RADYNE COMSTREAM INC
S-2/A, 1999-05-06
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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      As filed with the Securities and Exchange Commission on May __, 1999
                           Registration No. 333-70403
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 AMENDMENT No. 1
                                       to
                                    FORM S-2
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                   ----------

                              RADYNE COMSTREAM INC.
             (Exact name of Registrant as specified in its charter)




       NEW YORK                        3665                      11-2569467
(State or jurisdiction           (Primary Standard            (I.R.S. Employer
 of incorporation or         Industrial Classification       Identification No.)
     organization                   Code Number)

                                   ----------

                             3138 East Elwood Street
                             Phoenix, Arizona 85034
                                 (602) 437-9620
               (Address, including zip code and telephone number,
        including area code, of registrant's principal executive offices)

                                   ----------

                   Robert C. Fitting, Chief Executive Officer
                              Radyne ComStream Inc.
                             3138 East Elwood Street
                             Phoenix, Arizona 85034
                                 (602) 437-9620
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)


                                   ----------
                                    Copy to:

                             John B. Wade, III, Esq.
                              Dorsey & Whitney LLP
                                 250 Park Avenue
                               New York, NY 10177
                    (212) 415-9311/(212) 953-7201 (Telecopy)




<PAGE>



     Approximate date of commencement of proposed sale to the public: As soon as
practicable after the effective date of this Registration Statement.

     If any of the securities being registered on this Form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, check the following box. |_|

     If the  registrant  elects to deliver its latest  annual report to security
holders, or a complete and legible facsimile thereof,  pursuant to item 11(a)(1)
of this form, check the following box. |_|

     If this Form is filed to register  additional  securities  pursuant to Rule
462(b) under the  Securities  Act,  please check the  following box and list the
Securities  Act  Registration   Statement   number  of  the  earlier   effective
Registration Statement for the same offering. |_|

     If this Form is a  post-effective  amendment  filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
Registration  Statement number of the earlier effective  Registration  Statement
for the same offering. |_|

     If this form is a  post-effective  amendment  filed pursuant to Rule 462(d)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. |_|

     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box.

                                   ----------

                         Calculation of registration fee

<TABLE>
<CAPTION>
                                                              Proposed         
                                                               maximum         Proposed                         
                                            Amount to          offering         maximum             Amount of   
Title of each class of                         be              price per       aggregate           registration 
securities to be registered                registered            unit        offering price            fee      
- -----------------------------------------------------------------------------------------------------------------------
<S>                                        <C>                   <C>           <C>                   <C>   
Common stock, par value                    4,745,076             $3.73         $17,699,133           $4,921
$.002
=======================================================================================================================

Subscription rights to                     4,745,076
purchase common stock                     Subscription           $0.00               $0.00            $0.00
                                             rights
- -----------------------------------------------------------------------------------------------------------------------
TOTAL                                          __                 __           $17,699,133           $4,921(2)
</TABLE>

1.   Issuable   upon  exercise  of  rights  which  are  being   distributed   to
     shareholders of Radyne ComStream Inc.

2.   Previously paid.

- ----------------
The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further amendment which specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933  or  until  the  Registration  Statement  shall  become
effective on such date as the  Commission,  acting pursuant to Section 8(a), may
determine.

================================================================================

<PAGE>
                              Radyne ComStream Inc.
                              Cross Reference Sheet
                   (Pursuant to Item 501(b) of Regulation S-K)


<TABLE>
<CAPTION>
S-2 Item Number and Caption                                            Location or Caption in Prospectus
- ----------------------------------------------------------           --------------------------------------
<S>                                                                  <C>
1.    Forepart of the Registration Statement and                     Outside front cover page
      outside front cover page of prospectus .............


2.    Inside front and outside back cover pages of                   Inside front and outside back cover
      Prospectus .........................................           page.


3.    Summary information, risk factors and ratio of       
      earnings to fixed charges ..........................           Prospectus summary; risk factors


4.    Use of proceeds ....................................           Prospectus summary; purpose of the
                                                                     rights offering and use of proceeds


5.    Determination of offering price ....................           Purpose of the rights offering and use
                                                                     of proceeds


6.    Dilution ...........................................           Dilution


7.    Selling security holders ...........................           Not applicable


8.    Plan of distribution ...............................           Outside front cover page; the rights
                                                                     offering


9.    Description of securities to be registered
      description of capital stock .......................           Outside front cover page; the rights
                                                                     offering



10.   Interest of named experts and counsel ..............           Not applicable



11.   Information with respect to the registrant .........           Outside front cover page; prospectus
                                                                     summary; risk factors; purpose of
                                                                     rights offering and use of proceeds;
                                                                     price range of common stock; shares
                                                                     eligible for future sale; description of
                                                                     capital stock


12.   Incorporation of certain information
       by reference ......................................           Where you can find more
                                                                     information


13.   Disclosure of commission position on
      indemnification for securities act liabilities .....          Not applicable
</TABLE>





<PAGE>



                                   Prospectus
                              Radyne ComStream Inc.

                                4,745,076 shares
                   of common stock, par value $.002 per share
                                       and
                          4,745,076 subscription rights
                                   ----------




                                                    Per share           Total
================================================================================

Subscription price                                    $3.73        $17,699,133

Underlying discount                                     N/A                N/A
                                                      -----        -----------
Total proceeds to Radyne                              $3.73        $17,699,133
================================================================================

     The subscription rights

          o    Each Radyne ComStream shareholder of record on April 16, 1999
               will be entitled to purchase four shares of common stock for
               every five shares currently owned.

          o    The purchase price per share is $3.73.

          o    The subscription rights expire at 5:00 p.m. New York time on
               ___________, 1999, unless extended.

     The common stock

          o    One share is issuable upon the exercise of one subscription
               right.

          o    Voting rights for the new shares will be equal to the voting
               rights of shares currently outstanding.

     The offering

          o    You cannot revoke a decision to exercise.

          Radyne ComStream's common stock is currently traded over the counter
          and is not listed on any securities exchange or quoted on Nasdaq.

                                   ----------

The information contained in this document is subject to completion and
amendment.

You should carefully consider the risk factors on page 8 before purchasing any
of the common stock. These securities have not been approved or disapproved by
the Securities and Exchange Commission or any state securities commission, nor
has the Securities and Exchange Commission or any state securities commission
passed upon the accuracy or adequacy of this prospectus. Any representation to
the contrary is a criminal offense.

                                   ----------

                   The date of this prospectus is May __, 1999


<PAGE>



                       Where you can find more information

     Radyne ComStream Inc. is subject to the information requirements of the
Securities Exchange Act of 1934, as amended (the "Exchange Act") and files
reports and other information with the Securities and Exchange Commission. You
may read and copy any reports or other information concerning Radyne ComStream
at the SEC's public reference rooms in Washington, D.C., New York, New York and
Chicago, Illinois. You may also request copies of these documents upon payment
of a duplicating fee, by writing to the SEC's Public Reference Section. Please
call the SEC at l-800-SEC-0330 for further information on the public reference
rooms. Radyne ComStream's SEC filings are also available to the public from
commercial document retrieval services and at the web site maintained by the SEC
at "http://www.sec.gov." Information concerning Radyne ComStream is not
available from any securities exchange as our common stock is not traded on any
securities exchange.

     Radyne ComStream filed a registration statement with respect to the shares
of common stock and rights to purchase common stock we are offering. Pursuant to
SEC rules and regulations, this prospectus does not contain all of the
information that you can find in such registration statement. You may read and
copy this information in the same way as any other information that Radyne
ComStream files with the SEC.

     Statements in this document concerning any document filed as an exhibit to
the registration statement summarize all material provisions. Each of those
statements is qualified in its entirety by reference to the complete document.
For more detailed information, you should refer to the copy of the complete
document filed as an exhibit to the registration statement. These documents,
filed with the SEC, may be inspected and copied, and obtained by mail, from the
SEC as set forth above and will be available for inspection and copying at the
principal executive offices of Radyne ComStream at 3138 East Elwood Street,
Phoenix, AZ 85034 during regular business hours by any interested securityholder
of Radyne ComStream or his or her representative who has been so designated in
writing.

     The SEC allows us to "incorporate by reference" information into this
document, which means that we can disclose important information to you by
referring you to another document filed separately with the SEC, including
Radyne ComStream's annual, quarterly and current reports. The information
incorporated by reference is deemed to be part of this document, except for any
information superseded by information in this document. The information
incorporated by reference is an important part of this prospectus.

     This document incorporates by reference the documents set forth below which
Radyne ComStream previously filed with the SEC. These documents contain
important information about Radyne ComStream and its finances.




<PAGE>


     Radyne ComStream incorporates by reference into this Prospectus:

          o    its Annual Report on Form 10-K for the Fiscal Year Ended December
               31, 1998, which contains audited consolidated financial
               statements for Radyne ComStream's latest fiscal year;

          o    its report on Form 8-K/A filed on May 5, 1999, which contains
               audited financial statements of ComStream Holdings, Inc. for its
               fiscal years ended December 31, 1995, 1996 and 1997, unaudited
               financial statements of ComStream Holdings, Inc. for the nine
               months ended September 30, 1998, and pro forma financial
               information for the year ended December 31, 1997 and the nine
               months ended September 30, 1998 as if the acquisition of
               ComStream Holdings, Inc. took place effective January 1, 1997;
               and

          o    the description of Radyne ComStream's common stock, $.002 par
               value, as contained in its registration statement on Form 8-A,
               filed with the SEC on March 8, 1984, as amended on July 25, 1988.

     A copy of our Annual Report to stockholders for the year ended December 31,
1998 accompanies this prospectus. Other documents incorporated by reference may
be obtained through the SEC and are available from Radyne ComStream without
charge, other than exhibits, unless we have specifically incorporated by
reference an exhibit in this document. You may obtain documents incorporated by
reference in this document by making a request to Radyne ComStream by telephone
at (602) 437-9620 or in writing at the following address:

                  Director of Administration
                  Radyne ComStream Inc.
                  3138 East Elwood Street
                  Phoenix, AZ 85034.

