Zarya - Soviet, Russian and International Spaceflight
Satellite Radio Frequencies

Lincoln, UK
2010 Mar 11, UTC
Thursday
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2200-2250 MHz

2250-2300 MHz
Transmissions at S-band

S-band is that part of the frequency spectrum between 2 GHz and 4 GHz. Many satellites transmit at S-band frequencies. This S-band catalogue includes a significant number of satellites in geosynchronous orbit and a quantity in inclined, highly eccentric orbits (HEOs). However, it is much used for low orbiting satellites also.

The United States Department of Defense satellite generally, but not always, use the fixed channels of SGLS (the Space Ground Link System). There is a more-detailed list for these available from the left-hand menu.

At these frequencies, experience has shown that actual transmissions are not precisely on-frequency. Some satellites wander around in frequency, sometimes by a significant amount. It seems to depend on electrical power available through the state of battery charge, output from solar panels, or a combination of the two.

S-band Frequency List

The late Ivan Artner produced a catalogue of S-band transmitting satellites that includes several of the satellites to be found in Mike McCants's "classfd.tle" orbital elements file. Many of these have now been identified.

Ivan's data is acknowledged in appropriate places.

Freq (MHz) Satellite Payload Signal Type Notes
2202.000 Beidou 5
(Beidou 5 (2A))

2007-011A
31115
Navigation satellite Carrier plus multiple sidebands Probably no longer transmitting - initially tracked from Europe but line of sight lost as it approached the operational location near 140° east
2202.447 Sicral

2001-005A
26694
Geosynchronous comsat at 16° east longitude CW carrier plus sub-carriers at 293kHz and 297 kHz Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2202.507 USA 32
(Singleton 1)

1988-078A
19460
Electronic Intelligence Gathering similar to USA-81 CW carrier plus side-bands Also transmits at 2282.503 MHz but transmissions at the two frequencies are not always simultaneous
2202.530 USA 81
(Singleton 3)

1992-023A
21949
Electronic Intelligence Gathering similar to USA-32 CW carrier plus side-bands Frequency Information contributed by the late Ivan Artner, also transmits at 2257.530 MHz, no longer active
2204.400 CBERS 2B

2007-042A
32062
Remote sensing CW carrier plus data sidebands China Brazil Earth Resources Satellite - also transmits 180.013 MHz and 480.033 MHz
2205.328 Telecom 2D

1996-044B
24209
Geosynchronous comsat at 8° west longitude CW carrier plus side-bands Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2207.130 Telecom 2C

1995-067A
23730
Geosynchronous comsat at 3° east longitude CW carrier plus side-bands Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2207.487 GFO

1998-007A
25157
Oceanography - wave height measurement CW carrier plus side-bands Geosat Follow On - Also transmitted at 150.012 MHz and 400.032 MHz. Ceased to transmit 2208 November.
2207.500 AMS 2
(DMSP 5D F-2)

1977-044A
10033
Military meteorological satellite - unspecified secondary payloads CW carrier plus side-bands Advanced Meteorological Satellite - Also transmits at 2237.5MHz and 2252.5 MHz - Frequency Information contributed by the late Ivan Artner
2209.795 Huan Jing 1B
(HJ-1B)

2008-041B
33321
Disaster monitoring within China CW plus data sidebands Part of constellation
2212.504 Coriolis

2003-001A
27640
Oceanographic and geomagnetic studies CW carrier plus side-bands Also transmits at 2222.528 MHz
2212.810 Yaogan 1

2006-015A
29092
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar CW carrier (+sidebands?) Does not transmit on all passes - European observations are on southbound passes (these occur between passes over the PRC mainland)
2212.810 Yaogan 3

2007-055A
32289
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar CW carrier (+sidebands?) Does not transmit on all passes - European observations are on southbound passes (these occur between passes over the PRC mainland)
2217.500 STS ISS Crew/payload transport CW carrier plus side bands carrying data Integrated voice and data on SGLS Channel 4 - transmitter operates almost continuously while the payload bay doors are open, also transmits at 259.7 MHz
2222.481 USA 172
(DMSP 5D-3 F-16)

