Progress Report (Dec 01, 1995)

4800-EX-MR-1995 Post Grant Documents

COMSAT, CORP.

1999-07-20ELS_11031

                                                                               Robert A. Mansbach
                                                                                               General Attorney
a International Communications

                                                                                       6560 Rock Spring Drive
                                                                                           Bethesda, MD 20817
                                                                                   Telephone 301 214 3459
                                                                                             Fax 301 214 7100




                                       December 1,    1995




        Experimental Licensing Branch, M.S. 1300E1                    rh***“nn-hm
        Federal Communications Commission                               e lllths
        2000 M Street,                                                                 f
        Washington,          D.C.   20554

                                                                       L#   ’-‘I       J
          . *
        File     NS.    4800—EX—MR—94                                              4


        Dear Sir or Madanm:

             COMSAT Corporation, by its COMSAT World Systems business
        unit ("COMSAT"), herein files a progress report required by the
        Federal Communications Commission in connection with the
        experimental authority granted in the above—captioned file.

             If there are any questions concerning the foregoing, please
        contact the undersigned. COMSAT‘s next progress report will be
        filed with the Commission on, or about, June 1, 1996.




                                            Respectfully submitted,


                                            COMSAT Corporation
                                            COMSAT World Systems



                                       m 4AMLA
                                            Rdbert A. Mansbach
                                            Its Attorney




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       Enclosure




                                     csuf. bome


                  REPORT ON TESTING OF WIDEBAND MOBILE
               SERVICES UNDER PART V EXPERIMENTAL AUTHORITY


      Pursuant to its current experimental authorization, COMSAT
World Systems (CWS), continues to conduct three major wideband
mobile (WBM) tests involving the transmission of voice and data
signals at C— and Ku—band frequencies via INTELSAT satellites in
the Atlantic Ocean region to and from seagoing vessels. These
services generally are of a type which could not be offered via
Inmarsat, due to  bandwidth limitations inherent in L—band
satellite networks.

      Project Athena, which is the provision of T—1 (1.544 Mbps)
service to a U.S. Navy aircraft carrier, is continuing in the AOR.
Based upon the success of this program, the Navy is planning to
expand WBM service to higher rate digital speeds to additional
ships in the POR and eventually to ships in the IOR.       In addition,
several U.S. Navy ships are currently receiving service utilizing
INTELSAT capacity which allows sailors to make phone calls while
deployed at sea.

         In another Navy WBM test,   the U.S. Navy command ship Mt.
Whitney is continuing to receive K—band spot beam service via
INTELSAT. As previously reported,      these beams are "steered"
across   the Atlantic Ocean,   providing continuous   full—time,   full—
duplex T—1 communications channels.

         Finally,   CWS is conducting a test of WBM in conjunction
with commercial passenger ships.     This test has also proven to be
a success.

       The overall purpose of these experiments is to help
provide a basis upon which the Commission can issue rules
addressing the provision of C—and K—band communications in a
maritime mobile environment. Based upon experience to date, it
appears that such service is technically compatible with existing
fixed services and will promote the public interest by developing
the competitive marketplace.



Document Created: 2001-08-22 07:17:28
Document Modified: 2001-08-22 07:17:28

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