     You should rely only on the information contained in this document or to
which we have referred you. We have not authorized anyone to provide you with
information that differs from such information. We are not making an offer of
these securities in any state where the offer is not permitted. You should not
assume that the information in this prospectus or any prospectus supplement is
accurate as of any date other than the date on the front of those documents.



                                        2

<PAGE>



                               Prospectus Summary

     The following summary is qualified in its entirety by reference to the more
detailed information and financial statements and notes thereto appearing
elsewhere in this prospectus.

                              Radyne ComStream Inc.

     Radyne ComStream Inc. and its subsidiaries design, manufacture and sell
equipment used to receive data from, and transmit data to, satellites. We have
engaged in the advanced design and production of digital data communications
equipment for satellite telecommunications systems for over seventeen years.

     Singapore Technologies Pte Ltd through its wholly owned subsidiary, Stetsys
Pte Ltd, and the latter's wholly owned subsidiary, Stetsys US, Inc.
(collectively, "ST"), owns approximately 91% of Radyne ComStream's common stock.

     Consistent with our new growth strategy, on October 15, 1998 we acquired
ComStream Holdings, Inc. from Spar Aerospace Limited, a Canadian company.
ComStream is an international provider of digital transmission solutions for
voice, data, audio and video applications with offices in the United States,
Singapore, Indonesia, China and the United Kingdom. We acquired ComStream in an
effort to expand our core business, supplement our product lines and take
advantage of ComStream's trademark and distribution channels, and based on our
belief that the combined companies could realize certain synergies.

               Purpose of the rights offering and use of proceeds

     We intend to raise approximately $17,700,000 in gross proceeds from the
rights offering to repay ST for the $10,000,000 of financing which it provided
in connection with the ComStream acquisition and approximately $5,618,000 in
principal amount from earlier working capital loans, plus interest. We expect to
receive approximately $16.1 million of the aggregate $17,700,000 gross proceeds
of the offering from ST upon the exercise of its rights.

     If we complete the rights offering, the maximum gross proceeds to Radyne
ComStream would be approximately $17,700,000 before payment of related fees and
expenses estimated to be $300,000. However, although ST informed us that it
intends to fully exercise its rights, no assurance can be given that any or all
of the rights received by others will be exercised. We will not reoffer shares
underlying any unexercised rights to the public or otherwise reissue them.
Therefore, the actual proceeds from the rights offering could be somewhat less.

     The subscription price has been established by the Board of Directors at
$3.73 per share, which the Board determined to be the fair market value of the
common stock based on the negotiated conversion price of the convertible note
issued to Spar in connection with the ComStream acquisition. See "Purpose of the
Rights Offering and Use of Proceeds."



                                        3

<PAGE>




                         Summary of the rights offering




The rights ..........................   Radyne ComStream. will issue to you four
                                        rights for every five shares of common
                                        stock that you held on the record date
                                        [,unless you are a resident of
                                        California.] We will distribute an
                                        aggregate of approximately 4,745,076
                                        rights. Holders of the rights are
                                        entitled to purchase one share of common
                                        stock for each right exercised at the
                                        subscription price. We will not issue
                                        any fractional rights. Each right will
                                        entitle a shareholder to purchase one
                                        share of common stock at $3.73 per
                                        share.


Subscription price ..................   $3.73 per share of common stock.


Record date .........................   April 16, 1999

Transferability of shareholder
rights ..............................   The rights will be transferable, but we
                                        do not anticipate that there will be a
                                        market in the rights or that they will
                                        be listed for trading on any exchange.
                                        [Because we cannot accept subscriptions
                                        from residents of California, no
                                        shareholder may transfer rights to
                                        residents of such state.]

Expiration date .....................   5:00 p.m., New York time, on __________,
                                        1999 unless the Board of Directors
                                        determines that a material event has
                                        occurred that necessitates one or more
                                        extensions of the expiration date to
                                        permit adequate disclosure of
                                        information concerning such event.




                                        4

<PAGE>


Procedure for
 exercising rights ..................   You may exercise rights by properly
                                        completing the subscription certificate
                                        evidencing your rights and forwarding
                                        the subscription certificate to the
                                        subscription agent or Radyne ComStream
                                        on or prior to the expiration date,
                                        together with payment in full of the
                                        subscription price with respect to your
                                        rights. In the alternative, you may use
                                        the guaranteed delivery procedures
                                        described below. If you use the mail to
                                        forward subscription certificates, we
                                        recommended that you use insured,
                                        registered mail. If time does not permit
                                        a holder of a right to deliver a
                                        subscription certificate to the
                                        subscription agent or Radyne ComStream
                                        on or before the expiration date, such
                                        person should make use of the guaranteed
                                        delivery procedures described under
                                        "Purpose of the Rights Offering and Use
                                        of Proceeds-Exercise of rights."

                                        The exercise of rights is irrevocable
                                        once made. Radyne ComStream will not pay
                                        interest on the money delivered in
                                        payment of the subscription price. If
                                        paying by uncertified personal check,
                                        please note that the funds paid thereby
                                        may take at least five business days to
                                        clear. Accordingly, we urge persons who
                                        wish to pay the subscription price by
                                        means of uncertified personal check to
                                        make payment sufficiently in advance of
                                        the expiration date to ensure that such
                                        payment reaches the subscription agent
                                        or Radyne ComStream and clears by such
                                        date. We urge you to consider payment by
                                        means of certified or cashier's check or
                                        money order. You may not exercise a
                                        right in part, and Radyne ComStream will
                                        not issue any fractional shares.

Persons holding shares, or
wishing to exercise rights,
through others ......................   Persons who hold their Radyne ComStream
                                        Inc. shares and rights with a broker,
                                        dealer, commercial bank, trust company
                                        or other nominee should contact the
                                        appropriate institution or nominee and
                                        request it to effect the transactions
                                        for them.


                                        5

<PAGE>


Issuance of common stock ............   Radyne ComStream will cause the delivery
                                        of certificates representing shares of
                                        common stock issuable upon exercise of
                                        rights to the holder of such rights as
                                        soon as practicable after valid exercise
                                        of such rights. The subscription agent
                                        will hold funds received thereby until
                                        the issuance of the related shares.

Subscription agent ..................   Continental Stock Transfer & Trust
                                        Company

Information .........................   Please direct any questions regarding
                                        this offering, including the procedure
                                        for exercising rights, and requests for
                                        additional copies of this prospectus,
                                        the subscription certificate or the
                                        notice of guaranteed delivery to Radyne
                                        ComStream Inc. at 3138 East Elwood
                                        Street, Phoenix, Arizona 85034,
                                        Attention: Director of Administration.
                                        Telephone: (602) 437-9620.

Maximum Shares of common
stock outstanding after the
rights offering .....................   10,679,416 shares based on 5,934,340
                                        shares outstanding on April 16, 1999.
                                        Does not give effect to the issuance of
                                        2,068,942 shares reserved for issuance
                                        upon the exercise of options previously
                                        granted or available for grant from time
                                        to time under the 1996 Incentive Stock
                                        Option Plan or the possible conversion
                                        of an outstanding convertible note into
                                        an additional 1,876,675 shares.

     For more information  regarding this offering,  including the procedure for
exercising rights, see "The Rights Offering."


                                        6

<PAGE>



                         Federal income tax consequences

     The holders of common stock will not recognize taxable income for federal
income tax purposes upon receipt of the rights and holders of the rights will
not recognize any gain or loss upon exercise of the rights. See "Federal Income
Tax Consequences" for a discussion of tax consequences that should be considered
in connection with this offering.

                                  Risk factors

     The purchase of common stock in the rights offering or the purchase of
rights in the secondary market involves investment risks relating to Radyne
ComStream, to the satellite data communications equipment industry in general
and to this offering. Investors should read and consider carefully the
information set forth under the heading "Risk Factors".

                               Exercise of rights

     The Board of Directors of Radyne ComStream makes no recommendation to
holders as to whether a holder should exercise rights to purchase shares of
common stock in the rights offering. In addition, the Board makes no
recommendation as to whether you should purchase rights.




                                        7

<PAGE>



                                  Risk Factors

     An investment in the common stock or rights is highly speculative and
involves a high degree of risk. You should invest in these securities only if
you can afford the loss of your entire investment. Prior to making an investment
decision, you should carefully consider, together with the other matters
referred to in this prospectus, or incorporated by reference, the following risk
factors.

History of losses may continue

     Radyne ComStream incurred losses from operations of $12,952,000 during the
year ended December 31, 1998, $1,080,000 during the year ended December 31,
1997, $1,814,000 during the six months ended December 31, 1996 and $2,368,000
during the twelve months ended June 30, 1996. The Company's predecessor, Radyne
Corp., had emerged from Chapter 11 protection in December 1994. Radyne ComStream
has been largely dependent upon loans from controlling shareholders to satisfy
its working capital requirements. Accordingly, one must consider the likelihood
of Radyne ComStream's future success in light of Radyne Corp.'s bankruptcy in
1994 and the possibility of future operating losses, as well as the problems,
expenses, difficulties, risks and complications frequently encountered in
connection with similarly situated companies. In addition, our future plans for
Radyne ComStream are subject to known and unknown risks and uncertainties that
may cause Radyne ComStream's actual results in future periods to differ
materially from any future performance implied in this Prospectus or in our
Annual Report.

Significant level of debt requires large amount of resources

     Radyne ComStream has been largely dependent on a succession of short-term
loans and guarantees from its controlling shareholder, ST, and affiliates of ST
since it emerged from Chapter 11 protection on December 16, 1994. Prior to its
acquisition by us, ComStream had been dependent on borrowings facilitated by
Spar. At present, Radyne ComStream has short-term indebtedness to ST of
$15,618,272, plus interest, payable on March 31, 2000, and has a $20,500,000
bank line of credit on which it owes approximately $8,000,000. In addition,
Radyne ComStream owes Spar $7,000,000 in connection with the ComStream
acquisition. We will use the proceeds from this offering to repay the loans from
ST. Although Radyne ComStream's indebtedness to the bank or Spar is not
supported by a guarantee or any other form of binding agreement, ST has provided
the bank with a letter of awareness. All loans pursuant to the bank line of
credit are demand loans. The bank could demand repayment at an inopportune time
for Radyne ComStream and ST may not continue indefinitely to assist Radyne
ComStream in maintaining such financing. Moreover the bank recently waived
temporarily a covenant requiring Radyne ComStream to limit its indebtedness to
twice its tangible net worth. Failure to realize substantially the anticipated
net proceeds of this offering, could materially adversely affect Radyne
ComStream's ability to repay its overall indebtedness, including its
indebtedness to ST, and its financial condition. See "Purpose of the Rights
Offering and Use of Proceeds."


