190 lines
9.0 KiB
Plaintext
190 lines
9.0 KiB
Plaintext
THE CLARKE BELT
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OBJECTIVE: The student will understand the history, theory, and
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Satellites in the Clarke belt.
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As previously explained in TLA 7 the Clark Belt is located
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22,300 miles above the earth. At this altitude, the satellite's
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motion is synchronized with the earth's rotation. That is, the
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satellite completes one orbit during the time that the earth makes
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one rotation on it's axis. Three of these satellites, properly
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placed, can link stations in any two parts of the world. All
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satellites now in use, except for some Russian satellites are in
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synchronous orbits.
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Satellites are placed in orbit on the Clarke Belt and assigned a
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specific location on the Clarke Belt. This is necessary as more and
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more satellites are launched and Clarke Belt may become crowded with
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birds in certain sections. This specific location is the longitude on
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the point over the earth's equator. For example, the satellite named
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AURORA has a position on the Clarke Belt of 143 degrees West.
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The following will provide a list of domestic satellites in orbit as
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of May 14, 1985 and their orbit location on the Clarke Belt:
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UNITED STATES DOMESTIC SATELLITE SYSTEM
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Satellite Orbit Locations Frequency Band Date # of Xpdrs/
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West Longitude (GHz) Launched
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_______________________________________________________________________
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SATCOM V 143 4/6 10/82 24/36
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SATCOM I-R 139 4/6 4/83 24/36
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GALAXY I 134 4/6 6/83 24/36
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SATCOM III-R 131 4/6 11/81 24/36
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COMSTAR IV 127 4/6 4/81 24/36
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SPACENET I 120 4/6 & 12/14 5/84 12/36;6/72
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WESTAR V 122.5 4/6 6/82 24/36
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GSTAR I 103 12/24 5/85 16/54
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SBS IV 101 (temporary) 12/14 9/84 10/43
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SBS I 99 12/14 11/80 10/43
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WESTAR IV 99 4/6 2/82 24/36
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SBS II 97 12/14 10/81 10/43
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TELSTAR 301 96 4/6 4/83 24/36
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SBS III 95 12/14 11/82 10/43
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GALAXY III 93.5 4/6 9/84 24/36
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WESTAR III 91 4/6 8/79 12/36
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TELSTAR 302 86 4/6 9/84 24/36
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SATCOM IV 84 4/6 1/82 24/36
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WESTAR II 79 4/6 6/74 12/36
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COMSTAR III & D-2 76 4/6 9/78;9/76 24/36;24/36
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GALAXY II 74 4/6 9/83 24/36
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SATCOM II-R 72 4/6 9/83 24/36
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SPACENET II 69 4/6;12/14 11/84 12/36;6/72
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WESTAR I retired (8/83) 4/6 4/74 12/36
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SARCOM I retired (5/84) 4/6 12/75 24/36
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COMSTAR D-1 retired (9/84) 4/6 4/76 24/36
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SATCOM II retired (2/85) 4/6 3/76 24/36
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In Orbit as of May 14, 1985
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All domestic satellites have a name assigned to them that usually is an
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Abbreviation for who owns the bird. Example: Westar is owned by Western
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Union Telegraph Company.
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The following list are the names and addresses of the owners of
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domestic birds:
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Domestic Satellite Systems:
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ABCI GSTAR
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Advanced Business Communications, Inc GTE Satellite Corporation
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8729 Belmart Road 1 Stamford Forum
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Potomac, Maryland 20854 Stamford, CT
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(203) 965-3303
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Attention: Arthur McNulty
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AMSAT RSI
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American Satellite Company Rainbow Satellite Inc.
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VP-Marketing Gammon and Grange
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1801 Research Boulevard 2621 Constancia
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Rockville, Maryland 20850 Mission Viejo, CA 92692
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(301) 251-8390 Attention: Carl
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Fielstra,Esq.
