U.S. Military UHF Milsatcom Frequencies January/February 1997 MARISAT Satellites Commercial Services Communications Packages L-band Downlink 1537-1541 MHz C-band Downlink 4195-4199 MHz Tracking, Telemetry and Control (TT&C) 3945.5/3954.5 MHz UHF Gapfiller Characteristics EIRP Wideband Channel 28 dBW EIRP Narrowband Channels 23 dBW (each) Receive G/T -18 dB/K UHF Antenna Coverage 19 degrees earth coverage 25-kHz Narrowband Channels -------------------------- Channel Downlink Frequency Uplink Frequency A 254.150 307.750 B 257.550 311.150 Gapfiller 500-kHz Wideband Channels ----------------------------------- Channel Downlink Frequency (MHz) Uplink Frequency (MHz) 1 248.850 302.450 2 248.875 302.475 3 248.900 302.500 4 248.925 302.525 5 248.950 302.550 6 248.975 302.575 7 249.000 302.600 8 249.025 302.625 9 249.050 302.650 10 249.075 302.675 11 249.100 302.700 12 249.125 302.725 13 249.150 302.750 14 249.175 302.775 15 249.200 302.800 16 249.225 302.825 17 249.250 302.850 18 249.275 302.875 19 249.300 302.900 20 249.325 302.925 Current Information on MARISAT Constellation -------------------------------------------- Satellite Location Intl Designator SSC Number Launch Date --------- -------- --------------- ---------- ----------- MARISAT 1 104.7 deg West 1976-017A 08697 Feb 19, 1976 MARISAT 2 178.2 deg West 1976-053A 08882 Jun 9, 1976 MARISAT 3 170.9 deg West 1976-101A 09478 Oct 14, 1976 Fleet Satellite Communications (FLTSATCOM) Satellites Alpha/Bravo/Charlie Frequency Bandplans-Downlinks Alpha Bravo Charlie Channel 1: Fleet Broadcast Channels 250.450 250.550 250.650 Channel 2: 500 kHz Wideband Channels 260.350-260.850 262.450-261.950 262.050-262.550 Channels 3-11: Navy Relay Channels ch.3 251.950 252.050 252.150 ch.4 253.650 253.750 253.850 ch.5 255.350 255.450 255.550 ch.6 256.950 257.050 257.150 ch.7 258.450 258.550 258.650 ch.8 265.350 265.450 265.550 ch.9 266.850 266.950 267.050 ch.10 268.250 268.350 268.450 ch.11 269.750 269.850 269.950 Channels 12-23: AFSATCOM Narrowband Channels ch.12 243.945 244.045 244.145 ch.13 243.955 244.055 244.155 ch.14 243.960 244.060 244.160 ch.15 243.965 244.065 244.165 ch.16 243.970 244.070 244.170 ch.17 243.975 244.075 244.175 ch.18 243.980 244.080 244.180 ch.19 243.985 244.085 244.185 ch.20 243.990 244.090 244.190 ch.21 243.995 244.095 244.195 ch.22 244.000 244.100 244.200 ch.23 244.010 244.110 244.210 Current Information on FLTSATCOM Constellation Satellite (Status) Intl Launch Orbital Frequency Desig Date Location Plan F1/Atlantic relay (reserve) 1978-16A Feb 9, 1978 14.5 deg West Alpha F2/Inactive 1979-38A May 4, 1979 ----- Retired from service F3/Inactive 1980-04A Jan 17, 1980 ----- Retired from service F4/Pacific West (reserve) 1980-87A Oct 30, 1980 172 deg East Bravo F5/Inoperative* 1981-73A Aug 6, 1981 ----- Launch failure F6/Destroyed ----------- Mar 26, 1987 Satellite lost, booster failure F7/CONUS (primary) 1986-96A Dec 4, 1986 99.9 deg West Bravo F8/Atlantic (primary) 1989-77A Sep 25, 1989 22.7 deg West Charlie * Satellite inoperative. The Atlas Centaur nose cone shroud collapsed during launch destroying the primary antenna. Leased Satellite (LEASAT) Whiskey/X-ray/Yankee/Zulu Frequency Bandplans-Downlinks Whiskey X-ray Yankee Zulu Channel 1: Fleet Broadcast Channels 250.350 250.450 250.550 250.650 Channel 2: 500 kHz Wideband Channels 263.55-264.05 260.35-260.85 261.45-261.95 262.05-262.55 Channels 3-8: 25-kHz Navy Relay Channels ch. 3 251.850 251.950 252.050 252.150 ch. 4 253.550 253.650 253.750 253.850 ch. 5 255.250 255.350 255.450 255.550 ch. 6 256.850 256.950 257.050 257.150 ch. 7 258.350 258.450 258.550 258.650 ch. 8 265.250 265.350 265.450 265.550 Channels 9-13: AFSATCOM Narrowband Channels ch. 9 243.855 243.955 244.055 244.155 ch. 10 243.860 243.960 244.060 244.160 