2003-048A
28054
Military meteorological satellite - unspecified secondary payloads CW carrier plus side-bands Defense Meteorological Satellite Program - Also transmits at 2237.5 MHz and 2247.5 MHz
2222.497 USA 191
(DMSP 5D-3 F-17)

2006-050A
29522
Military meteorological satellite - unspecified secondary payloads CW carrier plus side-bands Defense Meteorological Satellite Program - Also transmits at 2237.515 MHz and (according to observations by the late Ivan Artner) at 2249.415 MHz
2222.500 USA 173 P/L 1
(NOSS 3-2 leader)

2003-054A
28095
Navy Ocean Surveillance System SIGINT CW carrier plus side-bands Navy Ocean Surveillance System - Also transmits at 2232.5 MHz. Frequency Information contributed by the late Ivan Artner
2222.500 USA 181 P/L 1
(NOSS 3-3 leader)

2005-004A
28537
Navy Ocean Surveillance System SIGINT CW carrier plus side-bands Navy Ocean Surveillance System - also transmits at 2232.5 MHz and 2277.5 MHz - Frequency Information contributed by the late Ivan Artner
2222.502 USA 69
(Lacrosse 2)

1991-017A
21147
Military radar reconnaissance satellite CW carrier plus side-bands Frequency Information contributed by the late Ivan Artner
2222.502 USA 133
(Lacrosse 3)

1997-064A
25017
Military radar reconnaissance satellite CW carrier plus side-bands Frequency Information contributed by the late Ivan Artner
2222.528 Coriolis

2003-001A
27640
Oceanographic and geomagnetic studies CW carrier plus side-bands Frequency Information contributed by the late Ivan Artner, also transmits at 2212.504 MHz
2224.065 Shenzhou 7

2008-047A
33386
Piloted spacecraft CW carrier plus side-bands PRC piloted spacecraft - frequency first detected during the Shenzhou 7 mission (2008 September) by Richard Flagg, Hawaii USA - transmission is probably continuous while in orbit
2227.476 NATO 4B

1993-076A
22921
Geosynchronous comsat at 35° east longitude CW carrier plus side-bands Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2227.481 NATO 4A

1991-001A
21047
Miltary geosynchronous comsat at 18° west longitude PSK with sub-carrier, 1024 kHz Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2227.487 Skynet 4C

1990-079A
20776
Miltary geosynchronous comsat at 1° west longitude CW carrier plus side-bands Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2227.497 Skynet 4E

1999-009B
25639
Miltary geosynchronous comsat at 53° east longitude CW carrier plus side-bands Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2227.508 Skynet 4D

1998-002A
25134
Miltary geosynchronous comsat at 34° west longitude CW carrier plus side-bands Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2227.514 Skynet 4F

2001-005B
26695
UK miltary and government comsat at 6° east longitude CW carrier plus side-bands Geosynchronous orbit -
2232.495 USA 118
(Mercury 2)

1996-026A
23855
Multi-tasking military satellite at 13° west longitude? CW carrier plus side-bands geosynchonous orbit - Frequency Information contributed by the late Ivan Artner
2232.495 USA 160 P/L 1
(NOSS 3-1 leader)

2001-040A
26905
Navy Ocean Surveillance System - ocean SIGINT CW carrier plus side-bands Transmision may be from 26907 (NOSS3-1 follower). Also reported to transmit 2277.5 MHz
2232.496 USA 105
(Mercury 1)

1994-054A
23223
Multi-tasking military satellite at 41° west longitude? CW carrier plus side-bands geosynchonous orbit - Frequency Information contributed by the late Ivan Artner
2232.497 USA 159
(DSP F-21)

2001-033A
26880
Geosynchronous missile early warning at 70° east longitude FM wide-bandwidth data Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner
2232.498 USA 149
(DSP F-20)

2000-024A
26356
Geosynchronous missile early warning at 8°.5 east longitude FM wide-bandwidth data Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner
2232.498 USA 173 P/L 1
(NOSS 3-2 leader)