                                        8

<PAGE>



Necessary additional financing may not be available

     Based on our operating plan, we believe that in addition to the net
proceeds of this offering, Radyne ComStream will require substantial additional
financing in the next year. Specifically, we will need to repay the $7,000,000
note issued to Spar in connection with the ComStream acquisition. Accordingly,
there can be no assurance that our resources will be sufficient to satisfy our
capital requirements for such period. In addition to repaying debt, we
anticipate that we may require additional financing in order to meet our current
plans for expansion. Such financing may take the form of the issuance of common
or preferred equity securities or debt securities, or may involve additional
bank financing. We may be unable to obtain such additional capital on a timely
basis, on favorable terms, or at all.

Heavy dependence on  international  sales;  substantial  disruptions in overseas
markets

     Radyne ComStream has dedicated substantial resources to penetrating markets
in Europe, the Middle East, Canada, Latin America and Asia. While this activity
fits with Radyne ComStream's long-term strategy, recent market volatility in
Latin America and Asia may cause short-term problems which may have longer term
negative effects. Export sales, as a percentage of net sales, were approximately
50% for the year ended December 31, 1998. As a result, the possibility of
substantial future disruptions and the impact of events to date could have a
material adverse effect on our business, financial condition and results of
operations.

Dependence on key personnel and recruitment

     Our future performance is significantly dependent on the continued active
participation of Robert C. Fitting, President and Chief Executive Officer, and
Steve Eymann, Executive Vice President and Chief Technical Officer. Should
either of these key employees leave or otherwise become unavailable to us,
Radyne ComStream's business and results of operations could suffer. Our
continued ability to attract and retain highly skilled personnel is critical to
the operations and expansion of Radyne ComStream. To date, we have been able to
attract and retain the personnel necessary for our operations. However, we may
not be able to do so in the future, particularly as we expand the business. Any
inability to attract and retain personnel with the necessary skills when needed
could materially adversely affect our business and expansion plans.

Risk of obsolescence of our products from rapid technological change

     The technology used in modems, converters and related equipment changes
rapidly. Radyne ComStream's competitors may succeed in developing or marketing
products or technologies that are more effective and/or less costly and which
render our products obsolete or non-competitive. In addition, new technologies
could emerge that replace or reduce the value of our products. For example, as
more fiber cables come into service, the use of satellites for international
telephony is slowing. Our success will depend in part on our ability to respond
quickly to technological changes through the development and improvement of our
products.

                                        9

<PAGE>



     Accordingly, we believe that we will need to allocate a substantial amount
of capital to research and development activities in the future. There can be no
assurance that Radyne ComStream's product development efforts will be
successful. Failure to improve our existing products and develop new products
could have a material adverse effect on our business, financial condition and
results of operations.

High cost of research and development

     ComStream's future growth depends on increasing the market share for its
new products, adapting existing satellite communications products to new
applications and introducing new communications products that will find market
acceptance and benefit from Radyne ComStream's established international
distribution channels. Accordingly, we are actively applying our communications
expertise to design and develop new hardware and software products and enhance
existing products. We expended $4,296,000 in the year ended December 31, 1998,
on research and development activities. However, Radyne ComStream may not
continue to have access to sufficient capital to fund the necessary research and
development and such efforts, even if adequately funded, may not prove
successful.

Competition in our industry is stringent

     We have a number of major competitors in the satellite communications
field. These include large companies, such as Hughes Network Systems, NEC and
California Microwave which have significantly larger and more diversified
operations and greater financial, marketing, human and other resources than
Radyne ComStream. We believe that we have been able to compete by concentrating
our sales efforts in the international market and by emphasizing product
features and quality. However, most of our competitors offer products which have
one or more features or functions similar to those offered by Radyne ComStream.
We believe that the quality, performance and capabilities of our products, our
ability to customize certain network functions and the relatively lower overall
cost of our products, as compared to the costs generally offered by Radyne
ComStream's major competitors, have contributed to Radyne ComStream's ability to
compete successfully. However, our major competitors have the resources
available to develop products with features and functions competitive with or
superior to those offered by us. Such competitors may successfully develop such
products, which may prevent us from maintaining a lower cost advantage for our
products. Moreover, we may experience increased competition in the future from
these, other currently unknown competitors or future entrants to the business.

Our products could infringe on other's technology or vice versa

     Because patents often provide only narrow protection which may not provide
a competitive advantage in areas of rapid technological change and because
patent applications require public disclosure of information which may otherwise
be subject to trade secret protection, Radyne ComStream has been cautious in
obtaining patents on existing products. We have a number of patents, copyrights
and other intellectual property rights in the form of software

                                       10

<PAGE>



     and integrated circuit designs. However, our technology could be found to
infringe upon the intellectual property of others. If our technology should be
found to impermissibly utilize the intellectual property of others, Radyne could
experience material restrictions or prohibitions on the use of the technology.
In such event, we might need to obtain licenses from third parties to utilize
the patents or proprietary rights of others. We might be unable to obtain such
licenses on acceptable terms or at all. In addition, in such event, we could
incur substantial costs in defending against infringement claims made by third
parties or in enforcing our own intellectual property rights. It should also be
noted that some foreign countries in which Radyne ComStream's products are sold
provide less protection to intellectual property than do the laws of the United
States. Any misappropriation of Radyne ComStream's products could adversely
affect our business.

Difficulty of integrating a new corporate entity

     In pursuit of our business strategy, we recently acquired ComStream. The
successful integration of ComStream is subject to risks commonly encountered in
making acquisitions of companies or their services and technologies. Such risks
include, among other things:

          o    the difficulty associated with assimilating the operations and
               personnel of ComStream

          o    the potential disruption of our ongoing business,

          o    the inability of management to maximize our financial and
               strategic position through the successful integration of acquired
               customers, network facilities, technology and distribution
               networks,

          o    additional expenses associated with the amortization of acquired
               intangible assets,

          o    the inability to maintain uniform standards, controls, procedures
               and policies, and

          o    the impairment of relationships with employees as a result of the
               integration of new management personnel.

Control by principal stockholder

     Upon the closing of this offering, ST, which currently owns approximately
91% of Radyne ComStream's outstanding common stock, will continue to maintain a
substantially similar level of control. ST will, therefore, continue to have the
ability to elect all of Radyne ComStream's directors and to control the outcome
of all issues submitted to a vote of Radyne ComStream's stockholders. As a
result of ST's substantial ownership interest in the common stock, it may be
more difficult for a third party to acquire Radyne ComStream. A potential buyer
would likely be deterred from any effort to acquire Radyne ComStream absent the
consent of ST or its participation in the transaction.


                                       11

<PAGE>



     We are subject to Section 912 of the New York Business Corporation Law,
which restricts certain business combinations that are not approved by a
corporation's board of directors.

Immediate and substantial dilution; net tangible book value deficiency before
offering

     Upon the closing of this offering, investors will incur immediate and
substantial dilution in the per share net tangible book value of their common
stock. At December 31, 1998, after giving effect to the receipt by Radyne
ComStream of the maximum net proceeds of the rights offering, Radyne ComStream,
would have had a pro forma net tangible book value (deficit) of approximately
[$0.24] per share. Net tangible book value is the amount of Radyne ComStream's
total assets minus intangible assets and liabilities. See "Dilution."

     To the extent that other shareholders exercise their rights, those
shareholders who do not exercise their rights in full will realize a dilution in
their percentage voting interest and ownership interest in future net earnings,
if any, of Radyne ComStream. Radyne ComStream cannot predict the effect, if any,
this offering will have on the market price of the common stock.

     Radyne ComStream currently has outstanding under the 1996 Incentive Stock
Option Plan options exercisable to purchase an aggregate of 763,457 shares of
common stock at an exercise price of $2.50 per share (in the case of 654,957 of
such options, the optionee/employee would be entitled to a bonus of $1.72 per
share upon exercise), 85,250 shares at $3.125 per share and 158,625 shares at
$3.75 per share. Options on an additional 830,125 shares will become exercisable
at between $2.50 and $3.75 per share over the next three years, assuming that
the grantees' employment does not terminate prematurely. An additional 231,485
shares are available for options yet to be granted under the Plan. Exercise of
the options granted under the 1996 Incentive Stock Option Plan would further
reduce a shareholder's percentage voting and ownership interest.

Shares eligible for future sale

     The sale, or availability for sale, of a substantial number of shares of
common stock in the public market subsequent to this offering pursuant to Rule
144 under the Securities Act ("Rule 144") or otherwise could materially
adversely affect the market price of the common stock and could impair Radyne
ComStream's ability to raise additional capital through the sale of its equity
securities or debt financing. Upon completion of this offering, if all rights
are fully exercised, there would be approximately 10,679,416 shares of common
stock issued and outstanding. Of these shares, Radyne ComStream believes that
approximately 1,002,616 would be freely transferable. The remaining 9,676,800
shares would be held by ST and would be eligible for resale subject to the
volume and manner of sale limitations of Rule 144 under the Securities Act.




                                       12

<PAGE>



Disclosures relating to low priced stocks may negatively affect liquidity

     Radyne ComStream's securities are subject to Rule 15g-9 under the Exchange
Act which imposes additional sales practice requirements for broker-dealers
which sell penny stocks to persons other than established customers and
accredited investors as defined in Regulation D under the Securities Act. For
transactions covered by this rule, a broker-dealer must make a special
suitability determination for the purchaser and have received the purchaser's
written consent to the transaction prior to sale.