ch. 11 243.875 243.975 244.075 244.175 ch. 12 243.900 244.000 244.100 244.200 ch. 13 243.910 244.010 244.110 244.210 LEASAT Channel Characteristics Channel Type No. Bandwidth (kHz) EIRP* (dBw) G/T* (dB/K) Relay 6 25 26 -18 Wideband 1 500 28 -18 Narrowband 5 5 16.5 -18 Fleet Broadcast 1 Onboard Processing 26 -20 *Specific minimum values over the coverage areas for the full service period. Current Information on Leasat Constellation Satellite Orbital International SSC Launch Location Designator No. Date LEASAT F1 Retired 1984-113C 15384 Nov 10, 1985 LEASAT F2 177.3 deg West 1984-093C 15236 Aug 31, 1984 LEASAT F3 105.0 deg West 1985-028C 15643 Apr 12, 1985 LEASAT F4 Failed 1985-076D ----- Aug 29, 1985 LEASAT F5 71.5 deg East 1990-002B 20410 Jan 9, 1990 Ultra High Frequency Follow On (UFO) Satellites November/Oscar/Papa/Quebec Frequency Bandplans-Downlinks Channel No Bandwidth November Oscar Papa Quebec Channel 1 (25 kHz) 250.350 250.450 250.550 250.650 Channel 2 (25 kHz) 251.850 251.950 252.050 252.150 Channel 3 (25 kHz) 253.550 253.650 253.750 253.850 Channel 4 (25 kHz) 255.250 255.350 255.450 255.550 Channel 5 (25 kHz) 256.850 256.950 257.050 257.150 Channel 6 (25 kHz) 258.350 258.450 258.550 258.650 Channel 7 (25 kHz) 265.250 265.350 265.450 265.550 Channel 8 (25 kHz) 266.750 266.850 266.950 267.050 Channel 9 (25 kHz) 268.150 268.250 268.350 268.450 Channel 10 (25 kHz) 269.650 269.750 269.850 269.950 Channel 11 (25 kHz) 260.375 260.575 260.425 260.625 Channel 12 (25 kHz) 260.475 260.675 260.525 260.725 Channel 13 (25 kHz) 261.575 262.075 261.625 262.125 Channel 14 (25 kHz) 261.675 262.175 261.725 262.225 Channel 15 (25 kHz) 261.775 262.275 261.825 262.325 Channel 16 (25 kHz) 261.875 262.375 261.925 262.425 Channel 17 (25 kHz) 263.575 263.775 263.625 263.825 Channel 18 (25 kHz) 263.675 263.875 263.725 263.925 Channel 19 (5 kHz) 243.915 243.995 244.075 244.155 Channel 20 (5 kHz) 243.925 244.005 244.085 244.165 Channel 21 (5 kHz) 243.935 244.015 244.095 244.175 Channel 22 (5 kHz) 243.945 244.025 244.105 244.185 Channel 23 (5 kHz) 243.955 244.035 244.115 244.195 Channel 24 (5 kHz) 243.965 244.045 244.125 244.205 Channel 25 (5 kHz) 243.975 244.055 244.135 244.215 Channel 26 (5 kHz) 243.985 244.065 244.075 244.225 Channel 27 (5 kHz) 248.845 248.975 249.105 249.235 Channel 28 (5 kHz) 248.855 248.985 249.115 249.245 Channel 29 (5 kHz) 248.865 248.995 249.125 249.255 Channel 30 (5 kHz) 248.875 249.005 249.135 249.265 Channel 31 (5 kHz) 248.885 249.015 249.145 249.275 Channel 32 (5 kHz) 248.895 249.025 249.155 249.285 Channel 33 (5 kHz) 248.905 249.035 249.165 249.295 Channel 34 (5 kHz) 248.915 249.045 249.175 249.305 Channel 35 (5 kHz) 248.925 248.055 249.185 249.315 Channel 36 (5 kHz) 248.935 248.065 249.195 249.325 Channel 37 (5 kHz) 248.945 248.075 249.205 249.335 Channel 38 (5 kHz) 248.955 248.085 249.215 249.345 Channel 39 (5 kHz) 248.965 248.095 249.225 249.355 Channel 40 (5 kHz) 248.975 248.105 249.235 249.365 Note: Channel 1 is the U.S. Navy multichannel fleet broadcast channel. Channels 2-18 are fleet relay channels. Channels 19-40 are narrowband AFSATCOM channels. Current Information on UFO Constellation SSC No. Intl Desig Name/USA Location ELV Date 22563 1993-15A UFO F1/N/A Failure Atlas I/AC-74 Mar 25, 1993 22787 1993-56A UFO F2/USA 95 71.2 deg East Atlas I/AC-75 Sep 3, 1993 23132 1994-35A UFO F3/USA 104 14.3 deg West Atlas I/AC-76 Jun 24, 1993 23467 1995-03A UFO F4/USA 108 177.6 deg West Atlas II/AC-112 Jan 28, 1993 23589 1995-27A UFO F5/USA 111 72.1 deg East Atlas II/AC-116 May 31, 1993 23696 1995-57A EHF 6/USA 114 105.8 deg West Atlas II/AC-119 Oct 22, 1995 23967 1996-42A EHF 7/USA 127 170.5 deg West Atlas II Jul 25, 1996 1997 EHF 8 100.0 Atlas II 1997 EHF 9 23.0 Atlas II Spare EHF 10 Ground Spare Atlas II