This frequency list includes satellites and spacecraft tracked from the Zarya home location, with additional 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.
Specifically excluded from being listed are amateur radio satellites, the US military VHF communications transponders near 250 MHz aboard geosynchronous satellites, and the plethora of transmitters near 435 MHz.
That observational and analysis work is gratefully acknowledged and, whenever possible, I have tried to repay the effort by feeding back relevant observations from the radio side.
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.
| Freq (MHz) |
Satellite |
Payload |
Signal Type |
Notes |
| 121.500 |
Soyuz TMA-1 (Soyuz 11F732 № 211)
2002-050A 27552 |
ISS Crew Transport |
Morse Code |
Used to transmit the letters "AN" while descending under parachute - only detectable in immediate area of landing.
After touchdown - carries a "warble" transmission for direction finding, also used for two-way communication with the crew before hatch opening.
NOTE - this an international distress frequency. |
| 121.750 |
Progress M-42 (Progress 7K-TGM №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 |
Soyuz TMA-1 (Soyuz 11F732 № 211)
2002-050A 27552 |
ISS Crew transport |
Medium bandwidth FM voice |
Frequency used during on-orbit operations to and from the Space Station. Also transmits at 166 MHz and 922.763 MHz |
| 121.750 |
Progress M-06M (Progress 7K-TGM №406)
2010-033A 36748 |
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 |
| 130.167 |
ISS
1998-067A 25544 |
Space Station |
Medium bandwidth FM voice |
VHF-2 channel for Russian segment, used as an alternative to VHF-1 (143.625 MHz) during Shuttle/ISS on-orbit operations |
| 130.167 |
ISS
1998-067A 25544 |
Space Station |
Ranging pulses |
Used by TORU remote control docking system on the Russian segment, 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 |
Digital data - transmitted to/from mobile terminals |
One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz |
| 137.225 |
Orbcomm |
Mobile telephony |
Digital data - transmitted to/from mobile terminals |
One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz |
| 137.250 |
Orbcomm |
Mobile telephony |
Digital data - transmitted to/from mobile terminals |
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 |
Digital data - transmitted to/from mobile terminals |
One of several frequencies, individual satellites switch between them - Also transmits at 400.100 MHz |
| 137.460 |
Orbcomm |
Mobile telephony |
Digital data - transmitted to/from mobile terminals |
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 |
Digital data - transmitted to/from mobile terminals |
One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz |
| 137.688 |
Orbcomm |
Mobile telephony |
Digital data - transmitted to/from mobile terminals |
One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz |
| 137.713 |
Orbcomm |
Mobile telephony |
Digital data - transmitted to/from mobile terminals |
One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz |
| 137.738 |
Orbcomm |
Mobile telephony |
Digital data - transmitted to/from mobile terminals |
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 |
Digital data - transmitted to/from mobile terminals |
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
1998-067A 25544 |
Space Station |
Medium bandwidth FM voice |
Russian segment VHF-1 channel for communication with Moscow, also used to relay Mission Control to the Shuttle during docking.
Used as part of the ISS Early Communications System over the USA working with the Wallops Facility and White Sands and still used there occasionally but mainly in test mode.
Sven Grahn detected it carrying packet data transmissions during Expedition 1. |
| 145.800 |
ISS
1998-067A 25544 |
Space Station |
Amateur Radio downlink frequency |
Amateur radio downlink from US segment - see NASA's ARISS Page |
| 145.825 |
ISS
1998-067A 25544 |
Space Station |
Amateur Radio downlink frequency |
Amateur radio downlink from US segment - 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 |
| 149.665 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Duplicate of the standard 149.940 MHz transmission at a frequency 275 kHz below it. The transmitter is faulty. |
| 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 |
| 149.940 |
Cosmos 2454 (Parus)
2009-039A 35635 |
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 |
| 149.940 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
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 is probably minimal but is still supporting whatever other system requires reasonably precise positional information for the satellites.
