Zarya - Soviet, Russian and International Spaceflight
Satellite Radio Frequencies

Lincoln, UK
2010 Feb 9, UTC
Tuesday
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Frequency lists by Maik Hermenau

Frequency lists
Satellite and Spacecraft Radio Transmission Frequencies

If you are interested in tracking satellites by radio, this frequency list should prove useful. It includes satellites and spacecraft tracked from the Zarya home location, with additional tracking information from other observers that is credited appropriately. Some of the frequencies have been used by past satellites but generally only transmissions logged since the year 2000 are listed here. An exception is the listing of some historic frequencies.

Specifically excluded from being listed are amateur radio satellites (eg Amsat OSCAR satellites and the Soviet/Russian 'Radio' series), and the US military satellite (milsat) point-to-point communications transponders, aboard certain geosynchronous satellites, that can be found near 250 MHz. Information on these can be found on amateur radio web sites and more-general military radio sites.

Where a satellite name is shown as "Object xxxx", it refers to the pseudo calalogue number listed in Mike McCants's "classified.tle" file. The incidence of these is becoming less as more satellites are becoming identified through radio and optical tracking.

In the menu on the left are some selective versions of the list for satellites in particular categories. There is also a list covering the now-defunct HF frequencies from earlier times in the space age. HF frequencies do not appear in the main table below.

Zarya is located at Lincoln, UK: 53°.2233 North, 0°.6004 West.

Freq (MHz) Satellite Payload Signal Type Notes
121.750 Progress M-42
(Progress 7K-TGM No 242)

1999-038A
25858
Mir/ISS Logistics Ranging pulses Used by TORU remote control docking system as the return signal path to ISS (see also 130.167 MHz for the ISS transmission) - Also transmits at 166 MHz and 922.763 MHz
121.750 Progress M1-2
(Progress M1 No252)

2000-021A
26301
Mir/ISS Logistics Ranging pulses Used by TORU remote control docking system as the return signal path to ISS (see also 130.167 MHz for the ISS transmission) - Also transmits at 166 MHz and 922.763 MHz
121.750 Soyuz TMA-1
(Soyuz 11F732 No211)

2002-050A
27552
ISS Crew transport Medium bandwidth FM voice Frequency used during on-orbit operations to and from the Space Station, and reportedly used for recovery beacon during landing module descent - Also transmits at 166 MHz and 922.763 MHz
130.167 ISS
(International Space Station)

1998-067A
25544
Space Station Medium bandwidth FM voice VHF-2 channel used as an alternative to VHF-1 (143.625 MHz) during Shuttle/ISS on-orbit operations
130.167 ISS
(International Space Station)

1998-067A
25544
Space Station Ranging pulses Used by TORU remote control docking system, usually tested 1-2 days before a Progress docking is due, the Progress return path is at 121.750 MHz
136.235 Tiros 10

1965-051A
1430
Meteorology AM - 1.3 kHz tone Payload now inactive, radio transmission is not continuous - (information contributed by Michael D Kenny)
136.260 ERS 20
(OV5-3)

1967-040D
2768
USAF test satellite AM - tone (unstable) High orbit, visible for long periods of time - (information contributed by Michael D Kenny)
136.410 Isis 1

1969-009A
3669
Ionosphere studies CW (information contributed by Michael D Kenny)
136.440 ERS 15
(NORAD lists as Secor 7)

1966-077C
2412
Military satellite AM with 1.3 kHz tone Incorrectly catalogued by NORAD as SECOR 7 - (information contributed by Michael D Kenny)
136.500 Nimbus 4
(Nimbus D)

1970-025A
4362
Meteorology (including imaging) CW - sometimes modulated Payload no longer operational - (information contributed by Michael D Kenny)
136.650 NNS O-2
(Oscar O-2)

1964-083D
965
Navigation CW Carrier plus telemetry tones Second operational TRANSIT navsat, navigation system failed soon after launch but transmitter is still active (information contributed by Michael D Kenny)
136.695 Shinsei
(MS-F2)

1971-080A
5485
Japanese scientific satellite CW Continuous transmission - (information contributed by Michael D Kenny)
136.770 NOAA 9
(NOAA F)

1984-123A
15427
Formerly meteorological imaging CW Telemetry frequency, transmission is intermittent - (information contributed by Michael D Kenny) - Also has a transmission at 137.500 MHz
136.800 Solrad 7B
(SR 7B)

1965-016D
1291
Solar radiation studies (launched 1969) AM IRIG telemetry channels Continuous transmission - (information contributed by Michael D Kenny)
137.080 OPS 7898-2
(NOSS B1?)