     The SEC regulations define a "penny stock" to be any equity security not
registered on a national securities exchange or for which quotation information
is disseminated on Nasdaq that has a market price (as therein defined) of less
than $5.00 per share or an exercise price of less than $5.00 per share, subject
to certain exceptions. Unless exempt, the rules require delivery, prior to a
transaction in a penny stock, of a disclosure schedule prescribed by the SEC
relating to the penny stock market. There are disclosure requirements relating
to commissions payable to both the broker-dealer and the registered
representative and current quotations for the securities. Finally, there is a
requirement for monthly statements disclosing recent price information for the
penny stock held in the account and information on the limited market in penny
stocks. Consequently, such rule may adversely affect the ability of
broker-dealers to sell Radyne ComStream's securities and may adversely affect
the ability of purchasers in this offering to sell any of the securities
acquired hereby in the secondary market.

Market considerations; volatility of stock price

     Radyne ComStream cannot predict the effect that this offering will have on
the trading price of the common stock. There can be no assurance that the market
price of the common stock will not fall [remain] below the subscription price or
that, following the exercise of rights, a rights holder will be able to sell
shares acquired in this offering at a price equal to or greater than the
subscription price. Since Radyne ComStream emerged from bankruptcy, the price of
the common stock, which trades in the over-the-counter market under the OTC
Bulletin Board symbol "RADN", has varied widely and the price of the common
stock or the shareholder rights may be subject to significant fluctuation in the
future. There has been no prior market for the rights.

Risk of business interruption or losses from Year 2000 computer malfunctions

     The Year 2000 issue concerns the fact that certain computer systems and
processors may recognize the designation "00" as the year 1900 when it is
intended to mean the Year 2000, resulting in system failure or miscalculations.
Other potential date related errors may result from computer systems' inability
to recognize the year 2000 as a "leap year", and such dates as 9 September 1999
(9-9-99), 1 January 2001 (1-1-01) may cause errors. All of these "date related
issues" are commonly referred to as the "Year 2000" issue or "Y2K problem".
Commencing in 1997, we began a comprehensive review of our information
technology systems, upon which our day to day business operations depend, in
order to determine the adequacy of those systems in light of future business
requirements. Year 2000 readiness was one of the factors considered in

                                       13

<PAGE>



the review process. We have completed that review and determined that all
mission critical systems at our Phoenix facility are Year 2000 compliant,
whereas certain systems used at our San Diego facility require upgrading. We
purchased and expensed the upgrades in 1998 and expect their installation to be
completed in the third quarter of this year.

     Our Year 2000 readiness plan also involves the review of our
non-information technology systems, a review which we consider to be
approximately 60% complete. The only noncompliance which we have discovered to
date relates to certain date functions in diagnostic equipment, which functions
we do not employ. We have no expectation of encountering any more serious Y2K
noncompliance during the remainder of our review. However, it is possible that
the scope of the Year 2000 problem could be greater than originally believed and
that our efforts could prove inadequate.

     As part of our comprehensive review, we are continuing to verify the Year
2000 readiness of third parties (vendors and customers) with whom Radyne
ComStream has material relationships. This is a particular concern in light of
our reliance on overseas assembly operations. A Year 2000 readiness survey was
recently sent to all of our material vendors and customers. We have received
approximately 60% of the survey responses and have established a deadline of
April 30, 1999 for the remainder. We have also created a data base to track
responses, problems and follow-up plans. Our Y2K plan contemplates that we will
consider replacement of any critical vendor that does not satisfy us by June 30,
1999 that it will be Y2K compliant by September 30, 1999. While our assessments
of the readiness of our vendors are necessarily dependent upon their survey
responses, we intend to test their stated compliance where we determine that to
be a necessary and feasible step.

     In evaluating the potential impact of vendor Y2K noncompliance, we believe
that the two worst case scenarios would likely be as follows. First, if the
electric utility at either of our principal facilities were to black out,
operations at that facility could essentially cease for the duration of the
problem. At this point those utilities have provided reasonable assurances of
their own Y2K compliance, although they are not in a position to rule out
potentially relevant problems elsewhere on the power grid. Second, if one of our
major circuit board suppliers were to report Y2K compliance, but then surprise
us with a shut-down, our delivery schedule would be adversely affected. However,
since our contingency plan includes maintenance of a three-month inventory of
critical parts, we would expect to be able to replace the noncompliant vendor
timely enough to avoid a product delivery delay of more than 30 days. However,
we are not able to precisely determine the effect on results of operations,
liquidity and financial condition in the event our material vendors and
customers are not Year 2000 compliant. Our inability to accurately forecast such
effects may prevent Radyne ComStream from taking necessary steps to rectify any
Year 2000 problems in advance. Moreover it is impossible to predict the extent,
if any, to which customers may allocate funds to the solution of their own Year
2000 problems instead of purchasing our products. We will continue to monitor
the progress of our material vendors and customers and formulate a contingency
plan if and when we conclude that a material vendor or customer may not be
compliant.


                                       14

<PAGE>




     We have completed a review of our products and determined that all but one
older ComStream product are Year 2000 ready. We are notifying purchasers and
potential purchasers of this product, relatively few of which have been sold,
and we are working on a Year 2000 revision which, if successful, we can make
available to any customers who require that this product be Y2K compliant. We do
not anticipate that this will involve a material expense to Radyne ComStream.

     While we believe our efforts to date are adequate to prevent any Year 2000
problem from having a material adverse effect on Radyne ComStream, our
assessment may turn out to be inaccurate.

               Purpose of the Rights Offering and Use of Proceeds

Establishment of subscription price

     The Board of Directors independently established the subscription price at
$3.73 per share, which the Board determined to be the fair market value of the
common stock at the time of its determination to conduct the rights offering.
The Board made this determination based on the conversion price fixed in the
convertible note issued to Spar in connection with the ComStream acquisition.
Through arms length negotiations, the parties set this price at fifty cents
below the average trading price of the common stock for the five trading days
following the announcement of the ComStream acquisition and this offering.

Use of proceeds

     The maximum net proceeds we will receive from the sale of the rights, net
of estimated expenses payable by Radyne ComStream, are estimated to be
approximately $17,400,000. We intend to use substantially all of the net
proceeds of this offering to repay indebtedness to ST.

     The indebtedness to ST which we intend to repay with the proceeds of this
offering equals $15,618,272 in principal amount, with interest and maturities as
follows:



 Date of Note           Principal        Interest Rate            Maturity
                                                   
January 5, 1998       $   500,000.00       6.84375%            March 31, 2000

January 5, 1998       $ 4,618,271.87       6.84375%            March 31, 2000

April 14, 1998        $   250,000.00       6.625%              March 31, 2000

August 13, 1998       $   250,000.00       6.75%               March 31, 2000

August 28, 1998       $10,000,000.00       6.375%              March 31, 2000


                                       15

<PAGE>



     Of this indebtedness, $10,000,000 was borrowed for the ComStream
acquisition and the balance was incurred for short-term working capital purposes
or to repay other indebtedness incurred for such purposes.


                                       16

<PAGE>



                                    Dilution

     The net tangible book value (deficit) of Radyne ComStream at December 31,
1998, was approximately $(19,910,000), or $(3.36) per share of common stock. Net
tangible book value per share of common stock represents the tangible assets
(total assets less intangible assets) less total liabilities, divided by the
number of shares of common stock outstanding. After giving effect to the sale of
the rights and the common stock issuable pursuant to the rights, and the
application of the net proceeds from such transactions, the net tangible book
value (deficit) of the common stock at December 31, 1998 on a pro forma basis
would have been approximately $(2,510,000) or $(0.24) per share. This represents
an immediate increase in net tangible book value of $3.12 per share to existing
shareholders and an immediate dilution to purchasers of common stock through the
exercise of rights of $3.97 (106%) per share.

<TABLE>
<CAPTION>
                                                                                      Per share
                                                                               ------------------------
<S>                                                                             <C>            <C>    
Rights offering price                                                                          $  3.73

Net tangible book value (deficit) at December 31, 1998                          $(3.36)

Increase attributable to sale of common stock pursuant to rights                $ 3.12


Pro forma net tangible book value after this offering(1)                                       $(0.24)
                                                                                               ------ 

Dilution to new investors                                                                      $  3.97
                                                                                               =======
</TABLE>

(1)  After deducting  offering  expenses of  approximately  $300,000  payable by
     Radyne ComStream.

     The foregoing computations exclude (i) 861,957 shares of common stock
issuable upon exercise of outstanding stock options at an exercise price of
$2.50 per share, another 341,000 shares under options with an exercise price of
$3.125 per share and another 634,500 shares under options with an exercise price
of $3.75 per share, as well as (ii) 231,485 shares reserved for future grants
under Radyne ComStream's 1996 Incentive Stock Option Plan.

                               The Rights Offering

Subscription rights

     Shareholders, [other than residents of California,] will receive four
rights for every five shares of common stock held on the record date, an
aggregate of approximately 4,745,076 rights. Holders are entitled to purchase at
the subscription price one share of common stock for each right held. The rights
will expire on the expiration date. The rights will be transferable. Radyne
ComStream will not issue any fractional rights.




                                       17

<PAGE>



Expiration date

     The rights will expire at 5:00 p.m., New York time, on ____, 1999, except
that Radyne ComStream reserves the right to extend the exercise period on one or
more occasions if the Board of Directors determines that the occurrence of a
material event necessitates an amendment of the Registration Statement or
recirculation of this Prospectus in order to permit time for the distribution of
such information. After the expiration date, unexercised rights will be null and
void. Radyne ComStream will not be obligated to honor any purported exercise of
such rights received by the subscription agent or Radyne ComStream after the
expiration date, regardless of when the documents relating to such exercise were
sent, except pursuant to the guaranteed delivery procedures described below.

     If Radyne ComStream elects to extend the expiration date, it will issue a
press release to such effect not later than the first business day following the
most recently announced expiration date. In the event that Radyne ComStream
elects to extend the expiration date by more than 14 calendar days, it will, in
addition, cause written notice of such extension to be promptly sent to all
rights holders of record.

Exercise of rights

     You may exercise rights by delivering to the subscription agent or Radyne
ComStream at or prior to 5:00 p.m., New York time, on the expiration date:

     o    the properly completed and executed subscription certificate
          evidencing such rights with any required signatures guaranteed, and

     o    payment in full of the subscription price for each right exercised.