Coherent transmission at 399.840 MHz plus duplicated transmissions at other frequencies around 150 and 400 MHz . The transmitter is faulty. |
| 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 2008 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 5D-3 F-15)
1999-067A 25991 |
RADCAL secondary payload aboard US military metsat |
CW - Doppler tracking beacon |
Defense Meteorological Satellite Program - Also transmits at 2207.535 MHz, 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 |
| 150.012 |
Formosat 3A (COSMIC FM-6)
2006-011A 29047 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
| 150.012 |
Formosat 3B (COSMIC FM-1)
2006-011B 29048 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
| 150.012 |
Formosat 3C (COSMIC FM-5)
2006-011C 29049 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 400.032MHz and 1066.752 MHz |
| 150.012 |
Formosat 3D (COSMIC FM-3)
2006-011D 29050 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
| 150.012 |
Formosat 3E (COSMIC FM-4)
2006-011E 29051 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
| 150.012 |
Formosat 3F (COSMIC FM-2)
2006-011F 29052 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
| 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 |
| 150.215 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Duplicate of the standard 149.940 MHz transmission at a frequency 275 kHz above it. The transmitter is faulty. |
| 150.300 |
Cosmos 2373 (Yantar 1KFT 11Ф660 №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 1KFT 11Ф660 №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 №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 |
Soyuz TMA-1 (Soyuz 11F732 № 211)
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 |
| 166.000 |
Progress M-06M (Progress 7K-TGM №406)
2010-033A 36748 |
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 |
| 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. No longer transmitting. |
| 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, also transmits 2201.050 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 and 2267.500 MHz
No longer transmitting - switched off 2010 May 10 after an operating anomaly was detected 2010 March. |
| 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, also transmits 2204.400 MHz and 2267.500 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 2385 (Strela-3)
2001-058B 27056 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Gonets D1-8 (Strela-3x)
2001-058E 27059 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz.
This is a Stela-3 even though listed elsewhere as Gonets-D1. There was a NORAD name mix-up with Cosmos 2386. |
| 244.512 |
Cosmos 2390 (Strela-3)
2002-036A 27464 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2391 (Strela-3)
2002-036B 27465 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2400 (Strela-3)
2003-037A 27868 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2408 (Strela-3)
2004-037A 28419 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2409 (Strela-3)
2004-037B 28420 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2437 (Strela-3)
2008-025B 32954 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2438 (Strela-3)
2008-025C 32955 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2439 (Strela-3)
2008-025D 32956 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2451 (Strela-3M or Rodnik)
2009-036A 35498 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Cosmos 2453 (Strela-3M or Rodnik)
2009-036C 35500 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.512 |
Strela-3
2010-043B 37153 |
Store and Forward Messaging (government/military) |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 261.035 MHz. |
| 244.999 |
Cosmos 2467 (Strela-3M/ Rodnik or Gonets-M)
2010-043A 37152 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Message Signal at 388.688 MHz. |
| 244.999 |
Cosmos 2468 (Strela-3M/ Rodnik or Gonets-M)
2010-043C 37154 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Message Signal at 388.688 MHz. |
| 245.157 |
Gonets D1-1
1996-009A 23787 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at another frequency in the 240-260 MHz band |
| 245.157 |
Gonets D1-2
1996-009B 23788 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at another frequency in the 240-260 MHz band |
| 245.157 |
Gonets D1-4
1997-006D 24728 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at another frequency in the 240-260 MHz band |
| 245.157 |
Gonets D1-5
1997-006E 24729 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at another frequency in the 240-260 MHz band |
| 245.157 |
Gonets D1-6
1997-006F 24730 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at another frequency in the 240-260 MHz band |
| 245.157 |
Cosmos 2386 (Gonets)
2001-058C 27057 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at another frequency in the 240-260 MHz band |
| 245.157 |
Gonets D1-7
2001-058D 27058 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at another frequency in the 240-260 MHz band |
| 245.157 |
Gonets D1-9
2001-058F 27060 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at another frequency in the 240-260 MHz band |
| 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, 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. No longer operational. |
| 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. No longer operational. |
| 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. No longer operational. |
| 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 transmitted at 2217.500 MHz.