2003-054A
28095
Navy Ocean Surveillance System - ocean SIGINT CW carrier plus side-bands Transmission may be from 28097 (NOSS 3-2 follower). Also reported to transmit at 2222.5 MHz
2232.500 USA 181 P/L 1
(NOSS 3-3 leader)

2005-004A
28537
Navy Ocean Surveillance System SIGINT CW carrier plus side-bands Transmission may be from 28541 (NOSS 3-3 follower), also reported to transmit at 2222.5 MHz and 2277.5 MHz - latter frequency Information contributed by the late Ivan Artner
2232.500 USA 194 P/L 1
(NOSS 3-4 leader)

2007-027A
31701
Navy Ocean Surveillance System - ocean SIGINT CW carrier + side bands Transmission may be from the NOSS 3-4 follower
2232.504 USA 197
(DSP F-23)

2007-054A
32287
Geosynchronous missile early warning CW carrier plus side-bands Defense Support Program - Frequency Information contributed by Greg Roberts
2232.511 USA 75
(DSP F-16)

1991-080B
21805
Geosynchronous missile early warning at 38° west longitude FM wide-bandwidth data Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner
2232.517 USA 184
(Trumpet 4/NROL-22)

2006-027A
29249
US - military and intelligence CW carrier plus side-bands Also transmits at 2277.5 MHz - Frequency Information contributed by the late Ivan Artner
2234.520 Chang'e 1

2007-051A
32273
Lunar orbiting satellite CW carrier plus data sidebands and secondary carriers - two modes - 2 MHz bandwidth and 256 kHz bandwidth Lunar probe built and launched by the Peoples' Republic of China, originally tracked in HEO and then followed to the Moon - easily detectable with simple equipment; since arrival at the Moon, Chang'e has been transmitting internittently on command from ground stations
2237.480 USA 149
(DSP F-20)

2000-024A
26356
Geosynchronous missile early warning at 8°.5 east longitude PSK with sub-carrier, 1024 kHz Defense Support Program - Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
2237.495 USA 142
(DSP F-19)

1999-017A
25669
Missile early warning CW carrier plus side-bands Defense Support Program, suffered mission failure, satellite stranded in geosynchronous transfer orbit - Frequency Information contributed by the late Ivan Artner
2237.496 USA 75
(DSP F-16)

1991-080B
21805
Geosynchronous missile early warning at 38° west longitude CW carrier plus side-bands Defense Support Program - Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
2237.499 USA 159
(DSP F-21)

2001-033A
26880
Geosynchronous missile early warning at 70° east longitude PSK with sub-carrier, 1024 kHz Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
2237.500 AMS 2
(DMSP 5D F-2)

1977-044A
10033
Military meteorological satellite - unspecified secondary payloads CW - wide sweeping carrier Advanced Meteorological Satellite - Also transmits at 2207.5MHz and 2252.5 MHz
2237.500 USA 131
(DMSP 5D-2 F-14)

1997-012A
24753
Military meteorological satellite - unspecified secondary payloads CW + side-bands Defense Meteorological Satellite Program
2237.510 USA 172
(DMSP 5D-3 F-16)

2003-048A
28054
Military meteorological satellite - unspecified secondary payloads CW - wide sweeping carrier Defense Meteorological Satellite Program - Also transmits at 2222.473 MHz and 2247.415 MHz
2237.515 USA 109
(DMSP 5D-2 F13)

1995-015A
23533
Military meteorological satellite - unspecified secondary payloads CW + side-bands Defense Meteorological Satellite Program
2237.515 USA 191
(DMSP 5D-3 F-17)

2006-050A
29522
Military meteorological satellite - unspecified secondary payloads CW - wide sweeping carrier Defense Meteorological Satellite Program - Also transmits at 2222.5 MHz and 2247.415 MHz
2237.517 USA 147
(DMSP F-15)

1999-067A
25991
Military meteorological satellite with secondary payloads (one is a pair of RADCAL transmitters) CW - wide sweeping carrier Defense Meteorological Satellite Program - Also transmits at 2252.5 MHz, 150.012 MHz and 400.032 MHz (the last two are the RADCAL frequencies)
2237.517 USA 210
(DMSP 5D-3 F-18)

