement.

                                       2
<PAGE>

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

     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.,
as Rights Agent


By:
    ---------------------------------
         Authorized Signatory

                                       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 Right Certificate.)

     For Value Received                                        hereby sells,
                        --------------------------------------
assigns and transfers unto


- --------------------------------------------------------------------------------
                 (Please print name and address of transferee)

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

Dated:
       --------------------------

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

                                       4
<PAGE>

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.

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

     The undersigned hereby certifies that (1) the Rights evidenced by this
Right 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 Amended and
Restated 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 Right Certificate from any Person who is or was an Acquiring
Person, an Interested Stockholder, or an Affiliate or Associate thereof.


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

                                       5
<PAGE>

                          FORM OF ELECTION TO PURCHASE

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


To BankBoston, N.A.:

     The undersigned hereby irrevocably elects to exercise
                            Rights represented by this Right Certificate to
- ---------------------------
purchase the Preferred Shares issuable upon the exercise of such Rights and
requests that certificates for such Preferred 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 Right
Certificate, a new Right 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

                                       6
<PAGE>

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.

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

     The undersigned hereby certifies that (1) the Rights evidenced by this
Right 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 Amended and Restated 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 Right
Certificate from any Person who is or was an Acquiring Person, an Interested
Stockholder, or an Affiliate or Associate thereof.


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


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

                                    NOTICE

     The signature in the Form of Assignment or Form of Election to Purchase, as
the case may be, must conform to the name as written upon the face of this Right
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 Right Certificate to be an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Amended and Restated Rights Agreement) and
such Assignment or Election to Purchase will not be honored.

                                       7


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