1971-110C
5680
US military satellite CW (information contributed by Michael D Kenny)
137.100 NOAA 18
(NOAA N)

2005-018A
28654
Meteorological imaging APT at 4 lines per second - interlaced visible light and infrared images Revised frequency as of 2006 Jan 4, changed from 137.9125 MHz
137.142 Eutelsat I F4
(ECS 4)

1987-078B
18351
Defunct comsat CW Regular, intermittent signal possibly due to vehicle rotation causing periodic flow of power from solar panels
137.200 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz
137.225 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz
137.250 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz
137.300 Russian Imaging Meteorological imaging APT at 2 lines per second Frequency not currently active
137.350 NOAA 15
(NOAA K)

1998-030A
25338
Meteorological imaging CW Doppler Beacon and telemetry Continuous transmission -(information contributed by Michael D Kenny) - Also transmits at 137.500 MHz
137.350 NOAA 16
(NOAA L)

2000-055A
26536
Formerly meteorological imaging CW Doppler Beacon and telemetry Continuous transmission -(information contributed by Michael D Kenny) - Also transmits at 137.500 MHz
137.350 Compass 2

2006-019A
29157
Russian scientific satellite studying possible ways of predicting earthquakes - not operating properly CW/AM After launch on 2006 May 26 - bursts of CW tone one to ten seconds duration in groups with peaks at central frequency and +/- 64 kHz - As of 2006 Nov 16 - data transmission at 64 kHz side bands only
137.380 OPS 7613-1
(NRL PL176)

1969-082B
4256
Navigation technology Mixed modulation (PAM/FM/AM) (information contributed by Michael D Kenny)
137.400 Russian Imaging Meteorological imaging APT at 2 lines per second Frequency not currently active
137.410 OPS 7613-6
(NOSS A1?)

1969-082E
4237
USAF test satellite CW (information contributed by Michael D Kenny)
137.440 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies, individual satellites switch between them - Also transmits at 400.100 MHz
137.460 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies, individual satellites switch between them - Also transmits at 400.100 MHz
137.500 Tiros-N

1978-096A
11060
Meteorological imaging CW - carrier only Inactive satellite but reportedly transmitting
137.500 NOAA 6
(NOAA A)

1979-057A
11416
Meteorological imaging CW - carrier only Inactive satellite but reportedly transmitting
137.500 NOAA 9
(NOAA F)

1984-123A
15427
Formerly meteorological imaging Tone for 6 seconds out of every 25 seconds (periods vary - these are averages) Non-operational satellite but transmitter still had power long after the payload was switched off - Timings shown are as of 2001 January 6 - Probably no longer transmitting at this frequency - Also has a transmission at 136.770 MHz
137.500 NOAA 12
(NOAA D)

1991-032A
21263
Meteorological imaging APT at 4 lines per second - interlaced visible light and infrared images Switched off occasionally when transmissions conflict with those from NOAA 15 - Also transmits at 137.770 MHz - De-commissioned 2007 Aug 10
137.500 NOAA 15
(NOAA K)

1998-030A
25338
Meteorological imaging APT at 4 lines per second - interlaced visible light and infrared images Switched off occasionally when transmissions conflict with those from NOAA 12 - Also transmits at 137.350 MHz
137.625 NOAA 14
(NOAA 14)

1994-089A
23455
Meteorological imaging APT at 4 lines per second - interlaced visible light and infrared images Switched off occasionally when transmissions conflict with those from NOAA 17 - Also transmits at 137.770 MHz - Decommissioned 2007 May 23
137.625 NOAA 17
(NOAA M)

2002-032A
27453
Meteorological imaging APT at 4 lines per second - interlaced visible light and infrared images Switched off occasionally when transmissions conflict with those from NOAA 14
137.663 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
137.688 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
137.713 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
137.738 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
137.770 NOAA 11
(NOAA H)

1988-089A
19531
Formerly meteorological imaging CW Doppler Beacon and telemetry Continuous transmission when operational - (information contributed by Michael D Kenny) - De-commissioned 2004 June 16
137.770 NOAA 12
(NOAA D)

1991-032A
21263
Meteorological imaging CW Doppler Beacon and telemetry Also transmitted at 137.500 MHz - De-commissioned 2007 Aug 10
137.770 NOAA 14
(NOAA 14)

1994-089A
23455
Meteorological imaging CW Doppler Beacon and telemetry Also transmits at 137.625 MHz - Decommissioned 2007 May 23
137.770 NOAA 17
(NOAA M)

2002-032A
27453
Meteorological imaging CW Doppler Beacon and telemetry Also transmits at 137.625 MHz
137.800 Orbcomm Mobile telephony Digitised telephone traffic One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
137.850 Russian Imaging Meteorological imaging APT at 2 lines per second Frequency not currently active
137.913 NOAA 18
(NOAA N)

2005-018A
28654
Meteorological imaging APT at 4 lines per second - interlaced visible light and infrared images Frequency probably not active - changed to 137.100 MHz (2006 Jan 4?)
143.625 ISS
(International Space Station)

1998-067A
25544
Space Station Medium bandwidth FM voice VHF-1 channel, also used to relay Mission Control to the Shuttle - used as part of the ISS Early Communications System over the USA working with the Wallops Facility and White Sands, detected carrying packet data transmissions during Expedition 1
145.800 ISS
(International Space Station)