Frequency no longer in use. |
| 261.035 |
Cosmos 2385 (Strela-3)
2001-058B 27056 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Gonets D1-8 (Strela-3x)
2001-058E 27059 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz.
This is a Strela-3 even though listed elsewhere as Gonets-D1. There was a NORAD name mix-up with Cosmos 2386. |
| 261.035 |
Cosmos 2390 (Strela-3)
2002-036A 27464 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2391 (Strela-3)
2002-036B 27465 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2400 (Strela-3)
2003-037A 27868 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2408 (Strela-3)
2004-037A 28419 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2409 (Strela-3)
2004-037B 28420 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2437 (Strela-3)
2008-025B 32954 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2438 (Strela-3)
2008-025C 32955 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2439 (Strela-3)
2008-025D 32956 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2451 (Strela-3M or Rodnik)
2009-036A 35498 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Cosmos 2453 (Strela-3M or Rodnik)
2009-036C 35500 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 261.035 |
Strela-3
2010-043B 37153 |
Store and Forward Messaging (government/military) |
Data transmission as messages are forwarded |
Message Signal at 244.512 MHz. |
| 262.910 |
Gonets D1-6
1997-006F 24730 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
| 262.910 |
Cosmos 2386 (Gonets)
2001-058C 27057 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
This is a Gonets-D1 even though listed elsewhere as Strela-3. There was a NORAD name mix-up with Gonets D1-8. Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz.
|
| 262.910 |
Gonets D1-7
2001-058D 27058 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
| 262.910 |
Gonets D1-9
2001-058F 27060 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Frequency is changed occasionally - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
| 263.086 |
Gonets D1-1
1996-009A 23787 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
| 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 |
| 264.400 |
Gonets D1-5
1997-006E 24729 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
| 264.750 |
Gonets D1-4
1997-006D 24728 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
| 265.059 |
Gonets D1-2
1996-009B 23788 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
| 265.137 |
Gonets D1-3
1996-009C 23789 |
Store and Forward Messaging |
Data transmission as messages are forwarded |
Has been reported on other frequencies in the past - entry updated 2009 Mar 13.
May now be silent, no Message Signal detected 2009 Sept. |
| 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. No longer operational. |
| 388.688 |
Cosmos 2452 (Strela-3)
2009-036B 35499 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 244.999 MHz. |
| 388.688 |
Cosmos 2467 (Strela-3M/ Rodnik or Gonets-M)
2010-043A 37152 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 244.999 MHz. |
| 388.688 |
Cosmos 2468 (Strela-3M/ Rodnik or Gonets-M)
2010-043C 37154 |
Store and Forward Messaging |
Message Signal every 60s, silent when receiving data message from ground |
Stored messages are transmitted at 244.999 MHz. |
| 399.150 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
CW carrier |
Duplicate of the standard 399.840 MHz transmission at a frequency 690 kHz below it. The transmitter is faulty. |
| 399.703 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
CW carrier |
Duplicate of the standard 399.840 MHz transmission at a frequency 137 kHz below it. The transmitter is faulty. |
| 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 |
| 399.840 |
Cosmos 2454 (Parus)
2009-039A 35635 |
Comms |
CW - Doppler tracking beacon |
Coherent transmisiion at 149.940 MHz |
| 399.840 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
CW - Doppler tracking beacon |
Coherent transmission at 149.940 MHz plus plus duplicated transmissions at other frequencies around 150 and 400 MHz due. The transmitter is faulty. |