     Such payment in full must be by check drawn upon a U.S. bank or postal,
telegraphic or express money order payable to Continental Stock Transfer & Trust
Company, as subscription agent; provided, however, that checks or money orders
sent directly to Radyne ComStream should be made payable to Radyne ComStream
Inc. Payment of the subscription price will be deemed to have been received by
the subscription agent or Radyne ComStream, as the case may be, only upon

     o    clearance of any uncertified check, or

     o    receipt by the subscription agent or Radyne ComStream, as the case may
          be, of any certified check drawn upon a United States bank or of any
          postal, telegraphic or express money order.

     If paying by uncertified personal check, please note that such funds may
take at least five business days to clear. Accordingly, holders of rights who
wish to pay the subscription price by

                                       18

<PAGE>



means of uncertified personal check should make payment sufficiently in advance
of the expiration date to ensure that such payment is received and clears by
such date and should consider payment by means of certified or cashier's check
or money order.

     The address to which the subscription certificates and payment of the
subscription price with respect to rights should be delivered to the
subscription agent is set forth below under "Subscription agent."

     If a holder of rights wishes to exercise rights, but cannot deliver the
subscription certificate(s) to the subscription agent or Radyne ComStream prior
to the expiration date, such rights may nevertheless be exercised if all of the
following conditions (the "Guaranteed Delivery Procedures") are met:

     o    the subscription agent receives payment in full of the subscription
          price for each rights share being subscribed for (in the manner set
          forth above) on or prior to the expiration date;

     o    the subscription agent receives, on or prior to the expiration date, a
          Notice of Guaranteed Delivery from a member firm of a registered
          national securities exchange or a member of the National Association
          of Securities Dealers, Inc., or from a commercial bank or trust
          company having an office or correspondent in the United States (each,
          an "Eligible Institution"), substantially in the form available upon
          request from the subscription agent whose address and telephone
          numbers are set forth under "Subscription agent" below. The Notice of
          Guaranteed Delivery must provide:

          o    the name of the exercising holder of rights,

          o    the   number   of   rights   represented   by  the   subscription
               certificate(s) held by such exercising holder of rights,

          o    the number of shares of common stock being subscribed for, and

          o    a guarantee of the delivery to the subscription agent of any
               subscription certificate(s) evidencing such rights within three
               business days following the date of the Notice of Guaranteed
               Delivery; and

          o    the subscription agent receives the properly completed
               subscription certificate(s), with any required signatures
               guaranteed, within three business days following the date of the
               Notice of Guaranteed Delivery relating thereto. The Notice of
               Guaranteed Delivery may be delivered to the subscription agent in
               the same manner as subscription certificates at the address set
               forth under "Subscription

                                       19

<PAGE>



               agent" below, or may be transmitted to the subscription agent by
               facsimile transmission (telecopy no. (212) 616-7610).

     A holder of rights who holds shares of common stock for the account of
others, such as a broker, a trustee or a depository for securities, should
notify the respective beneficial owners of such shares as soon as possible to
ascertain such beneficial owners' intentions and to obtain instructions with
respect to the rights. If the beneficial owner so instructs, the record holder
of such rights should complete the subscription certificate and submit it to the
subscription agent with the proper payment. In addition, the beneficial owner of
common stock or rights held through such a holder of record should contact the
rights holder and request the rights holder to effect transactions in accordance
with the beneficial owner's instructions.

     Signatures on the subscription certificate must be guaranteed by an
Eligible Institution, unless the subscription certificate:

     o    provides that the shares of common stock to be issued pursuant to the
          exercise of rights represented thereby are to be delivered to the
          holder, or

     o    is submitted for the account of an Eligible Institution.

     If the subscription certificate does not specify the number of shares of
common stock being subscribed for, or the funds delivered are not enough to pay
the subscription price for the number of shares specified, we will assume that
the number of shares of common stock subscribed for is the maximum number that
could be purchased with such funds.

     These instructions should be read carefully and followed in detail.

     The method of delivery of subscription certificates and payment of the
subscription price to the subscription agent or Radyne ComStream will be at the
election and risk of the rights holder. If sent by mail, it is recommended that
such certificates and payments be sent by registered mail, properly insured,
with return receipt requested, with a sufficient number of days allowed to
ensure delivery to the subscription agent or Radyne ComStream and clearance of
payment prior to 5:00 p.m., New York time, on the expiration date. Because
uncertified personal checks may take at least five business days to clear,
rights holders should pay, or arrange for payment, by means of certified or
cashier's check or money order.

     [Because the cost of qualifying the common stock for sale in the State of
California would have been disproportionately high as compared to the expected
proceeds of such sales, the common stock has not been so qualified. Accordingly
subscriptions cannot be accepted from residents of California.]

     We will determine all questions concerning the timeliness, validity, form
and eligibility of any exercise of rights, and our determinations will be final
and binding. Radyne ComStream, in its reasonable discretion, may waive any
defect or irregularity, or permit a defect or

                                       20

<PAGE>



irregularity to be corrected within such time as it may determine, or reject the
purported exercise of any right. Subscriptions will not be deemed to have been
received or accepted until all irregularities have been waived or cured within
such time as Radyne ComStream determines. Neither Radyne ComStream nor the
subscription agent will be under any duty to give notification of any defect or
irregularity in connection with the submission of subscription certificates or
incur any liability for failure to give such notification.

     Please direct any questions or requests for assistance concerning the
method of exercising rights or requests for additional copies of this prospectus
or the Notice of Guaranteed Delivery to Radyne ComStream at 3138 East Elwood
Street, Phoenix, Arizona 85034, Attention: Director of Administration,
telephone: (602) 437-9620.

No revocation

     Once a holder of rights has exercised those rights, such exercise may not
be revoked.

Fractional shares

     Radyne ComStream will not distribute fractional rights, and a holder may
not exercise a right in part.

Method of transferring rights

     You may transfer all rights evidenced by a single subscription certificate
by endorsing the subscription certificate for transfer in accordance with the
accompanying instructions. You may transfer a portion of the rights evidenced by
a single subscription certificate (but only in units to purchase whole shares)
by delivering to the subscription agent a subscription certificate properly
endorsed for transfer, with instructions to register such portion of the rights
in the name of the transferee (and to issue a new subscription certificate to
the transferee evidencing such transferred rights). In such event, we will issue
a new subscription certificate evidencing the balance of the rights to the
holder of the rights or, if the holder of the rights so instructs, to an
additional transferee.

     Holders of rights wishing to transfer all or a portion of their rights (but
only in units to purchase whole shares) should allow a sufficient amount of time
prior to the expiration date for:

     o    the transfer instructions to be received and processed by the
          subscription agent,

     o    a new subscription certificate to be issued and transmitted to the
          transferee or transferees with respect to transferred rights, and to
          the transferor with respect to retained rights, if any, and


                                       21

<PAGE>



     o    the rights evidenced by such new subscription certificates to be
          exercised or sold by the recipients of such rights.

     If time does not permit a transferee of a right who wishes to exercise its
right to deliver its subscription certificate to the subscription agent on or
before the expiration date, such transferee should make use of the Guaranteed
Delivery Procedure described under "Exercise of rights" above. Neither Radyne
ComStream nor the subscription agent shall have any liability to a transferee or
transferor of rights if subscription certificates or new subscription
certificates are not received in time for exercise or sale prior to the
expiration date.

     Radyne ComStream does not anticipate that a market will be made in the
rights or that they will trade on any exchange. There is no assurance that any
market will develop for the rights. In any event, trading in the rights will
cease at the close of business on the business day preceding the expiration
date. [Because subscriptions cannot be accepted from residents of California,
rights may not be transferred to such residents.]

Fees and expenses

     Except for the fees charged by the subscription agent (which Radyne
ComStream will pay as described below), all commissions, fees and other expenses
(including brokerage commissions and transfer taxes) incurred in connection with
the purchase or sale of rights will be for the account of the transferor of the
rights, and neither Radyne ComStream nor the subscription agent will pay any of
such commissions, fees or expenses.

     All fees and other expenses incurred in connection with the exercise of
rights will be for the account of the holder of such rights, neither Radyne
ComStream nor the subscription agent will pay any of such fees or expenses.

Subscription agent

     Radyne ComStream has appointed Continental Stock Transfer & Trust Company
as subscription agent for this offering. The subscription agent's address, which
is its address to which the subscription certificates and payment of the
subscription price must be delivered, as well as the address to which any Notice
of Guaranteed Delivery must be delivered, is:

                  Continental Stock Transfer & Trust Company
                  2 Broadway
                  New York, New York 10004
                  (212) 509-4000

     The subscription agent will hold subscription price payments pending the
application or return of such payments in accordance with the terms of this
offering.


                                       22

<PAGE>




     Radyne ComStream will pay the subscription agent reasonable and customary
compensation for its services in connection with this offering and will
reimburse it for its reasonable out-of-pocket expenses.

     The Board of Directors of Radyne ComStream makes no recommendation to
holders of rights with respect to whether a holder of rights should exercise
rights to purchase shares of common stock or to investors with respect to
whether an investor should purchase shares of common stock, or to persons with
respect to whether a person should purchase rights.

                         Federal Income Tax Consequences

     In the opinion of Dorsey & Whitney LLP, counsel to Radyne ComStream, the
following are the material federal income tax consequences of the rights
offering to the holders of the rights (other than certain holders of the rights
described in the following paragraph) upon the issuance, exercise, transfer and
lapse of the rights.

     The following is based on the Internal Revenue Code of 1986, as amended,
the Treasury Regulations promulgated thereunder, judicial authority and current
administrative rulings and practice, all of which are subject to change on a
prospective or retroactive basis, and on the accuracy of certain representations
of Radyne ComStream. The tax consequences of this offering under state, local
and foreign law are not discussed. Moreover, special considerations not
described herein may apply to certain taxpayers, such as financial institutions,
broker-dealers, life insurance companies, regulated investment companies,
foreign entities, individuals who are not citizens or residents of the United
States for federal income tax purposes, tax-exempt organizations or accounts and
corporations affiliated with Radyne ComStream. The following is limited to those
who have held the common stock, and will hold the rights and any common stock
acquired upon the exercise of rights as capital assets (generally, property held
for investment) within the meaning of Section 1221 of the Internal Revenue Code.

