SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 12B-25

                           Notification of Late Filing
                         Commission File Number 0-11685

(Check one):

(x) Form 10-K   ( ) Form 11-K  ( ) Form 20-F    ( ) Form 10-Q   ( ) Form N-SAR

For period ended: December 31, 1998

( ) Transition Report on Form 10-K
( ) Transition Report on Form 20-F
( ) Transition Report on Form 11-K
( ) Transition Report on Form 10-Q
( ) Transition Report on Form N-SAR

For the transition period ended

Nothing  in this  form  shall be  construed  to imply  that the  Commission  has
verified any information contained herein.

If the notification  relates to a portion of the filing checked above,  identify
the item(s) to which the notification relates:

PART I - REGISTRANT INFORMATION

Radyne ComStream Inc.
Full name of registrant

Former name if applicable 

     Radyne Corp.

Address of principal executive office (Street and Number)
     3138 East Elwood Street
     Phoenix, Arizona 85034
     City, State and Zip Code

PART II - RULE 12B-25(B) AND (C)

If the subject report could not be filed without  unreasonable effort or expense
and the registrant seeks relief pursuant to Rule 12b-25(b), the following should
be completed. (Check box if appropriate.)





                                                                     Page 2 of 3


     (a)  The reasons  described in  reasonable  detail in Part III of this form
          could not be eliminated without unreasonable effort or expense;

     (b)  The subject annual report,  semi-annual  report,  transition report on
 [X]      Form 10-K,  20-F, 11-K or Form N-SAR,  or portion  thereof will be
          filed on or before the 15th calendar day following the  prescribed due
          date; or the subject  quarterly  report or  transition  report on Form
          10-Q,  or  portion,  thereof  will be filed  on or  before  the  fifth
          calendar day following the prescribed due date, and

     (c)  The accountant's statement or other exhibit required by Rule 12b-25(c)
          has been attached if applicable.

PART III- NARRATIVE

State below in reasonable  detail the reasons why Form 10-K,  11-K,  20-F, 10-Q,
N-SAR or the  transition  report  portion  thereof could not be filed within the
prescribed time period.

     The Registrant  closed a major business  acquisition  late in the reporting
period.  Its relatively small finance  department staff, which has been affected
by a change  in  independent  auditors  and  personnel  changes  in the  finance
function of the  acquired  company,  requires  additional  time to finalize  the
accounting for the  acquisition  and for the short period  elapsing  between the
acquisition  closing  and year  end and to  obtain  the  necessary  consents  of
independent auditors.

PART IV - OTHER INFORMATION

(1)  Name  and  telephone  number  of  person  to  contact  in  regard  to  this
notification.

                  John B. Wade, III               (212)       415-9200
                  (Name)                          (Area Code) (Telephone Number)

(2) Have all other  periodic  reports  required under Section 13 or 15(d) of the
Securities  Exchange Act of 1934 or Section 30 of the Investment  Company Act of
1940  during  the  preceding  12  months  or for such  shorter  period  that the
registrant was required to file such report(s) been filed?  If the answer is no,
identify report(s).
                                                                  (x) Yes ( ) No

(3) Is it anticipated that any significant  change in results of operations from
the  corresponding  period for the last  fiscal  year will be  reflected  by the
earnings statements to be included in the subject report or portion thereof?

                                                                  (x) Yes ( ) No

If so, attach an explanation of the  anticipated  change,  both  narratively and
quantitatively, and, if appropriate, state the reasons why a reasonable estimate
of the results cannot be made.





                                                                     Page 3 of 3

As a result of the  Registrant's  October  15,  1998  acquisition  of  ComStream
Holdings,  Inc.,  the  Registrant  expects to report an increase in net sales of
approximately  $7,700,000,  an  increase  in  cost  of  sales  of  approximately
$7,800,000, an increase in operating expenses (including restructuring costs and
the write-off of purchased in-process research and development) of approximately
$11,500,000 and an increase in net loss of approximately $12,400,000.

                              RADYNE COMSTREAM INC.
                  (Name of Registrant as Specified in Charter)

has  caused  this  notification  to be signed on its  behalf by the  undersigned
thereunto duly authorized.

Date:    April 1, 1999                     By: /s/ Robert C. Fitting
                                               ---------------------------------
                                           Chief Executive Officer and President