2009-057A
35951
Meteorological observations CW carrier plus sidebands Strong carrier
2237.518 DSP F7
(DSP 9)

1977-007A
9803
DSP - Missile early warning CW carrier plus side-bands Defunct satellite in geosynchronous 'graveyard' orbit - Frequency Information contributed by the late Ivan Artner
2241.500 Delta Launch Vehicle (Second Stage) Satellite launches CW + side-bands Detectable during on-orbit launch vehicle operations at start of satellite mission
2241.600 Huan Jing 1A
(HJ-1A)

2008-041A
33320
Disaster monitoring within China CW plus data side-bands Part of constellation
2242.473 USA 172
(DMSP 5D-3 F-16)

2003-048A
28054
Military meteorological satellite - unspecified secondary payloads CW carrier plus side-bands Defense Meteorological Satellite Program - Also transmits at 2249.415 MHz and 2237.5 MHz - Frequency Information contributed by the late Ivan Artner
2242.482 USA 129
(Improved Crystal/KH-12-3)

1996-072A
24680
US - military and intelligence CW carrier plus side-bands Frequency Information contributed by the late Ivan Artner
2242.482 USA 186
(KH-12-5/Crystal)

2005-042A
28888
US - military and intelligence CW carrier plus side-bands Possible transmission frequency - Frequency Information contributed by the late Ivan Artner
2242.485 Unknown Not known CW (plus sidebands?) Satellite in LEO
2242.486 USA 155
(SDS-3 F1)

2000-080A
26635
US intelligence-related satellite at 10° west longitude, possibly including communications PSK with sub-carrier, 1024 kHz Geosynchronous orbit, Frequency varies according to solar illumination and can occasionally be found as low as 2242.47 MHz - also transmits at 251.325 MHz, 252.675, 258.775 and 268.775 MHz
2242.493 USA 8
(Magnum 1)

1985-010B
15543
Probably signals intelligence gathering, from geosynchronous orbit CW carrier plus side-bands Frequency information from Greg Roberts
2242.495 USA 137
(SDS-2 F5)

1998-005A
25148
US mult--tasking intelligence-gathering and communications satellite CW carrier plus side-bands Part of a constellation of three satellites in highly eccentric orbit (HEO), switches to low power when over the southern hemisphere - Formerly transmitted AFSATCOM signal near 243.7 MHz
2242.496 USA 67
(SDS-2 F2)

1990-097B
20963
Multi-tasking military satellite near 75° east longitude PSK with sub-carrier, 1024 kHz Originally GEO but the orbit has evolved to an inclination of 15° and is slightly elliptical so reception varies according to the sub-satellite latitude - a study by Ivan Artner 2006 March showed that the transmitter responds to eclipse periods by becoming intermittent while out of direct sunlight, indicating that the batteries are not charging properly from the solar cells
2242.498 USA 125
(SDS-2 F4)

1996-038A
23945
US mult--tasking intelligence-gathering and communications satellite CW carrier plus side-bands Formerly part of the operational constellation of three SDS satellites in highly eccentric orbit (HEO) - Also transmits AFSATCOM signal near 243.7 MHz; the S-band transmission from USA-125, an SDS-2 satellite, is at a lower power than the SDS-3 satellites
2242.500 USA 40
(SDS 2 F1/90020 )

1989-061B
20167
US mult--tasking intelligence-gathering and communications satellite CW carrier, oscillates in frequency due to satellite spinning at 5.2s per rev Tentative identification of satellite with received signals - non-operational but still transmitting, the signal oscillation is probably due to the originally de-spun aerial platform having matched rotation with the satellite body - identified as 90020 in classfd.tle
2242.500 USA 89
(SDS 2 F3)

1992-086B
22518
US mult--tasking intelligence-gathering and communications satellite, now deactivated CW carrier plus side-bands During 2006, Ivan Artner tracked a spinning satellite in HEO, the times did not fit known satellites in that type of orbit - it has been tentatively identified as 90026 (last observed in 2004) but transmissions ceased during the first quarter of 2007 before an orbit could be determined, the identification of it as USA-89 is also tentative
2242.500 USA 162
(SDS-3 F2)