| 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) |
| 399.977 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
CW carrier |
Duplicate of the standard 399.840 MHz transmission at a frequency 137 kHz above it. The transmitter is faulty. |
| 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 2008 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 5D-3 F-15)
1999-067A 25991 |
RADCAL secondary payload aboard US military metsat |
CW - Doppler tracking beacon |
Defense Meteorological Satellite Program - also transmits at 2207.535 MHz, 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 |
| 400.032 |
Formosat 3A (COSMIC FM-6)
2006-011A 29047 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
| 400.032 |
Formosat 3B (COSMIC FM-1)
2006-011B 29048 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
| 400.032 |
Formosat 3C (COSMIC FM-5)
2006-011C 29049 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz, during 2007 December, Formosat 3C appeared to be about 5 kHz lower than the nominal frequency - the other frequencies may be shifted pro-rata
|
| 400.032 |
Formosat 3D (COSMIC FM-3)
2006-011D 29050 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
| 400.032 |
Formosat 3E (COSMIC FM-4)
2006-011E 29051 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
| 400.032 |
Formosat 3F (COSMIC FM-2)
2006-011F 29052 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
| 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) |
| 400.117 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
CW carrier |
Duplicate of the standard 399.840 MHz transmission noted late-September 2010. The transmitter is faulty. |
| 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 |
| 400.530 |
Cosmos 2463 (Parus)
2010-017A 36519 |
Comms/Navigation |
CW carrier |
Duplicate of the standard 399.840 MHz transmission at a frequency 690 kHz above it. The transmitter is faulty. |
| 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 |
| 400.595 |
AprizeSat 2 (Latinsat 4)
2004-025A 28366 |
Dat comms |
Data bursts, approx 35s intervals |
- |
| 400.800 |
Cosmos 2373 (Yantar 1KFT 11Ф660 №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 1KFT 11Ф660 №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 |
| 465.000 |
Omid (Hope)
2009-004A 33506 |
Demonstration satellite, reported to include a store and forward messaging payload |
AM - multiple sidebands with 25 kHz bandwidth |
Switches on and off by onboard timer programmed from the ground |
| 479.865 |
Zi Yuan 2 (Jiang Bing 3A)
2000-050A 26481 |
Remote sensing |
CW - Doppler tracking beacon |
Coherent transmission at at 179.951 MHz. No longer transmitting. |
| 480.017 |
Fengyun 1D
2002-024B 27431 |
Meteorological Imaging |
CW - Doppler tracking beacon |
Coherent transmission at 180.007 MHz, also transmits 2201.050 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 and 2267.500 MHz
No longer transmitting - switched off 2010 May 10 after an operating anomaly was detected 2010 March |
| 480.037 |
CBERS 2
2003-049A 28057 |
Remote sensing |
CW - Doppler tracking beacon |
China Brazil Earth Resources Satellite - Coherent transmission at 180.014 MHz, also transmits 2204.400 MHz and 2267.500 MHz, ceased to transmit 2007 |
| 628.000 |
ISS
1998-067A 25544 |
Space Station |
FM telemetry - sidebands at +/- 128 kHz |
Transmission from the Zvezda module.
Transmits on command from within Russia, several times per day - 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
1998-067A 25544 |
Space Station |
FM telemetry - sidebands at +/- 128 kHz |
Transmission from the Zvezda module.
Transmits on command from within Russia, several times per day - 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
1998-067A 25544 |
Space Station |
FM telemetry - sidebands at +/- 128 kHz |
Transmission from the Zarya module.
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 |
| 633.909 |
ISS
1998-067A 25544 |
Space Station |
FM telemetry - sidebands at +/- 128 kHz |
Transmission from the Zarya module. The central frequency is 91 kHz lower than what might be regarded as the norm for this type of transmission.