     Issuance of the rights. Holders of common stock will not recognize taxable
income for federal income tax purposes in connection with the receipt of the
rights.

     Basis and holding period of the rights. Except as described below, the
basis of the rights received by a shareholder as a distribution with respect to
such shareholder's common stock will be zero. If either:

     o    the fair market value of the rights on the date of distribution is
          equal to 15% or more of the fair market value on such date of the
          common stock with respect to which the rights are received, or

     o    the shareholder properly elects, in the shareholder's federal income
          tax return for the taxable year in which the rights are received, to
          allocate part of the basis of such common stock to the rights,



                                       23

<PAGE>


          then upon exercise or transfer of the rights, the shareholder's basis
          in such common stock will be allocated between the common stock and
          the rights exercised or transferred in proportion to the fair market
          values of each on the date of distribution. For example, a holder of
          100 shares of common stock would receive rights to purchase 80 shares.
          If the shares were trading at $5.00 on the distribution date and the
          rights were trading at $1.00, the rights would have a fair market
          value of $80, which would be 16% of the shares' $500 fair market
          value. In this case, the holder's basis in the shares would be
          allocated between the rights and the shares.

     The holding period of a shareholder with respect to rights received as a
distribution on such shareholder's common stock will include the shareholder's
holding period for that common stock in addition to the actual holding period of
the rights.

     In the case of a purchaser of rights, the tax basis of such rights will be
equal to the purchase price paid therefor, and the holding period for such
rights will commence on the day following the date of the purchase.

     Transfer of the rights. A shareholder who sells the rights prior to
exercise will recognize gain equal to any excess of the amount realized from the
sale over such shareholder's basis (if any) in the rights sold. Conversely, if
the shareholder's basis in the rights sold exceeds the amount realized on the
sale, the shareholder will recognize a loss equal to that excess. Such gain or
loss will be capital gain or loss if gain or loss from a sale of the underlying
shares would be characterized as capital gain or loss at the time of such sale.
Any gain or loss recognized on a sale of rights acquired by purchase will be
capital gain or loss if the underlying shares would be a capital asset in the
hands of the seller.

     Lapse of the rights. Shareholders who allow the rights received by them to
lapse will not recognize any gain or loss, and no adjustment will be made to the
basis of the common stock, if any, owned by such shareholders.

     Purchasers of the rights will be entitled to a loss equal to their tax
basis in the rights, if such rights expire unexercised. Any loss recognized on
the expiration of the rights acquired by purchase will be a capital loss if the
underlying rights shares would be a capital asset in the hands of the purchaser.

     Exercise of the rights; basis and holding period of common stock. Holders
of rights will not recognize any gain or loss upon the exercise of rights. The
basis of the common stock acquired through exercise of the rights will be equal
to the sum of the subscription price paid therefor and the holder's basis in
such rights (if any).

     The holding period for the common stock acquired through exercise of the
rights will begin on the date the rights are exercised.


                                       24

<PAGE>



     Information reporting and withholding. Under the backup withholding rules
of the Internal Revenue Code, a holder of the rights may be subject to backup
withholding at the rate of 31 percent with respect to payments made pursuant to
this offering, unless such rights holder

     o    is a corporation or comes within certain other exempt categories and,
          when required, demonstrates this fact, or

     o    provides a correct taxpayer identification number and certifies under
          penalties of perjury that the taxpayer identification number is
          correct and that the holder of rights is not subject to backup
          withholding because of a failure to report all dividends and interest
          income.

     Any amount withheld under these rules will be credited against such
person's federal income tax liability. Radyne ComStream may require holders of
the rights to establish exemption from backup withholding or to make
arrangements satisfactory to Radyne ComStream with respect to the payment of
backup withholding.

     The foregoing is included for general information only. Accordingly, each
holder is urged to consult with his or her own tax advisor with respect to the
tax consequences of the rights offering applicable to his or her own particular
tax situation, including the application and effect of federal, state and local
income and other tax laws.

                           Price Range of Common Stock

     Radyne ComStream's common stock is traded in the over-the-counter market
under the OTC Bulletin Board symbol "RADN". However, there is no established
trading market as actual transactions are infrequent. The following table sets
forth the range of high and low trading prices as reported by the National
Quotation Bureau, Inc. for the periods indicated. At April 16, 1999, Radyne
ComStream had approximately 443 shareholders of record. Radyne ComStream
believes that the number of beneficial owners is actually in excess of 1,600,
due to the fact that a large number of shares are held in street name.


                                          High                  Low
                                          ----                  ---

1997:

First Quarter                             6                     3-1/8

Second Quarter                            3-1/4                 3

Third Quarter                             10-3/4                5

Fourth Quarter                            10-1/2                4


                                       25

<PAGE>




                                           High                 Low
                                           ----                 ---

1998:
                                          5-1/4                 2-7/64
First Quarter

Second Quarter                            5                     3

Third Quarter                             5                     3-3/16

Fourth Quarter                            5                     2-1/2


1999:

First Quarter                             4-1/4                 2-1/4

On April 21, 1999 the last sale price of the common stock as reported by the OTC
Bulletin Board was $3-5/8 per share.

                          Description of Capital Stock

Common stock

     The following summary description of the common stock is qualified in its
entirety by reference to Radyne ComStream's Certificate of Incorporation.

     Radyne ComStream is authorized to issue up to 20,000,000 shares of common
stock, par value $.002 per share, of which 5,934,340 shares are outstanding as
of the date hereof. Holders of common stock are entitled to one vote for each
share held of record on each matter submitted to a vote of stockholders. There
is no cumulative voting for election of directors. Holders of common stock are
entitled to receive dividends ratably when, as and if declared by the Board of
Directors out of funds legally available therefor and, upon the liquidation,
dissolution or winding up of Radyne ComStream, are entitled to share ratably in
all assets remaining after payment of liabilities. Holders of common stock have
no preemptive rights and have no rights to convert their common stock into any
other securities. The outstanding common stock is validly authorized and issued,
fully paid and nonassessable.

Transfer agent

     Radyne ComStream has appointed Continental Stock Transfer & Trust Company
as transfer agent for the common stock.


                                       26

<PAGE>



                         Shares Eligible for Future Sale

     The sale, or availability for sale, of a substantial number of shares of
common stock in the public market subsequent to this offering pursuant to Rule
144 under the Securities Act ("Rule 144") or otherwise could materially
adversely affect the market price of the common stock and could impair Radyne
ComStream's ability to raise additional capital through the sale of its equity
securities or debt financing. Upon completion of the rights offering, if all
rights are fully exercised, there would be approximately 10,679,416 shares of
common stock issued and outstanding. Of these shares, Radyne ComStream believes
that approximately 1,002,616 would be freely transferable immediately. The
remaining approximately 9,676,800 shares would be held by ST and would be
eligible for resale, subject to the volume and manner of sale limitations of
Rule 144 under the Securities Act.

     Up to an aggregate of 1,837,457 shares of common stock may be purchased by
the holders of options outstanding under our 1996 Incentive Stock Option Plan.
All of the shares issuable upon exercise of such options are covered by a
currently effective registration statement on Form S-8. Of these options,
1,007,332 are presently exercisable and the remaining 830,125 will become
exercisable over the next three years. In addition, up to 1,876,695 shares may
be issued upon conversion of the note held by Spar. If such shares are issued,
Spar is entitled to certain registration rights which would require Radyne
ComStream to file a registration statement for such shares. If all of the shares
underlying the Spar note are registered by Radyne ComStream and all of the
shares issuable upon exercise of options under our 1996 Incentive Stock Option
Plan are so issued, an additional 3,714,152 shares will be freely tradeable.

     Prior to this offering, there has been no established public market for
Radyne ComStream's securities as trading in the common stock has been
infrequent. Following this offering, Radyne ComStream cannot predict the effect,
if any, that sales of shares of common stock pursuant to Rule 144 or otherwise,
or the availability of such shares for sale, will have on the market price from
time to time. Nevertheless, sales by the current stockholders of a substantial
number of shares of common stock in the public market could materially adversely
affect market prices for the common stock. In addition, the availability for
sale of a substantial number of shares of common stock acquired through the
exercise of rights or outstanding options under the Plan could materially
adversely affect market prices for the common stock.




                                       27

<PAGE>



                                  Legal Matters

     Certain legal matters will be passed upon for Radyne ComStream by Dorsey &
Whitney LLP, New York, New York.

                                     Experts

     The consolidated financial statements for Radyne ComStream Inc. at December
31, 1998 and for the year then ended have been incorporated by reference herein
and in the registration statement in reliance upon the report of KPMG LLP,
independent certified public accountants, appearing elsewhere herein, and upon
the authority of said firm as experts in accounting and auditing. The financial
statements of Radyne ComStream Inc. at December 31, 1997, for the year then
ended, for the six months ended December 31, 1996 and for the year ended June
30, 1996, incorporated by reference in this Prospectus from our Report on Form
10-K for the year ended December 31, 1998, have been audited by Deloitte &
Touche LLP, independent auditors, as stated in their report which is
incorporated herein by reference, and have been so incorporated in reliance upon
the report of such firm given upon their authority as experts in accounting and
auditing. Ernst & Young LLP, independent auditors, have audited the consolidated
financial statements of ComStream Holdings, Inc. at December 31, 1997 and 1996,
and for each of the three years in the period ended December 31, 1997, included
in our Report on Form 8-K/A filed with the Securities and Exchange Commission on
May 5, 1999, as set forth in their report, which is included and incorporated by
reference in this prospectus. The consolidated financial statements of ComStream
Holdings, Inc. are included and incorporated by reference in reliance on the
report of Ernst & Young LLP, given on their authority as experts in accounting
and auditing.