2001-046A
26948
US intelligence-related satellite near 144° west longitude, possibly including communications CW carrier (plus side-bands?) Reported frequency for satellite in geosynchronous orbit - also reported to transmit at 250.075 MHz, 256.475, 263.225 and 267.550 MHz
2242.503 USA 179
(SDS-3 F3)

2004-034A
28384
US mult--tasking intelligence-gathering and communications satellite CW carrier plus side-bands - strong Part of a constellation of three satellites in highly eccentric orbit (HEO), switches to low power when over the southern hemisphere - Also transmits at 251.700 MHz and 256.375 MHz
2242.504 USA 198
(SDS-3 F4)

2007-060A
32378
US mult--tasking intelligence-gathering and communications satellite CW carrier plus side-bands - strong Part of a constellation of three satellites in highly eccentric orbit (HEO), lanched 2007 Dec 10 as a replacement for USA-125, the other satellites are USA-137 and USA-179, also transmits at 251.700 MHz and 256.375 MHz - was transmitting at 251.275 and 258.800 MHz during the orbital test phase up to 2008 Mar 13
2242.515 USA 21
(SDS-1 F6/90004)

1987-015A
17506
US mult--tasking intelligence-gathering and communications satellite CW carrier, oscillates in frequency due to satellite spinning at 4.6s per rev Identification very tentative - highly eccentric orbit, non-operational, the signal oscillation is probably due to the originally de-spun aerial platform having matched rotation with the satellite body, probably an SDS-1 satellite (either F4 or F6) - listed in classfd.tle as 90004
2242.517 ASTEX
(P71-2)

1971-089A
5560
Technology experiments Multiple sidebands - very small dispersion Old satellite detected as still transmitting during 2008 March
2247.478 TSX-5

2000-030A
26374
Experiments in advanced spae technologies CW carrier Frequency is unstable, noted as high as 2247.512 MHz, came back on air 2009 November
2247.499 USA 208
(STSS Demo SV1)

2009-052A
35937
Ballistic missile detection tests CW carrier plus sidebands STSS Demonstrators dual satellite mission with USA 209 testing missile detection technology, variation possibly due to internal electrical power loading - see also 2272.5 MHz
2247.500 NOAA 11
(NOAA H)

1988-089A
19531
Metsat Cyclic carrier - approx 4s on then 4s off De-commissioned, faulty transmssion from TIP, detected 2009 Oct, although a frequency in the SGLS - NOAA 11 probably never transmitted SGLS format signals
2247.500 NOAA 19
(NOAA N')

2009-005A
33591
Metsat Data Downlink for TIP data - used during launch and contingency, occasionally heard from orbit and heard to switch on and off, detected 2009 Oct, although a frequency corresponding to SGLS Channel 10, the transmission format is not SGLS
2249.500 USA 193
(NROL-21)

2006-057A
29651
US intelligence-related satellite CW carrier plus side-bands Satellite failed soon after launch 2006 December - no longer transmitting Frequency Information contributed by the late Ivan Artner
2250.000 Oceansat 2

2009-051A
35931
Ocean Studies CW carrier plus sidebands Sun-synchronous orbit, Indian satellite
2252.490 USA 95
(UFO F- 2)

1993-056A
22787
Miltary geosynchronous comsat at 29° east longitude CW carrier plus side-bands Frequency Information contributed by the late Ivan Artner
2252.490 USA 146
(UFO F-10)

1999-063A
25967
Miltary geosynchronous comsat at 72° east longitude PSK with sub-carrier, 1.7 MHz Frequency Information contributed by the late Ivan Artner - co-located so this may be UFO-F11
2252.493 USA 127
(UFO F- 7)

1996-042A
23967
Miltary geosynchronous comsat at 22° west longitude PSK with sub-carrier, 1.7 MHz Frequency Information contributed by the late Ivan Artner
2252.499 USA 147
(DMSP F-15)