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. Transmissions are infrequent. |
| 922.763 |
Progress M-42 (Progress 7K-TGM №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 |
Soyuz TMA-1 (Soyuz 11F732 № 211)
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 |
| 922.763 |
Progress M-06M (Progress 7K-TGM №406)
2010-033A 36748 |
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 |
| 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 |
| 1066.752 |
Formosat 3A (COSMIC FM-6)
2006-011A 29047 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
| 1066.752 |
Formosat 3B (COSMIC FM-1)
2006-011B 29048 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
| 1066.752 |
Formosat 3C (COSMIC FM-5)
2006-011C 29049 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
| 1066.752 |
Formosat 3D (COSMIC FM-3)
2006-011D 29050 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
| 1066.752 |
Formosat 3E (COSMIC FM-4)
2006-011E 29051 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
| 1066.752 |
Formosat 3F (COSMIC FM-2)
2006-011F 29052 |
Atmospheric studies using CW beacons at coherent frequencies |
CW |
Switched on when observation required, European observations usuall 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
| 2200.647 |
Meteor M-1
2009-049A 35865 |
Meteorology |
CW |
Appears to be continuous transmission - first noted 2010 September |
| 2201.050 |
Fengyun 1D
2002-024B 27431 |
Meteorology |
CW |
Appears to be continuous transmission - first noted 2010 September, also transmits 180.007 and 480.017 MHz |
| 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 2282.5 MHz but transmissions at the two frequencies are not simultaneous |
| 2202.513 |
USA 81 (Singleton 3)
1992-023A 21949 |
Electronic Intelligence Gathering similar to USA-32 |
CW carrier plus side-bands |
Also transmits at 2257.530 MHz, thought to be no longer active but detected early 2011 |
| 2204.400 |
CBERS 2
2003-049A 28057 |
Remote sensing |
CW carrier + sidebands |
China Brazil Earth Resources Satellite, also transmits 180.014 MHz, 480.037 MHz and 2267.500 MHz, ceased to transmit 2007 |
| 2204.400 |
CBERS 2B
2007-042A 32062 |
Remote sensing |
CW carrier plus data sidebands |
China Brazil Earth Resources Satellite, also transmits 180.013 MHz, 480.033 MHz and 2267.500 MHz
No longer transmitting - switched off 2010 May 10 after an operating anomaly was detected 2010 March |
| 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 |
| 2205.500 |
Shi Jian 7 (SJ-7)
2005-024A 28737 |
Science/technology experiments |
CW carrier + sidebands |
Frequency reported 2008, also transmits 2227.500 MHz |
| 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 2008 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 |
| 2207.500 |
Jian Bing 3C (Zi Yuan 2C)
2004-044A 28470 |
Military reconnaissance |
CW carrier + sidebands |
Frequency reported 2008, also transmits at 2220.5 MHz |
| 2207.510 |
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 2222.5 MHz, 2237.5 MHz and 2247.5 MHz |
| 2207.535 |
USA 147 (DMSP 5D-3 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 2252.5 MHz, 150.012 MHz and 400.032 MHz (the last two are the RADCAL frequencies) |
| 2209.797 |
Huan Jing 1B (HJ-1B)
2008-041B 33321 |
Disaster monitoring within China |
CW plus data sidebands |
Strong, Part of constellation |
| 2212.504 |
Coriolis
2003-001A 27640 |
Oceanographic and geomagnetic studies |
CW carrier plus side-bands |
Also transmits at 2222.528 MHz |
| 2212.809 |
Yaogan 3
2007-055A 32289 |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar |
CW carrier (+sidebands?) |
May not transmit on all passes - European observations are more common on southbound passes (these occur between passes over the PRC mainland), also transmits 2295.650 MHz |
| 2212.810 |
Yaogan 1
2006-015A 29092 |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar |
CW carrier (+sidebands?) |
European observations tend to be on southbound passes (these occur between passes over the PRC mainland), also transmits 2295.650 MHz. No longer active - Yaogan 1 broke into several pieces 2010 Feb 4. |
| 2213.600 |
Shi Jian 6C (SJ-6C)
2006-046A 29505 |
Science/technology experiments |
CW carrier + sidebands |
Frequency reported 2008 |
| 2216.525 |
Yaogan 4
2008-061A 33446 |
Optical remote sensing - military or government |
CW carrier (+sidebands?) |
- |
| 2216.527 |
Yaogan 2
2007-019A 31490 |
Optical remote sensing - military or government |
CW carrier (+sidebands?) |
- |
| 2216.527 |
Yaogan 7
2009-069A 36110 |
Optical remote sensing - military or government |
CW Carrier + sidebands |
- |
| 2217.367 |
Tansuo 2 (Shiyan 2)
2004-046A 28479 |
Science/technology experiments |
CW carrier + sidebands |
Strong, possibly pulsating rapidly |
| 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 transmitted at 259.7 MHz.