                Special Note Regarding Forward-looking Statements

     Certain statements in the Prospectus Summary and under the captions "Risk
Factors," "Purpose of the Rights Offering and Use of Proceeds", and elsewhere in
this Prospectus constitute "forward-looking statements" within the meaning of
Section 27A of the Securities Act and Section 21E of the Exchange Act. Such
forward-looking statements involve known and unknown risks, uncertainties and
other factors, which may cause the actual results, performance or achievements
of Radyne ComStream, or industry results, to be materially different from any
future results, performance or achievements expressed or implied by such
forward-looking statements. Such factors include, among others, the following
general economic and business conditions: the loss of, or the failure to
replace, any significant customers; changes in business strategy or development
plans; the timing and success of new product introductions; the quality of
management; the availability, terms and deployment of capital; the business
abilities and judgments of personnel; the availability of qualified personnel;
and other factors referenced in this Prospectus. These forward-looking
statements speak only as of the date of this Prospectus. Radyne ComStream
expressly disclaims any obligation or undertaking to release publicly any
updates or revisions to any forward-looking statement contained herein to
reflect any change in Radyne ComStream's expectations with regard thereto or any
change in events, conditions or circumstances on which any such statement is
based.




                                       28

<PAGE>


================================================================================
No  dealer,  salesman,  or any  other  person  has been  authorized  to give any
information or to make any  representation  not contained in this  Prospectus in
connection  with this offering.  If given or made, you should not rely upon such
information or representation as having been authorized by Radyne ComStream Inc.
This  Prospectus  does not constitute an offer to sell, or a solicitation  of an
offer to buy, any of the securities  offered hereby in any  jurisdiction  to any
person  to whom it is  unlawful  to make such an offer or  solicitation  in such
jurisdiction.  You should not assume based on the delivery of this Prospectus or
the  execution  of sales  under this  Prospectus  that the  information  in this
document remains current.



                                   ----------







                               TABLE OF CONTENTS


Where You Can Find More Information ........
Summary of the Rights Offering..............
Risk Factors ...............................
Purpose of the Rights Offering and Use of
  Proceeds .................................
Dilution ...................................
The Rights Offering ........................
Federal Income Tax Consequences.............
Price Range of Common Stock ................
Description of Capital Stock ...............
Shares Eligible for Future Sale ............
Legal Matters ..............................
Experts ....................................
Special Note Regarding Forward-looking
  Statements ...............................







                                4,745,076 Shares

                              RADYNE COMSTREAM INC.


                                  common stock

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



                                   PROSPECTUS











================================================================================




<PAGE>



                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.    OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

The   following  is  an   itemization   of  all  expenses   (subject  to  future
contingencies)  incurred or expected to be incurred by Radyne  ComStream Inc. in
connection with the issuance and  distribution  of the securities  being offered
hereby (items marked with an asterisk (*) represent estimated expenses):

     SEC Registration Fee                                         $  4,921

     Legal Fees and Expenses                                       150,000*


     Blue Sky Fees (including counsel fees)                         20,000*

     Accounting Fees and Expenses                                   55,000*

     Transfer Agent and Registrar Fees                               7,500*

     Printing and Engraving Expenses                                50,000*


     Miscellaneous                                                  12,579*


     Total                                                         300,000


ITEM 15.    INDEMNIFICATION OF OFFICERS AND DIRECTORS

New York  Business  Corporation  Law,  Article 7, enables a  corporation  in its
original certificate of incorporation,  or an amendment thereto validly approved
by  stockholders,  to  eliminate or limit  personal  liability of members of its
Board of  Directors  for  violations  of a  director's  fiduciary  duty of care.
However,  the elimination or limitation shall not apply where there has been bad
faith,  intentional  misconduct or a knowing  violation of law, the payment of a
dividend or approval of a stock  repurchase  which is deemed illegal,  any other
violation  of  Section  719 of the  New  York  Business  Corporation  Law,  or a
financial  profit or other  advantage  to which  the  director  was not  legally
entitled.  Radyne Corp's  Certificate  of  Incorporation  includes the following
language:

          "SEVENTH: A director of the Corporation shall not be personally liable
          to the Corporation or its  shareholders  for damages for any breach of
          duty as a director;  provided that,  except as  hereinafter  provided,
          this Article SEVENTH shall neither eliminate nor limit liability:  (a)
          if  a  judgment  or  final   adjudication   adverse  to  the  director
          establishes  that (i) the  director's  acts or  omissions  were in bad
          faith or involved  intentional  misconduct  or a knowing  violation of
          law, (ii) the director personally gained in fact a financial profit or
          other  advantage to which the director  was not legally  entitled,  or
          (iii)  the  director's  acts  violated  Section  719 of the  New  York
          Business  Corporation Law; or (b) for any act or omission prior to the
          effectiveness  of this Article SEVENTH.  If the Corporation  hereafter
          may by law be  permitted  to further  eliminate  or limit the personal
          liability  of  directors,  then  pursuant  hereto the  liability  of a
          director of the  Corporation  shall,  at such time,  automatically  be
          further  eliminated or limited to the fullest extent permitted by law.
          Any  repeal  of or  modification  to the  provisions  of this  Article
          SEVENTH

                                      II-1

<PAGE>



          shall not  adversely  affect any right or  protection of a director of
          the Corporation  existing pursuant to this Article SEVENTH immediately
          prior to such repeal or modification.

          EIGHTH:  The  Corporation  may, to the  fullest  extent  permitted  by
          Section 721 through 726 of the Business  Corporation  Law of New York,
          indemnify  any and all directors and officers whom it shall have power
          to indemnify  under the said  sections from and against any and all of
          the expenses,  liabilities or other matters  referred to in or covered
          by  such   section  of  the   Business   Corporation   Law,   and  the
          indemnification  provided for herein shall not be deemed  exclusive of
          any other rights to which the persons so  indemnified  may be entitled
          under any By-Law,  agreement,  vote of shareholders  or  disinterested
          directors or otherwise, both as to action in his/her official capacity
          and as to action in another capacity by holding such office, and shall
          continue as to a person who has ceased to be a director or officer and
          shall inure to the benefit of the heirs,  executors and administrators
          of such a person."

ITEM 16.   EXHIBITS

(a) The following exhibits are filed herewith:

  EXHIBIT NO.
  -----------

     2.1*           Stock Purchase  Agreement dated August 28, 1998 between Spar
                    Aerospace Limited and Radyne ComStream Inc.

     5.1            Opinion of Dorsey & Whitney LLP

     8.1            Opinion of Dorsey & Whitney LLP

     10.1**         1996 Incentive Stock Option Plan

     10.2***        Employment   Agreement   with  Robert  C.  Fitting   (Radyne
                    Termsheet)

     10.3****       Lease for facility in Phoenix, Arizona

     10.4*****      Amendment to 1996 Incentive Stock Option Plan

     10.5+          Lease between ADI Communication Partners, L.P. and ComStream
                    dated April 23, 1997

     10.6+          First Amendment to lease between ADI Communication  Partners
                    L.P. and ComStream dated July 16, 1997

     10.7+          Second  Amendment to Lease between Kilroy  Realty,  L.P. and
                    ComStream dated November 18, 1998

     10.8+          Indemnity  Agreement  between  Pacific Bell  Corporation and
                    ComStream dated November 18, 1998

     10.9+          Letter  Agreement  between  Spar and Radyne  ComStream  Inc.
                    dated November 18, 1998

     13.1           Annual Report to Security  Holders on Form 10-K for the year
                    ended December 31, 1998

     23.1           Consent of KPMG LLP

     23.2           Consent of Deloitte & Touche LLP

     23.3           Consent of Ernst & Young LLP

     23.4           Consent of Dorsey & Whitney  LLP  (contained  in the opinion
                    filed as Exhibit 5.1)

                                      II-2

<PAGE>



     23.5           Consent of Dorsey & Whitney  LLP  (contained  in the opinion
                    filed as Exhibit 8.1)

     24.1+          Power of Attorney

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

*    Incorporated  by reference from  Registrant's  Form 8-K filed on August 28,
     1998.

**   Incorporated by reference from Registrant's  Registration Statement on Form
     S-8, dated and declared effective on March 12, 1997 (File No. 333-23159).

***  Incorporated by reference from Registrant's amended Registrant Statement on
     Form S-1,  dated May 8, 1997 and  declared  effective on May 12, 1997 (File
     No. 333-18811).

**** Incorporated by reference from Registrant's  Annual Report on Form 10-K for
     the year Ended December 31, 1997.

*****Incorporated by reference from Registrant's  Registration Statement on Form
     S-8,  dated  and  declared   effective  on  November  18,  1998  (File  No.
     333-67469).

+    Previously filed.

ITEM 17.   UNDERTAKINGS.

The undersigned registrant hereby undertakes:

     (1) To file,  during any period in which  offers of sales are being made, a
     post-effective amendment to this registration statement:

          (i) To include any  prospectus  required by Section  10(a)(30)  of the
          Securities Act of 1933;

          (ii) To reflect in the  prospectus  any facts or events  arising after
          the effective date of the  registration  statement (or the most recent
          post-effective  amendment  thereof)  which,  individually  or  in  the
          aggregate, represent a fundamental change in the information set forth
          in the  registration  statement.  Notwithstanding  the foregoing,  any
          increase  or decrease  in volume of  securities  offered (if the total
          dollar  value of  securities  offered  would not exceed that which was
          registered)  and  any  deviation  from  the  low  or  high  end of the
          estimated  maximum  offering  range  may be  reflected  in the form of
          prospectus  filed with the  Commission  pursuant to Rule 424(b) if, in
          the aggregate,  the changes in volume and price represent no more than
          20 percent change in the maximum aggregate offering price set forth in
          the   "Calculation  of  Registration   Fee"  table  in  the  effective
          registration statement.


                                      II-3

<PAGE>

          (iii) To include any material  information with respect to the plan of
          distribution not previously disclosed in the registration statement or
          any  material   change  to  such   information  in  the   registration
          statement;"


PROVIDED,  HOWEVER, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
registration statement is on Form S-3, Form S-8 or Form F-3, and the information
required to be included in a  post-effective  amendment by those  paragraphs  is
contained in periodic  reports filed with or furnished to the  Commission by the
registrant  pursuant to Section 13 or 15(d) of the  Securities  Exchange  Act of
1934 that are incorporated by reference in the registration statements.

(2) That, for the purpose of determining  any liability under the Securities Act
of  1933,  each  such  post-effective  amendment  shall  be  deemed  to be a new
registration  statement  relating to the  securities  offered  therein,  and the
offering of such  securities at that time shall be deemed to be the initial BONA
FIDE offering thereof.