1999-067A
25991
Military meteorological satellite with secondary payloads (one is a pair of RADCAL transmitters) CW carrier plus side-bands Defense Meteorological Satellite Program - Also transmits at 2237.5 MHz, 150.012 MHz and 400.032 MHz (the last two are the RADCAL frequencies)
2252.500 AMS 2
(DMSP 5D F-2)

1977-044A
10033
Military meteorological satellite - unspecified secondary payloads CW carrier plus side-bands Advanced Meteorological Satellite - Also transmits at 2207.5 MHz and 2234.5 MHz - Frequency Information contributed by the late Ivan Artner
2252.500 USA 109
(DMSP 5D-2 F13)

1995-015A
23533
Military meteorological satellite - unspecified secondary payloads CW carrier plus side-bands Defense Meteorological Satellite Program, - Frequency Information contributed by the late Ivan Artner
2252.506 USA 207
(PAN)

2009-047A
35815
Communications CW carrier + sidebands Initial reception reported by Greg Roberts (SA) some 38 minutes after lift-off
2257.500 DSCS III F-1
(DSCS III A-1)

1982-106B
13637
USA DoD comsat CW carrier plus side-bands Possibly defunct, in geosynchronous drift orbit - Frequency Information contributed by the late Ivan Artner
2257.508 USA 153
(DSCS III F-12)

2000-065A
26575
Miltary geosynchronous comsat at 12° west longitude PSK with sub-carrier, 1024 kHz Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2257.511 USA 167
(DSCS III F-13)

2003-008A
27691
Miltary geosynchronous comsat at 60° east longitude CW carrier plus side-bands Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2257.512 USA 97
(DSCS III F-8)

1993-074A
22915
Miltary geosynchronous comsat at 57° east longitude CW carrier plus side-bands Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2257.530 USA 81
(Singleton 3)

1992-023A
21949
Electronic Intelligence Gathering similar to USA-32 CW carrier plus side-bands Also transmits at 2202.5 MHz (Frequency Information contributed by the late Ivan Artner) and 258.150 MHz, no longer active
2262.493 USA 46
(FltSatCom F-8)

1989-077A
20253
Miltary geosynchronous comsat at 15°.5 west longitude PSK with sub-carrier, 1024 kHz Frequency Information contributed by the late Ivan Artner
2262.499 USA 174
(UFO F-11)

2003-057A
28117
Miltary geosynchronous comsat at 72° east longitude PSK with sub-carrier, 1.7 MHz Frequency Information contributed by the late Ivan Artner - co-located so this may be UFO-F10
2262.507 USA 164
(Milstar 5)

2002-001A
27168
Miltary geosynchronous comsat at 28°.5 east longitude CW carrier plus side-bands Also transmits 2267.513 MHz, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2262.509 USA 99
(Milstar 1)

1994-009A
22988
Miltary geosynchronous comsat at 39° west longitude CW carrier plus side-bands Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2263.600 Kaguya
(Selene)

2007-039A
32054
Lunar orbiting satellite CW Carrier plus side-bands Japanese built and launched lunar probe - easily detectable, can be observed locking-on to, and releasing, the uplink as it appears or disappears at the lunar limb - transmission appears to be continuous
2264.725 QuikScat

1999-034A
25789
Ocean surface wind measurement using radar CW + sidebands Stop-gap mission launched to cover for a similar instrument aboard NSCAT, strong signal
2267.513 USA 164
(Milstar 5)

2002-001A
27168
Miltary geosynchronous comsat at 28°.5 east longitude CW carrier plus side-bands Occasional transmission - Also transmits 2262.507 MHz MHz, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
2272.514 USA 209
(STSS Demo SV2)

2009-052B
35938
Ballistic missile detection tests CW carrier plus sidebands STSS Demonstrators dual satellite mission with USA 208 testing missile detection technology, frequency is not fixed, variation possibly due to internal electrical power loading - see also 2247.5 MHz
2273.520 Haiyang 1B

2007-010A
31113
Oceanic Remote Sensing CW plus data sidebands Weak
2277.485 OPS 4029
(Vortex 3)