1998-067A
25544
Space Station Amateur Radio downlink frequency Amateur radio downlink - see NASA's ARISS Page
145.825 ISS
(International Space Station)

1998-067A
25544
Space Station Amateur Radio downlink frequency Amateur radio downlink - see NASA's ARISS Page
145.990 Suitsat
(Orlan-M No14)

2005-035C
28933
Amateur radio experiment - life expired Orlan spacesuit equipped with a radio transmitter and released from ISS during a crew EVA NFM - extremely weak Voice recording + SSTV image - the low power was due to a failed amplifier - Released from ISS 2006 Feb 3 and battery exhausted 2006 Feb 18
149.910 Cosmos 2341
(Parus)

1997-017A
24772
Comms FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Transmission contains an almanac for all active satellites in the constellation - Use for navigation has probably ceased but is still supporting whatever other system requires reasonably precise positional information for the satellites - Coherent transmission at 399.920 MHz
149.910 Cosmos 2398
(Parus)

2003-023A
27818
Comms FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Transmission contains an almanac for all active satellites in the constellation - Use for navigation has probably ceased but is still supporting whatever other system requires reasonably precise positional information for the satellites - Coherent transmission at 399.760 MHz
149.940 Cosmos 2378
(Parus)

2001-023A
26818
Comms FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Transmission contains an almanac for all active satellites in the constellation - Use for navigation has probably ceased but is still supporting whatever other system requires reasonably precise positional information for the satellites - Coherent transmission at 399.840 MHz
149.970 Cosmos 2336
(Parus)

1996-071A
24677
Comms FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Transmission contains an almanac for all active satellites in the constellation - Use for navigation has probably ceased but is still supporting whatever other system requires reasonably precise positional information for the satellites - Coherent transmission at 399.840 MHz
149.970 Cosmos 2389
(Parus)

2002-026A
27436
Comms FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Transmission contains an almanac for all active satellites in the constellation - Use for navigation has probably ceased but is still supporting whatever other system requires reasonably precise positional information for the satellites - Coherent transmission at 399.920 MHz
149.979 Oscar 29
(Transit/NIMS)

1987-080B
18362
Ionospheric modelling for US military (NIMS) Modulated CW carrier Maintenance frequency - Coherent transmission at 399.944 MHz (has been heard to transmit tones similar to the other OSCAR satellite but 2003 December 28 - this frequency was occupied by a modulated 'buzzing' signal - No longer transmitting as of 2008 Feb 1
149.979 Oscar 31
(Transit/NIMS)

1988-074B
19420
Ionospheric modelling for US military (NIMS) FM telemetry (tones) +/- 2.4 kHz from carrier Maintenance frequency - Coherent transmission at 399.944 MHz - Occasionally changes between this frequency and the operational one - Sometime between 2007 Dec 21 and 2008 Feb 7, the normal transmissions at both frequencies were replaced with a highly unstable CW carrier (wandering frequency + variations in strength)
149.988 Oscar 27
(Transit/NIMS)

1987-080A
18361
Ionospheric modelling for US military (NIMS) FM telemetry (tones) +/- 2.4 kHz from carrier Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one) - No longer transmitting as of 2008 Jan 1
149.988 Oscar 23
(Transit/NIMS)

1988-033A
19070
Ionospheric modelling for US military (NIMS) FM telemetry (tones) +/- 2.4 kHz from carrier Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one)
149.988 Oscar 32
(Transit/NIMS)

1988-033B
19071
Ionospheric modelling for US military (NIMS) FM telemetry (tones) +/- 2.4 kHz from carrier Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one)
149.988 Oscar 25
(Transit/NIMS)

1988-074A
19419
Ionospheric modelling for US military (NIMS) FM telemetry (tones) +/- 2.4 kHz from carrier Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one)
150.000 Nadezhda Navigation - plus Search and Rescue monitoring FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Several satellites - the system is no longer operational, has been silent since 2003 November 26 - Coherent transmission at 400.000 MHz
150.000 Tsikada Navigation - plus Search and Rescue monitoring FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Several satellites - the system is no longer operational, has been silent since 2003 November 26 - Coherent transmission at 400.000 MHz
150.012 Unknown Not known 'Wandering' CW Satellite in GEO, possibly graveyard orbit, also transmits 400.032 MHz
150.012 Geosat

1985-021A
15595
Oceanography - wave height measurement CW - Doppler tracking beacon Detected being switched on and off over Europe, not continuously active. Sometime around 2007, transmissions ceased to be detected but Geosat was subsequently determined to be transmitting continuously while in sunlight. Coherent transmission at 400.032 MHz
150.012 RADCAL
(STEP P92-1)

1993-041A
22698
Radar calibration CW - Doppler tracking beacon Radar Calibration satellite - Coherent transmission at 400.032 MHz, operation is intermittent
150.012 GFO