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COMSTAR SATCOM
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AT&T Co. RCA Frequency Bureau
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Long Lines Department 50 Broad Street
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Room 40170 Room 1125
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Bedminister, New Jersey 07921 New York, NY 10004
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(201) 234-4706 (212) 806-7634
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Attention: Bruce C. Andrews Attention: John D. Bowker
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FASSC SBS
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Ford Aerospace Satellite Satellite Business Systems
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Service Corp. 8263 Greensboro Drive
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300 Renaissance Center McLean, VA 22102
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Detroit, Michigan 48243 (703) 442-5514
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Attention: Alan Parker Attention: Alice Gravely
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GALAXY SPACENET
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Hughes Communication, Inc. GTE Satellite Corporation
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P.O. Box 92424 1 Stamford Forum
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Los Angeles, CA 90009 Stamford, CT.
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(213) 615-1000 (203) 965-3303
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Attention: Albert Caprioglio Attention: Arthur McNulty
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WESTAR USAT
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Western Union Telegraph Co. United States Satellite
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1828 L. Street, N.W. System, Inc.
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Washington, D.C. 20036 122 East 42nd Street
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(202) 862-4614 Suite 5300
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Attention: Richard Cain New York, NY 10168
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(212) 661-4230
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INTELSAT SPACECOM
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Comsat General Corporation 1300 Quince Orchard Blvd.
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950 L'Enfant Plaza, S.W. Gaitherburg, MD 20878
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Washington, D.C. 20024 (301) 258-6800
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Attention: William Brobst
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The use of domestic birds are usually for entertainment purposes;
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music,
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sports, news, weather, etc. Special interest programs have and will
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continue to grow in our society. A partial list of program suppliers
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are state below:
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Appalachian Community Services Network Turner Broadcasting
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1666 Connecticut Avenue, NW Cable News Network
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Washington, D.C. 20235 1050 Techwood Drive
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David Buchingham (202-673-7866) Atlanta, GA 30309
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Don Anderson (404-898-8500)
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Associated Press U.S.A. Network
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50 Rockefeller Plaza 208 Harristown, Rd.
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New York, NY 10020 (212-262-4014) Glen Rock, NJ 07452
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(201-445-8550)
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Christian Broadcasting Network, Inc. U.F.I. Newstime
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Virginia Beach, VA 23463 220 East 42nd Street
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Service Manager (804-424-7777) New York, NY 10017
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Eastern Microwave, Inc Warner Amax
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3 Northern Concourse, PO Box 4872 1211 Avenue of the Americas
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Syracuse, NY 13221 (315-455-5955) New York, NY 10036
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Gary Koester (212-944-4250)
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Entertainment & Sports Programming Weatherscan
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Network Loop 132, Throckmorton Hwy.
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319 Cooke Street Olney, TX 76374 (817-564-5688)
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Plainville, CT 06062 (203-747-6847)
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GalaVision Home Box Office
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250 Park Avenue 7639 Churchill Way, Suite 133
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New York, NY 10017 Box 63
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Fred Landman (212-953-7550) Dallas, TX 75251 (214-387-8557)
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Home Theater Network Modern Satellite Network
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465 Congress Street 43 Rockefeller Center
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Portland, ME 04101 (207-774-0300) New York, NY 10020
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Michael David (212-765-3100)
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Nickelodeon SIN
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1211 Avenue of the Americas National Spanish Television
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New York, NY 10036 Network
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Gary Koester (212-944-4250) New York, NY 10017
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Susan Catapanp (212-953-7500)
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Showtime
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1211 Avenue of the Americas
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New York, NY 10036 (212-880-6611)
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Activities: (1) Have students write to a domestic satellite system
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company and request information on a particular bird.
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(2) Have students write to a program supplier and request
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information on their area of specialty, types of
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programming; what kind of satellite that transmits
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their programs, etc.
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TLA Competencies:
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1. The student will describe geosynchronous orbit.
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2. The student will identify at least 1 entertainment and 1 military
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bird.
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