(3) To remove from  registration by means of a  post-effective  amendment any of
the securities  being  registered  which remain unsold at the termination of the
offering.

(4) The undersigned  registrant  hereby undertakes to supplement the prospectus,
after the expiration of the subscription period, to set forth the results of the
subscription offer and the terms of any subsequent reoffering thereof.

(5) The  undersigned  registrant  hereby  undertakes  to  deliver or cause to be
delivered with the prospectus,  to each person to whom the prospectus is sent or
given,  the latest annual report,  to security  holders that is  incorporated by
reference  in  the  prospectus  and  furnished   pursuant  to  and  meeting  the
requirements  of Rule 14a-3 or Rule 14c-3 under the  Securities  Exchange Act of
1934;  and,  where  interim  financial  information  required to be presented by
Article 3 of Regulation S-X is not set forth in the prospectus,  to deliver,  or
cause to be  delivered to each person to whom the  prospectus  is sent or given,
the latest  quarterly  report that is specifically  incorporated by reference in
the prospectus to provide such interim financial information.

(6) Insofar as indemnification  for liabilities arising under the Securities Act
of 1933 may be permitted to directors,  officers and controlling  persons of the
registrant pursuant to the foregoing  provisions,  or otherwise,  the registrant
has been advised that in the opinion of the Securities  and Exchange  Commission
such  indemnification  is against  public policy as expressed in the Act and is,
therefore,  unenforceable. In the event that a claim for indemnification against
such liabilities  (other than the payment by the registrant of expenses incurred
or paid by a director,  officer or  controlling  person of the registrant in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.



                                      II-4

<PAGE>




                                   SIGNATURES

In  accordance  with  the  requirements  of  the  Securities  Act of  1933,  the
Registrant  has duly  caused  this  Registration  Statement  to be signed on its
behalf by the undersigned,  thereunto duly  authorized,  in the city of Phoenix,
Arizona on May 5, 1999.



                                   RADYNE COMSTREAM INC.


                                   By: /s/ Robert C. Fitting
                                       -----------------------------------------
                                   Robert C. Fitting, President and Chief
                                   Executive Officer



                                   By: /s/ Garry Kline 
                                       -----------------------------------------
                                   Garry Kline, Vice President-Finance
                                   (Principal Financial and Accounting Officer)




                                      II-5

<PAGE>



Pursuant to the  requirements of the Securities Act of 1933,  this  Registration
Statement has been signed by the following  persons in the capacities and on the
dates indicated.



             SIGNATURE                  TITLE                           DATE


/s/ Robert C. Fitting         Chief Executive Officer, President     May 5, 1999
- --------------------------
Robert C. Fitting


/s/ Garry D. Kline            Vice President-Finance                 May 5, 1999
- --------------------------
Garry D. Kline


/s/ Robert A. Grimes*         Director                               May 5, 1999
- --------------------------
Robert A. Grimes


/s/ Lim Ming Seong*           Chairman of the Board of Directors     May 5, 1999
- --------------------------
Lim Ming Seong


/s/ Lee Yip Loi*              Director                               May 5, 1999
- --------------------------
Lee Yip Loi


/s/ Chan Wee Piak*            Director                               May 5, 1999
- --------------------------
Chan Wee Piak


/s/ Dennis Elliot*            Director                               May 5, 1999
- --------------------------
Dennis Elliot





* By: /s/ Robert C. Fitting  
      -----------------------------
          Robert C. Fitting
          Attorney-in-Fact


                                      II-6

<PAGE>



                                  EXHIBIT INDEX

EXHIBIT NO.
- -----------

     5.1       Opinion of Dorsey & Whitney LLP

     8.1       Opinion of Dorsey & Whitney LLP

     13.1      Annual Report to Security Holders on Form 10-K for the year ended
               December 31, 1998

     23.1      Consent of KPMG LLP

     23.2      Consent of Deloitte & Touche LLP

     23.3      Consent of Ernst & Young LLP

     23.4      Consent of Dorsey & Whitney LLP  (contained  in the Opinion filed
               as Exhibit 5.1)

     23.5      Consent of Dorsey & Whitney LLP  (contained  in the Opinion filed
               as Exhibit 8.1)





                                      II-7




                                                                     Exhibit 5.1



Radyne ComStream Inc.
3138 East Elwood Street
Phoenix, AZ 85034


May 5, 1999


Ladies and Gentlemen:

     We have acted as special counsel to Radyne  ComStream Inc. (the "Company"),
a New York  corporation,  in connection  with the  preparation and filing of the
Company's  Registration  Statement  on Form S-2 (the  "Registration  Statement")
under the Securities Act of 1933, as amended,  relating to the proposed offering
by the Company of up to 4,745,076  shares of its Radyne common stock,  par value
$.002 per share (the "Common Stock")  issuable upon exercise of 4,745,076 rights
(the  "Rights")  to  purchase  Common  Stock of the  Company.  We have made such
investigation and examined such documents and records (including certificates of
certain public officials and certificates  furnished by officers of the Company)
as we have deemed necessary, and on that basis we are of the following opinion:

     The shares of the  Company's  Common Stock  issuable  upon  exercise of the
Rights  which  will be offered by the  Company  to the  public  pursuant  to the
Registration  Statement have been duly  authorized and, when issued and paid for
in the manner  described in the Registration  Statement,  will be validly issued
and fully paid and nonassessable. The Rights, when issued and distributed in the
manner described in the Registration Statement,  will be validly issued and will
be binding obligations of the Company.

     We consent to the use of our name under the caption "Legal  Matters" in the
prospectus  constituting a part of the Registration  Statement and to the use of
this opinion for filing as exhibit 5.1 to the Registration  Statement. In giving
this consent, we do not hereby admit that we come within the category of persons
whose consent is required  under Section 7 of the Securities Act of 1933, or the
rules and regulations of the Securities and Exchange Commission thereunder.

                                                  Very truly yours,


                                                  /s/ DORSEY & WHITNEY LLP

                                                  DORSEY & WHITNEY LLP





                                                                     Exhibit 8.1




Radyne ComStream Inc.
3138 East Elwood Street
Phoenix, AZ 85034


May 5, 1999


Dear Sir or Madam:

     We have acted as counsel  for Radyne  ComStream  Inc,  (the  "Company")  in
connection  with the preparation and filing under the Securities Act of 1933, as
amended  (the  "Securities  Act")  and the  rules  and  regulations  promulgated
thereunder  (the  "Rules"),  of  a  Registration  Statement  on  Form  S-2  (the
"Registration Statement"),  filed with the Securities and Exchange Commission in
connection with a proposed rights  offering of the Company's  common stock.  You
have asked us to render our opinion as to matters hereinafter set forth.

     We have examined originals and copies, certified or otherwise identified to
our satisfaction, of all such agreements, certificates and other documents as we
have deemed  necessary as a basis for this opinion.  In such examination we have
assumed the genuineness of all signatures and the  authenticity of all documents
submitted  to us as  originals  and the  conformity  with the  originals  of all
documents  submitted to us as copies.  We have,  when relevant facts material to
our opinion were not  independently  established  by us, relied to the extent we
deemed such  reliance  proper upon  written or oral  statements  of officers and
other representatives of the Company. Based on and subject to the foregoing, the
opinion  attributed to us in the section  entitled  "Certain  Federal Income Tax
Consequences"  in  the  prospectus  constituting  Part  I  to  the  Registration
Statement (the  "Prospectus")  accurately states our opinion with respect to the
matters discussed.

     We consent to the filing of this opinion as an exhibit to the  Registration
Statement and to the references to our name under the captions  "Certain Federal
Income Tax Consequences"  and "Legal Matters" in the Prospectus.  In giving this
consent,  we do not hereby  admit that we come  within the  category  of persons
whose consent is required by the Securities Act or the Rules.

                                                Very truly yours,


                                                /s/ DORSEY & WHITNEY LLP

                                                DORSEY & WHITNEY LLP




                                                                    Exhibit 23.1


                          Independent Auditors' Consent



The Board of Directors and Stockholders
Radyne ComStream Inc.:


We consent to the incorporation by reference in the registration  statement (No.
333-70403) on Amendment No. 1 to Form S-2 of Radyne ComStream Inc. of our report
dated March 19,  1999,  relating  to the  consolidated  balance  sheet of Radyne
ComStream  Inc.  and  subsidiaries  as of  December  31,  1998  and the  related
consolidated statements of operations, stockholders' capital deficiency and cash
flows for the year then ended,  which  report  appears in the December 31, 1998,
annual report on Form 10-K of Radyne  ComStream Inc. and to the reference to our
firm under the heading "Experts" in the prospectus.


/s/ KPMG LLP

KPMG LLP

Phoenix, Arizona
May 4, 1999




                                                                    Exhibit 23.2




Independent Auditors Consent


We consent to the  incorporation  by  reference in this  Amendment  No. 1 to the
Registration  Statement No. 333-70403 of Radyne ComStream Inc.  (formerly Radyne
Corp.) of our report dated  February 4, 1998,  appearing in the Annual Report on
Form 10-K of Radyne  ComStream Inc.  (formerly  Radyne Corp.) for the year ended
December 31, 1998, and to the reference to us under the heading "Experts" in the
Prospectus, which is part of this Registration Statement.


/s/ DELOITTE & TOUCHE LLP

DELOITTE & TOUCHE LLP
Phoenix, Arizona


May 4, 1999





                                                                    Exhibit 23.3



               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


We  consent to the  reference  to our firm under the  caption  "Experts"  in the
Registration Statement (Form S-2 No. 333-70403) and related Prospectus of Radyne
ComStream Inc. for the  registration of 4,745,076 shares of its common stock and
to the use and  incorporation by reference  therein of our report dated February
16,  1998  (except  for Note 11, as to which the date is April 16,  1998),  with
respect to the consolidated  financial  statements of ComStream  Holdings,  Inc.
included  in  Radyne  ComStream  Inc.'s  Report  on form  8-K/A  filed  with the
Securities and Exchange Commission on May 5, 1999.


                                                   /s/ ERNST & YOUNG LLP

                                                   ERNST & YOUNG LLP



San Diego, California
May 3, 1999



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