1998-007A
25157
Oceanography - wave height measurement CW - Doppler tracking beacon Geosat Follow On satellite - Coherent transmission at 400.032 MHz and also transmitted at 2207.5 MHz. Ceased to transmit 2208 November.
150.012 ARGOS
(STEP P91-1)

1999-008A
25634
USAF space experiments CW - Doppler tracking beacon Coherent transmission at 400.032 MHz - Ceased to transmit 2003
150.012 USA 147
(DMSP F-15)

1999-067A
25991
RADCAL secondary payload aboard US military metsat CW - Doppler tracking beacon Defense Meteorological Satellite Program - Also transmits at 2237.5 MHz and 2252.5 MHz, and 400.032 MHz - Post-launch testing revealed interference with other equipment from the 150/400 MHz transmitters so they remained inactive (apart from further testing) until 2006 Aug 14
150.012 Picosat 9
(STEP P97-1)

2001-043B
26930
USAF Space Test Program (STEP) CW - Doppler tracking beacon Coherent transmission at 400.032 MHz - Ceased to transmit late-2004
150.030 Cosmos 2361
(Parus)

1998-076A
25590
Navigation (+ comms?) FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Coherent transmission at 400.080 MHz
150.300 Cosmos 2373
(Yantar-1KFT11Ф660 №20, Kometa)

2000-058A
26552
Yantar/Cometa' recoverable satellite - photographic mapping AM telemetry - wide bandwidth Coherent transmission at 400.800 MHz - Cameras and film recovered after mission running between 2000 September 29 and 2000 November 14 - no longer in orbit
150.300 Cosmos 2415
(Yantar-1KFT11Ф660 №21, Kometa)

2005-034A
28841
Yantar/Cometa' recoverable satellite - wide-area photographic reconnaissance CW - Doppler tracking beacon Coherent transmission at 400.800 MHz - Cameras and film recovered after mission mission running between 2005 September 2 and 2005 October 14 - transmissions heard over the USA - no longer in orbit
166.000 Progress M-42
(Progress 7K-TGM No 242)

1999-038A
25858
Mir/ISS Logistics FM telemetry - sidebands at +/- 128 kHz Transmits during on-orbit operations to and from the ISS, and while docked with the space station - The transmission sounds as a loud buzz with sharp peaks at the sideband frequencies - Also transmits at 922.763 MHz
166.000 Progress M1-2
(Progress M1 No252)

2000-021A
26301
Mir/ISS Logistics FM telemetry - sidebands at +/- 128 kHz Transmits during on-orbit operations to and from the ISS, and while docked with the space station - The transmission sounds as a loud buzz with sharp peaks at the sideband frequencies - Also transmits at 922.763 MHz
166.000 Soyuz TMA-1
(Soyuz 11F732 No211)

2002-050A
27552
ISS Crew transport FM telemetry - sidebands at +/- 128 kHz Transmits during on-orbit operations to and from the ISS, and while docked with the space station - The transmission sounds as a loud buzz with sharp peaks at the sideband frequencies - Also transmits at 121.750 MHz and 922.763 MHz
179.951 Zi Yuan 2
(Jiang Bing 3A)

2000-050A
26481
Remote Sensing CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz Coherent transmission at 479.865 MHz
180.006 Fengyun 1C

1999-025A
25730
Meteorological imaging CW carrier on centre frequency plus telemetry sidebands at +/- 5 kHz- and further carriers at +/- 10 kHz Active transmitter until 2007 February when attacked in ground-based interceptor test - Coherent transmission at 480.017 MHz
180.007 Fengyun 1D

2002-024B
27431
Meteorological Imaging CW carrier on centre frequency plus telemetry sidebands at +/- 5 kHz- and further carriers at +/- 10 kHz Coherent transmission at 480.017 MHz
180.011 CBERS 1

1999-057A
25940
Remote sensing CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz - and further carriers at +/- 40 kHz China Brasil Earth Resources Satellite - Coherent transmission at 480.025 MHz - Silent since mid 2003, the last public report being 2003 Jun 6 by Maik Hermenau of www.satellitenwelt.de
180.013 CBERS 2B

2007-042A
32062
Remote sensing CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz China Brazil Earth Resources Satellite - Coherent transmission at 480.033 MHz, also transmits 2204.400 MHz
180.014 CBERS 2

2003-049A
28057
Remote sensing CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz China Brazil Earth Resources Satellite - Coherent transmission at 480.037 MHz, ceased to transmit 2007
243.695 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 1 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.695 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 1 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.705 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 2 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.705 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 2 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.710 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 3 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.710 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 3 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.715 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 4 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.715 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 4 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.720 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 5 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.720 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 5 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.725 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 6 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.725 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 6 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.730 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 7 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.730 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 7 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.735 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 8 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.735 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 8 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.740 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms Channel usually occupied by an unmodulated carrier AFSATCOM Channel 9 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.740 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms Channel usually occupied by an unmodulated carrier AFSATCOM Channel 9 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.745 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 10 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.745 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 10 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.750 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 11 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.750 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 11 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.760 USA 125
(SDS-2 F4)