Frequency no longer in use. |
| 2217.500 |
Cloudsat
2006-016A 29107 |
Climate research |
CW carrier + sidebands |
Frequency is approximate |
| 2220.476 |
Yaogan 5
2008-064A 33456 |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar |
CW carrier (+sidebands?) |
Also reportedly transmits 2282.1 MHz |
| 2220.500 |
Jian Bing 3C (Zi Yuan 2C)
2004-044A 28470 |
Military reconnaissance |
CW carrier + sidebands |
Frequency reported 2008, also transmits at 2207.5 MHz |
| 2222.476 |
USA 152 (Lacrosse 4)
2000-047A 26473 |
Military radar reconnaissance satellite |
CW carrier plus side-bands |
- |
| 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 2207.5, MHz, 2237.5 MHz and 2247.5 MHz |
| 2222.487 |
USA 210 (DMSP 5D-3 F-18)
2009-057A 35951 |
Military meteorological satellite - unspecified secondary payloads |
CW carrier plus side-bands |
Defense Meteorological Satellite Program |
| 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 - latter 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 |
| 2222.508 |
USA 69 (Lacrosse 2)
1991-017A 21147 |
Military radar reconnaissance satellite |
CW carrier plus side-bands |
Frequency Information originally contributed by the late Ivan Artner - later confirmed by other observers |
| 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 |
| 2224.564 |
Shi Jian 6E (SJ-6E)
2008-053A 33408 |
Science/technology experiments |
CW carrier + sidebands |
- |
| 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 |
| 2227.500 |
Shi Jian 7 (SJ-7)
2005-024A 28737 |
Science/technology experiments |
CW carrier + sidebands |
Frequency reported 2008, also transmits 2205.500 MHz |
| 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 - |
| 2229.605 |
Shi Jian 6A (SJ-6A)
2004-035A 28413 |
Science/technology experiments |
CW carrier + sidebands |
- |
| 2230.795 |
Tansuo 3 (Shiyan 3)
2008-056A 33433 |
Science/technology experiments |
CW carrier + sidebands |
Weak |
| 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 |
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 |
| 2232.498 |
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 |
| 2232.498 |
USA 198 (SDS-3 F4)
2007-060A 32378 |
Navy Ocean Surveillance System SIGINT |
CW carrier plus side-bands |
Navy Ocean Surveillance System |
| 2232.500 |
USA 181 P/L 1 (NOSS 3-3 leader)
2005-004A 28537 |
Navy Ocean Surveillance System SIGINT |
CW carrier plus side-bands |
Also reported to transmit at 2222.5 MHz and 2277.5 MHz - latter frequency Information contributed by the late Ivan Artner |
| 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)
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. After arrival at the Moon, Chang'e transmitted on command from ground stations.
Mission ended 2010 Mar 1 when Chang'e made a retrograde rocket firing and impacted the lunar surface. |
| 2235.800 |
Shi Jian 6B (SJ-6B)
2004-035B 28414 |
Science/technology experiments |
CW carrier + sidebands |
Frequency reported 2008 |
| 2235.800 |
Shi Jian 6F (SJ-6F)
2008-053B 33409 |
Science/technology experiments |
CW carrier + sidebands |
Frequency reported by other observers in 2008, but appears to be silent |
| 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 |
| 2237.512 |
USA 172 (DMSP 5D-3 F-16)
2003-048A 28054 |
Military meteorological satellite - unspecified secondary payloads |
CW + side-bands |
Defense Meteorological Satellite Program - Also transmits at 2207.5 MHz, 2222.473 MHz and 2247.415 MHz |
| 2237.514 |
USA 191 (DMSP 5D-3 F-17)
2006-050A 29522 |
Military meteorological satellite - unspecified secondary payloads |
CW |
Defense Meteorological Satellite Program - Also transmits at 2222.5 MHz and 2247.415 MHz |
| 2237.515 |
USA 109 (DMSP 5D-2 F-13)
1995-015A 23533 |
Military meteorological satellite - unspecified secondary payloads |
CW + side-bands |
Defense Meteorological Satellite Program |
| 2237.517 |
USA 147 (DMSP 5D-3 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 2207.535 MHz, 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 |
| 2242.485 |
USA 116 (KH-11 Block-3 F-2/Crystal)
1995-066A 23728 |
Digital transmission, multi-tasking reconnaissance satellite |
CW carrier + sidebands |
Identified from a single radio observation (early 2008) which is not normally sufficient. However, there is significant circumstantial evidence that the identification is correct.