1981-107A
12930
Multi-tasking military satellite at 41° west longitude? CW carrier plus side-bands Geosynchronous orbit Frequency Information contributed by the late Ivan Artner
2277.500 USA 78
(DSCS III F-5)

1992-006A
21873
USA DoD comsat CW carrier plus side-bands Defunct satellite in geostationary drift orbit - Frequency Information contributed by the late Ivan Artner
2277.500 USA 105
(Mercury 1)

1994-054A
23223
Multi-tasking military satellite at 27°.5 west longitude CW carrier plus side-bands Frequency Information contributed by the late Ivan Artner
2277.500 USA 160 P/L 1
(NOSS 3-1 leader)

2001-040A
26905
Navy Ocean Surveillance System - ocean SIGINT CW carrier plus side-bands Navy Ocean Surveillance System - Frequency Information contributed by the late Ivan Artner, also transmits at 2232.495 MHz
2277.500 USA 181 P/L 1
(NOSS 3-3 leader)

2005-004A
28537
Navy Ocean Surveillance System SIGINT CW carrier plus side-bands Navy Ocean Surveillance System, also transmits at 2222.5 MHz and 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
2277.520 USA 184
(Trumpet 4/NROL-22)

2006-027A
29249
US intelligence-related satellite CW carrier plus side-bands Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
2282.500 MSX

1996-024A
23851
Experiments satellite AM - 1 kHz tone Midcourse Space Experiment, infrared sources with a view to improved design of missile detecting sensors - Frequency Information contributed by the late Ivan Artner
2282.500 AIM
(Aeronomy of Ice in the Mesosphere)

2007-015A
31304
NASA - atmospheric studies FM Indistinct lines when viewed with SDR and software
2282.503 USA 32
(Singleton 1)

1988-078A
19460
Electronic Intelligence Gathering similar to USA-81 CW carrier plus side-bands Observed to switch on and off and does not transmit every rev - at least while over Europe, also transmits 2202.507 MHz but transmissions at the two frequencies are not always simultaneous
2286.001 Cosmos 2422
(OKO)

2006-030A
29260
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmits at 2292.001 MHz, operates only above the northern hemisphere
2292.001 Cosmos 2422
(OKO)

2006-030A
29260
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmits at 2298.001 MHz, operates only above the northern hemisphere
2298.000 Cosmos 2388
(OKO)

2002-017A
27409
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmitted at at 2298.0 MHz - ceased to operate 2006 November
2298.000 Cosmos 2393
(OKO)

2002-059A
27613
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmitted at 2286.0 MHz - ceased to operate 2007 March
2298.000 Cosmos 2430
(Oko US-KS?)

2007-049A
32268
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmits at 2304.0 MHz, operates only above the northern hemisphere
2298.000 Cosmos 2446
(73D6/US-KS/OKO)

2008-062A
33447
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmits at 2304.000 MHz, operates only above the northern hemisphere
2304.000 Cosmos 2388
(OKO)

2002-017A
27409
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmitted at 2298.0 MHz - ceased to operate 2006 November
2304.000 Cosmos 2393
(OKO)

2002-059A
27613
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmitted at 2286.0 MHz - ceased to operate 2007 March
2304.000 Cosmos 2430
(Oko US-KS?)

2007-049A
32268
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmits at 2298.0 MHz, operates only above the northern hemisphere
2304.000 Cosmos 2446
(73D6/US-KS/OKO)

2008-062A
33447
Missile early warning satellite CW carrier plus side-bands OKO satellite in highly eccentric orbit - Also transmits at 2298.000 MHz, operates only above the northern hemisphere
 

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Consolidation of individual mission diaries from the site (and more!)

Ongoing Calendar of comings and goings in space

People, reminiscences and tracking equipment

Korolyov's efforts in getting the first satellite into orbit

The Soviet Union's programme of automatic exploration

First pilot to orbit the Earth

Soviet programme to put multiple passengers into space

First docking in orbit of piloted spacecraft

First docking of piloted spacecraft from different nations

Chronology of missions to the first space stations

Detailed calendar of launches and activities in orbit

Mission calendar for the early years

Zarya Web Site © Robert Christy, 2000 - 2010