1996-038A
23945
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 12 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - 2007 Oct 15, USA-125 ceased to transmit AFSATCOM
243.760 USA 137
(SDS-2 F5)

1998-005A
25148
Military quick reaction comms CW - RTTY-style data AFSATCOM Channel 12 transmission - 2005-2007, USA-137 and USA-125 were providing alternating coverage of the northern hemisphere from HEO - Second transmission frequency at 2242.50 MHz - Early in 2007, USA-137 ceased to transmit AFSATCOM but it was back on air early 2008
243.825 USA 99
(Milstar 1)

1994-009A
22988
USA Military communications from geosynchronous orbit Spread spectrum signal - +/- 64 kHz from centre frequency Tentative identification (may be more than one satellite) in geosynchronous orbit, can be heard with relatively simple receiver/antenna setup - in CW mode, it sounds like trickling water!
244.512 Cosmos 2353
(Strela-3)

1998-036B
25364
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - entry updated Mar 8
244.512 Cosmos 2385
(Strela-3)

2001-058B
27056
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - entry updated Mar 8
244.512 Gonets D1-8
(Strela-3)

2001-058E
27059
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - this is a Strela 3, NORAD has switched the identities of a Strela-3 and a Gonets from the same launch vehicle - entry updated 2009 Mar 8
244.512 Cosmos 2390
(Strela-3)

2002-036A
27464
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - entry updated Mar 8
244.512 Cosmos 2391
(Strela-3)

2002-036B
27465
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - entry updated Mar 8
244.512 Cosmos 2400
(Strela-3)

2003-037A
27868
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - entry updated Mar 8
244.512 Cosmos 2401
(Strela-3)

2003-037B
27869
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - entry updated Mar 8
244.512 Cosmos 2437
(Strela-3)

2008-025B
32954
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - entry updated Mar 8
244.512 Cosmos 2438
(Strela-3)

2008-025C
32955
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - entry updated Mar 8
244.512 Cosmos 2439
(Strela-3)

2008-025D
32956
Store-dump comms (military) FM - mutiple sideband, 0.5s trigger signal every minute Trigger pulse for ground-based transmitters, received messages are re-transmitted at 261.035 - noted 2009 early March but not active mid-July
250.075 USA 162
(SDS-3 F2)

2001-046A
26948
US intelligence-related satellite near 144° west longitude, possibly including communications AM - 4.8 kHz data tone One of a triplet of reported frequencies carrying similar signals from satellite in geosynchronous orbit, exact frequency not known - also reported to transmit at 256.475, 263.225, 267.550 MHz and 2242.5 MHz
250.150 USA 76
(NOSS 2-2)

1991-076D
21808
US Military ocean surveillance CW carrier detectable at 250.158 MHz then a series weaker carriers up and down from this frequency at 9.6 kHz intervals between approximate limits of 250.0 and 250.25 MHz Navy Ocean Surveillance System, transmission is probably from a secondary payload - Transmission intermittent - First reported 2005 September then went into a period of silence - (the listed satellite is one of a cluster)
250.158 USA 122
(NOSS 2-3)

1996-029D
23862
US Military ocean surveillance AM - 4.8 kHz data tone Navy Ocean Surveillance System, transmission is probably from a secondary payload and is on for extended periods - no reports of any switch on/off activity - (the listed satellite is one of a cluster)
251.275 USA 198
(SDS-3 F4)

2007-060A
32378
US intelligence-related satellite - possibly including communications AM - 4.8 kHz data tone plus various test modes One of a pair of transmissions from a secondary payload on US classified satellite in HEO used during the test phase of the satellite up until 2008 March 13 - on March 14, USA-198 switched to its operational frequencies at 251.700 MHz and 256.375 MHz, sharing duties with USA-179 - Test transmission also at 258.800 MHz, plus transmitter at 2242.50 MHz
251.325 USA 155
(SDS-3 F1)

2000-080A
26635
US intelligence-related satellite near 10° west longitude, possibly including communications AM - 4.8 kHz data tone One of a triplet of similar of transmissions from a secondary payload on a US classified satellite in GEO, signal appears to be continuous and is similar to ones from USA-179 - Also transmits at 252.675 MHz, 258.775 MHz, 268.6755 MHz and 2242.486 MHz
251.700 USA 179
(SDS-3 F3)

2004-034A
28384
US intelligence-related satellite, possibly including communications AM - 4.8 kHz data tone One of a pair of transmissions from a secondary payload on US classified satellite in HEO - Switched on and off to co-ordinate coverage with USA-198 - Prior to 2008 Mar 14, USA-179 was operating alone and was providing near 8 hours' coverage per pass at this frequency - Also transmits at 256.375 MHz and 2242.50 MHz
251.700 USA 198
(SDS-3 F4)