No longer in orbit |
| 2242.485 |
USA 129 (KH-11 Block-3 F3/Crystal)
1996-072A 24680 |
US - military and intelligence |
CW carrier plus side-bands |
Possible small error in the frequency measurement |
| 2242.485 |
USA 161 (KH-11 Block-4 F1/Crystal)
2001-044A 26934 |
Digital transmission, multi-tasking reconnaissance satellite |
CW carrier + sidebands |
- |
| 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 variable according to onboard power available - increases significantly at times of eclipse. Also transmitted at 251.325 MHz, 252.675, 258.775 and 268.775 MHz. No longer operational. |
| 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.
No longer transmitting - probably since 2010 May. Also lost to visual observers because of changes brought about gravity effects on the eccentric orbit causing perigee to dip low into the atmosphere. |
| 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 transmitted AFSATCOM signal near 243.7 MHz.
The S-band transmission from USA-125, an SDS-2 satellite, was at a lower power than the SDS-3 satellites.
Ceased to transmit around 2010 Aug 31 when either the transmitter was switched off, or the satellite was guided to a destructive re-entry. |
| 2242.500 |
USA 40 (SDS-2 F1)
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, also transmits at 251.700 MHz and 256.375 MHz, and used 251.275 and 258.800 MHz during the orbital test phase up to 2008 Mar 13
Frequency discovered independently by Bob Christy and Sven Grahn about 20 minutes after launch. |
| 2242.505 |
USA 186 (KH-11 Block-3 F4/Crystal)
2005-042A 28888 |
Digital transmission, multi-tasking reconnaissance satellite |
CW carrier + sidebands |
- |
| 2242.506 |
USA 215 (NRO L-41)
2010-046A 37162 |
Reconnaissance using radar |
CW |
Discovered by Bob Christy immediately after launch |
| 2242.514 |
USA 224 (KH-11 Block-3 F5?/Crystal)
2011-002A 37348 |
Digital transmission, multi-tasking reconnaissance satellite |
CW carrier + sidebands |
Discovered by Bob Christy on day of launch. Intensive radio tracking over first few days allowed good determination of the orbit for acquisition by visual observers. |
| 2242.515 |
USA 21 (SDS-1 F6)
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 |
| 2246.400 |
Fengyun 3A
2008-026A 32958 |
Imaging Metsat - geosynchronous orbit |
CW carrier + sidebands |
Frequency reported 2008, also transmits 2264.700 MHz, below horizon from UK |
| 2247.478 |
TSX-5
2000-030A 26374 |
Experiments in advanced space 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 |
STSS Demonstrator dual satellite mission together with USA 209 testing missile detection technology |
CW carrier plus sidebands |
Frequency shows variability, possibly due to internal electrical power loading. Transmission frequency sometimes locked to the uplink leading to dual Doppler effect.