2007-060A
32378
US intelligence-related satellite, possibly including communications AM - 4.8 kHz data tone One of a pair of transmissions from a secondary payload on US classified satellite in HEO - Switched on and off to co-ordinate coverage with USA-179 - Also transmits at 256.375 MHz and 2242.50 MHz
252.675 USA 155
(SDS-3 F1)

2000-080A
26635
US intelligence-related satellite near 10° west longitude, possibly including communications AM - high speed (19.2 kb/s?) data transmission Transmissions from a secondary payload on a US classified satellite in GEO, signal appears to be continuous - Also transmits at 251.325 MHz, 258.775 MHz, 268.675 MHz and 2242.486 MHz
256.375 USA 179
(SDS-3 F3)

2004-034A
28384
US intelligence-related satellite - possibly including communications AM - 4.8 kHz data tone One of a pair of transmissions from a secondary payload on US classified satellite in HEO - Switched on and off to co-ordinate coverage with USA-198 - Prior to 2008 Mar 14, USA-179 was operating alone and was providing near 8 hours' coverage per pass at this frequency - Also transmits at 251.700 MHz and 2242.50 MHz
256.375 USA 198
(SDS-3 F4)

2007-060A
32378
US intelligence-related satellite - possibly including communications AM - 4.8 kHz data tone One of a pair of transmissions from a secondary payload on US classified satellite in HEO - Switched on and off to co-ordinate coverage with USA-179 - Also transmits at 251.700 MHz and 2242.50 MHz
256.475 USA 162
(SDS-3 F2)

2001-046A
26948
US intelligence-related satellite near 144° west longitude, possibly including communications AM - 4.8 kHz data tone One of a triplet of reported frequencies carrying similar signals from satellite in geosynchronous orbit, exact frequency not known - also reported to transmit at 250.075, 263.225, 267.550 MHz and 2242.5 MHz
258.150 USA 81
(Singleton 3)

1992-023A
21949
Electronic Intelligence Gathering similar to USA-32 AM - data plus modulated tones at 4.8 and 9.6 kHz European observations indicates that it is switched on and off on command from ground stations in Italy and Spain - also transmits at 2202.5 MHz and 2257.53 MHz, no longer active
258.775 USA 155
(SDS-3 F1)

2000-080A
26635
US intelligence-related satellite near 10° west longitude, possibly including communications AM - 4.8 kHz data tone One of a triplet of similar of transmissions from a secondary payload on a US classified satellite in GEO, signal appears to be continuous and is similar to ones from USA-179 - Also transmits at 251.325 MHz, 252.675 MHz, 268.675 MHz and 2242.486 MHz
258.800 USA 198
(SDS-3 F4)

2007-060A
32378
US intelligence-related satellite - possibly including communications AM - 4.8 kHz data tone plus various test modes One of a pair of transmissions from a secondary payload on US classified satellite in HEO used during the test phase of the satellite up until 2008 March 13 - on March 14, USA-198 switched to its operational frequencies at 251.700 MHz and 256.375 MHz, sharing duties with USA-179 - Test transmission also at 251.275 MHz, plus transmitter also at 2242.50 MHz
259.700 STS ISS Crew/payload transport AM voice Detected over Europe occasionally prior to Shuttle re-entry from ISS operations, and with voice during the orbital injection phase from Kennedy SC to Europe - also transmits at 2217.500 MHz
261.035 Cosmos 2439
(Strela-3)

2008-025D
32956
Store-dump comms (military) FM - mutiple sideband, data bursts of up to 40s at irregular intervals, mainly when overhead Russia Data burst is probably a reaction to an uplink message, also transmits at 244.512 MHz - entry updated 2009 Mar 8
263.225 USA 162
(SDS-3 F2)

2001-046A
26948
US intelligence-related satellite near 144° west longitude, possibly including communications AM - high speed (19.2 kb/s?) data transmission Reported frequency for a satellite in geosynchronous orbit, exact frequency not known - also reported to transmit at 250.075 MHz,256.475, 267.550 MHz and 2242.5 MHz
265.137 Gonets D1-3
(Gonets-D1)

1996-009C
23789
Store-dump comms FM - mutiple sideband, 0.5s trigger signal every minute plus occasional data bursts Has been reported on other frequencies in the past - entry updated 2009 Mar 13
267.550 USA 162
(SDS-3 F2)

2001-046A
26948
US intelligence-related satellite near 144° west longitude, possibly including communications AM - 4.8 kHz data tone One of a triplet of reported frequencies carrying similar signals from satellite in geosynchronous orbit, exact frequency not known - also reported to transmit at 250.075 MHz, 256.475 MHz, 263.225MHz and 2242.5 MHz
268.675 USA 155
(SDS-3 F1)

2000-080A
26635
US intelligence-related satellite near 10° west longitude, possibly including communications AM - 4.8 kHz data tone One of a triplet of similar of transmissions from a secondary payload on a US classified satellite in GEO, signal appears to be continuous and is similar to ones from USA-179 - Also transmits at 251.325 MHz, 252.675 MHz, 258.775 MHz and 2242.486 MHz
399.760 Cosmos 2341
(Parus)

1997-017A
24772
Comms CW - Doppler tracking beacon Coherent transmission at 149.910 MHz
399.760 Cosmos 2398
(Parus)

2003-023A
27818
Comms CW - Doppler tracking beacon Coherent transmission at 149.910 MHz
399.840 Cosmos 2378
(Parus)

2001-023A
26818
Comms CW - Doppler tracking beacon Coherent transmisiion at 149.940 MHz
399.840 Cosmos 2389
(Parus)

2002-026A
27436
Comms CW - Doppler tracking beacon Coherent transmisiion at 149.940 MHz
399.920 Cosmos 2336
(Parus)

1996-071A
24677
Navigation CW - Doppler tracking beacon Coherent transmission at 149.970 MHz
399.944 Oscar 29
(Transit/NIMS)

1987-080B
18362
Ionospheric modelling for US military (NIMS) Modulated CW carrier Maintenance frequency - Coherent transmission at 149.979 MHz (known to change between this frequency and the operational one) - No longer transmitting as of 2008 Jan 1
399.944 Oscar 31
(Transit/NIMS)

1988-074B
19420
Ionospheric modelling for US military (NIMS) Modulated CW carrier Maintenance frequency - Coherent transmission at 149.979 MHz (known to change between this frequency and the operational one) - Sometime between 2007 Dec 21 and 2008 Feb 7, the normal transmissions at both frequencies were replaced with a highly unstable CW carrier (wandering frequency + variations in strength)
399.968 Oscar 27
(Transit/NIMS)

1987-080A
18361
Ionospheric modelling for US military (NIMS) Modulated CW carrier Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one) - No longer transmitting as of 2008 Feb 1
399.968 Oscar 23
(Transit/NIMS)

1988-033A
19070
Ionospheric modelling for US military (NIMS) Modulated CW carrier Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one)
399.968 Oscar 32
(Transit/NIMS)

1988-033B
19071
Ionospheric modelling for US military (NIMS) Modulated CW carrier Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one)
399.968 Oscar 25
(Transit/NIMS)

1988-074A
19419
Ionospheric modelling for US military (NIMS) Modulated CW carrier Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one)
400.000 Nadezhda Navigation - plus Search and Rescue monitoring CW - Doppler tracking beacon Coherent transmission at 150.000 MHz - no longer active (see 150 MHz note)
400.000 Tsikada Navigation - plus Search and Rescue monitoring CW - Doppler tracking beacon Coherent transmission at 150.000 MHz - no longer active (see 150 MHz note)
400.032 Unknown Not known 'Wandering' CW Satellite in GEO, possibly graveyard orbit, also transmits 150.012 MHz
400.032 Geosat

1985-021A
15595
Oceanography - wave height measurement CW - Doppler tracking beacon Detected being switched on and off over Europe, not continuously active. Sometime around 2007, transmissions ceased to be detected but Geosat was subsequently determined to be transmitting continuously while in sunlight. Coherent transmission at 150.012 MHz
400.032 RADCAL
(STEP P92-1)

1993-041A
22698
Radar calibration CW - Doppler tracking beacon Radar Calibration satellite - Coherent transmission at 150.012 MHz, operation is intermittent
400.032 GFO

1998-007A
25157
Oceanography - wave height measurement CW - Doppler tracking beacon Geosat Follow On - Coherent transmission at 150.012 MHz and also transmittedat 2207.5 MHz. Ceased to transmit 2208 November.
400.032 ARGOS
(STEP P91-1)

1999-008A
25634
USAF space experiments CW - Doppler tracking beacon Coherent transmission at 150.012 MHz - Ceased to transmit 2003
400.032 USA 147
(DMSP F-15)

1999-067A
25991
RADCAL secondary payload aboard US military metsat CW - Doppler tracking beacon Defense Meteorological Satellite Program - also transmits at 2237.5 MHz, and 150.012 MHz - Post-launch testing revealed interference with other equipment from the 150/400 MHz transmitters so they remained inactive (apart from further testing) until 2006 Aug 14 .
400.032 Picosat 9
(STEP P97-1)

2001-043B
26930
USAF Space Test Program (STEP) CW - Doppler tracking beacon Detected being switched on and off over Europe, not continuously active - Coherent transmission at 150.012 MHz - Ceased to transmit late-2004
400.080 Cosmos 2361
(Parus)

1998-076A
25590
Navigation CW - Doppler tracking beacon Non operational but still transmitting 2000 December 13 - Coherent transmission at 150.030 MHz
400.100 Orbcomm Mobile telephony CW - Doppler tracking beacon Several satellites - Also transmitting digitised telephony signals at various frequencies 137-138 MHz (see individual entries)
400.450 Akebono
(EXOS-D)

1989-016A
19822
Studies of Magnetosphere and Ionosphere - Japan CW modulated Carrier with data modulation - appears as a tone modulated by a buzz
400.550 Resurs-O1
(#4L)