See 2272.5 MHz for USA-209. |
| 2247.500 |
NOAA 11 (NOAA H)
1988-089A 19531 |
Metsat |
Cyclic carrier - approx 4s on then 4s off |
Satellite de-commissioned and batteries disconnected 2004 Jun 22 at 16:24:28 UTC - output from STX4 transmitter detected 2009 Oct, probably powered by output from solar cells (only detectable on daylight passes) |
| 2247.500 |
NOAA 19 (NOAA N')
2009-005A 33591 |
Metsat |
Data |
STX4 transmitter - used during launch and contingency, occasionally heard from orbit and heard to switch on and off, detected 2009 Oct |
| 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 |
| 2249.995 |
Chuang Xin 1-02 (CX-1-02)
2008-056B 33434 |
Earth observation - meteorological data for disaster relief |
CW carrier + sidebands |
- |
| 2250.000 |
Oceansat 2
2009-051A 35931 |
Ocean Studies |
CW carrier plus sidebands |
Sun-synchronous orbit, Indian satellite |
| 2251.446 |
Shi Jian 6F (SJ-6F)
2008-053B 33409 |
Science/technology experiments |
CW carrier + sidebands |
Relatively strong signal |
| 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 5D-3 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 2207.535 MHz, 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 F-13)
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 |
| 2256.251 |
Shi Jian 6D (SJ-6D)
2006-046B 29506 |
Science/technology experiments |
CW carrier + sidebands |
Weak signal |
| 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 and 258.150 MHz, , frequency may be active intermittently |
| 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 |
| 2264.700 |
Fengyun 3A
2008-026A 32958 |
Imaging Metsat - geosynchronous orbit |
CW carrier + sidebands |
Frequency reported 2008, also transmits 2246.400 MHz, below horizon from UK |
| 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 |
| 2266.319 |
Yaogan 8
2009-072A 36121 |
Remote sensing |
Weak CW |
- |
| 2267.500 |
CBERS 2
2003-049A 28057 |
Remote sensing |
CW carrier + sidebands |
China Brazil Earth Resources Satellite, also transmits 180.014 MHz, 480.037 MHz and 2204.400 MHz, ceased to transmit 2007 |
| 2267.500 |
CBERS 2B
2007-042A 32062 |
Remote sensing |
CW carrier + sidebands |
China Brazil Earth Resources Satellite, also transmits 180.013 MHz and 480.033 MHz and 2204.400 MHz
No longer transmitting - switched off 2010 May 10 after an operating anomaly was detected 2010 March |
| 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 |
STSS Demonstrator dual satellite mission together with USA 208 testing missile detection technology |
CW carrier plus sidebands |
Frequency shows variability, possibly due to internal electrical power loading. Transmission frequency sometimes locked to the uplink leading to dual Doppler effect.
See 2247.5 MHz for USA-208. |
| 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 2232.5 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 |
| 2277.520 |
USA 184 (Trumpet 4)
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 |
| 2280.716 |
Yaogan 6
2009-021A 34839 |
Digital imaging for remote sensing, government/military use also |
CW carrier (+sidebands?) |
Weak, also reported at 2296.500 MHz |
| 2282.100 |
Yaogan 5
2008-064A 33456 |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar |
CW carrier (+sidebands?) |
Frequency reported 2008, also transmits 2220.476 MHz |
| 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 |
| 2282.507 |
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 2202.5 MHz but transmissions at the two frequencies are not simultaneous |
| 2285.525 |
ZP-1A-2 (Zheda Pixing 1A-1)
2010-047C 37167 |
Microelectronics studies |
Weak CW |
- |
| 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 |
| 2286.001 |
Cosmos 2469 (OKO)
2010-049A 37170 |
Early warning |
CW |
Transmission not continuous, also transmits 2292.001 MHz |
| 2287.500 |
Aqua (EOS PM-1)
2002-022A 27424 |
Climate research |
CW carrier + sidebands |
Frequency is +/-10 kHz |
| 2287.500 |
Aura (EOS Chem-1)
2004-026A 28376 |
Climate research |
CW carrier + sidebands |
Frequency is +/-10 kHz |
| 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 2286.001 MHz, operates only above the northern hemisphere |
| 2292.001 |
Cosmos 2469 (OKO)
2010-049A 37170 |
Early warning |
CW |
Transmisiion not continuous, also tranmits 2286.001 MHz |
| 2295.650 |
Yaogan 1
2006-015A 29092 |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar |
CW carrier (+sidebands?) |
Frequency reported 2008, also transmits 2212.810 MHz. No longer active - Yaogan 1 broke into several pieces 2010 Feb 4. |
| 2295.650 |
Yaogan 3
2007-055A 32289 |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar |
CW carrier (+sidebands?) |
Frequency reported 2008, also transmits 2212.810 MHz |
| 2296.500 |
Yaogan 6
2009-021A 34839 |
Digital imaging for remote sensing, government/military use also |
CW carrier (+sidebands?) |
Frequency reported 2008, also transmits 2280.716 MHz |
| 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 |