1998-043A
25394
Remote sensing CW Spread Spectrum Signals from Little LEO ranging between 400.318 and 400.787 MHz - Piggy-back 'store and forward' communications payload carried by Russian satellite - Transmitter not heard since 2001 February - The meteorological payload transmitted at 137.85 MHz - no longer active
400.552 Munin

2000-075C
26621
Auroral research - Sweden AM - modem-type databursts Telemetry but silent since 2001 Feb 12 (shortly after launch) probably due to onboard computer failure - no longer active
400.800 Cosmos 2373
(Yantar-1KFT11Ф660 №20, Kometa)

2000-058A
26552
'Yantar/Cometa' recoverable satellite - photographic mapping CW - Doppler tracking beacon Coherent transmission at 150.300 MHz - Cameras and film recovered after mission running between 2000 September 29 and 2000 November 14 - no longer active
400.800 Cosmos 2415
(Yantar-1KFT11Ф660 №21, Kometa)

2005-034A
28841
Yantar/Cometa' recoverable satellite - wide-area photographic reconnaissance CW - Doppler tracking beacon Coherent transmission at 150.300 MHz - Cameras and film recovered after mission running between 2005 September 2 and 2005 October 14? - no longer active
479.865 Zi Yuan 2
(Jiang Bing 3A)

2000-050A
26481
Remote sensing CW - Doppler tracking beacon Coherent transmission at at 179.951 MHz
480.017 Fengyun 1D

2002-024B
27431
Meteorological Imaging CW - Doppler tracking beacon Coherent transmission at 180.007 MHz
480.019 Fengyun 1C

1999-025A
25730
Remote sensing CW - Doppler tracking beacon Active transmitter until 2007 February when attacked in ground-based interceptor test - Coherent transmission at 180.007 MHz
480.025 CBERS 1

1999-057A
25940
Remote sensing CW - Doppler tracking beacon China Brasil Earth Resources Satellite - Coherent transmission at 180.011 MHz - silent since mid-2003
480.033 CBERS 2B

2007-042A
32062
Remote sensing CW - Doppler tracking beacon China Brazil Earth Resources Satellite - Coherent transmission at 180.013 MHz, also transmits at 2204.400 MHz
480.037 CBERS 2

2003-049A
28057
Remote sensing CW - Doppler tracking beacon China Brazil Earth Resources Satellite - Coherent transmission at 180.014 MHz, ceased to transmit 2007
628.000 ISS
(International Space Station)

1998-067A
25544
Space Station FM telemetry - sidebands at +/- 128 kHz Transmits on command from within Russia - usually in parallel with 630 MHz - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system
630.000 ISS
(International Space Station)

1998-067A
25544
Space Station FM telemetry - sidebands at +/- 128 kHz Transmits on command from within Russia - usually in parallel with 628 MHz - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system
632.000 ISS
(International Space Station)

1998-067A
25544
Space Station FM telemetry - sidebands at +/- 128 kHz Transmissions originally reported by Sven Grahn when Zarya first reached orbit - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system and probably no longer in use
634.000 ISS
(International Space Station)

1998-067A
25544
Space Station FM telemetry - sidebands at +/- 128 kHz Transmissions originally reported by Sven Grahn when Zarya first reached orbit - Transmits on command from Moscow, similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system and probably no longer in use
922.763 Progress M-42
(Progress 7K-TGM No 242)

1999-038A
25858
Mir/ISS Logistics CW Part of the REGUL command and control system - there may be other elements of signal on sidebands around this frequency - Active during the approach and departure phases from the ISS and occasionally during checks while docked - Also transmits at 121.75 MHz and 166 MHz
922.763 Progress M1-2
(Progress M1 No252)

2000-021A
26301
Mir/ISS Logistics CW Part of the REGUL command and control system - there may be other elements of signal on sidebands around this frequency - Active during the approach and departure phases from the ISS and occasionally during checks while docked - Also transmits at 121.75 MHz and 166 MHz
922.763 Soyuz TMA-1
(Soyuz 11F732 No211)

2002-050A
27552
ISS crew transport CW Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency - transmits during the approach and departure phases from the ISS and occasionally during checks while docked - Also transmits at 121.75 MHz and 166 MHz
1018.500 Briz-M Space launcher CW carrier plus sidebands Final launch vehicle stage, also transmits 1020.5 MHz - first tracked by Sven Grahn
1020.500 Briz-M Space launcher CW carrier plus sidebands Final launch vehicle stage, also transmits 1018.5 MHz - first tracked by Sven Grahn
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
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
2212.504 Coriolis

2003-001A
27640
Oceanographic and geomagnetic studies CW carrier plus side-bands Also transmits at 2222.528 MHz
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
2232.496 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
2232.511 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
2237.510 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)
2237.518 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
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
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
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
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
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
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
2282.503 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
 

Frequency lists, transmission details

Techniques, analysis and results of tracking activities

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

Ongoing Calendar of comings and goings in space

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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

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