Freq (MHz) |
Satellite |
Transmission |
Notes |
470.000 |
|
Mixed - music and telemetry |
: Failed to reach orbit, the music consisted of songs in praise of Korean leaders Kim Jong Il and Kim Il Sung. The previous KMS satellite (2009) also failed to reach orbit and was reported to use the same frequency. |
2282.500 SGLS 17 |
AIM 2007-015A 31304 |
FM |
NASA - atmospheric studies: Indistinct lines when viewed with SDR and software |
400.450 |
Akebono 1989-016A 19822 |
CW modulated |
Studies of Magnetosphere and Ionosphere - Japan: Carrier with data modulation - appears as a tone modulated by a buzz |
2207.500 SGLS 2 |
AMS 2 1977-044A 10033 |
CW carrier plus side-bands |
Military meteorological satellite: Advanced Meteorological Satellite - Also transmits at 2237.5MHz and 2252.5 MHz - Frequency Information contributed by the late Ivan Artner |
2237.500 SGLS 8 |
AMS 2 1977-044A 10033 |
CW - wide sweeping carrier |
Military meteorological satellite: Advanced Meteorological Satellite - Also transmits at 2207.5MHz and 2252.5 MHz |
2252.500 SGLS 11 |
AMS 2 1977-044A 10033 |
CW carrier plus side-bands |
Military meteorological satellite: Advanced Meteorological Satellite - Also transmits at 2207.5 MHz and 2234.5 MHz - Frequency Information contributed by the late Ivan Artner |
400.595 |
AprizeSat 2 2004-025A 28366 |
Data bursts, approx 35s intervals |
Data comms: - |
2287.500 SGLS 18 |
Aqua 2002-022A 27424 |
CW carrier + sidebands |
Climate research: Frequency is +/-10 kHz |
150.012 |
ARGOS 1999-008A 25634 |
CW - Doppler tracking beacon |
USAF space experiments: Coherent transmission at 400.032 MHz - Ceased to transmit 2003 |
400.032 |
ARGOS 1999-008A 25634 |
CW - Doppler tracking beacon |
USAF space experiments: Coherent transmission at 150.012 MHz - Ceased to transmit 2003 |
2242.517 SGLS 9 |
ASTEX 1971-089A 5560 |
Multiple sidebands - very small dispersion |
Technology experiments: Old satellite detected as still transmitting during 2008 March |
2287.500 SGLS 18 |
Aura 2004-026A 28376 |
CW carrier + sidebands |
Climate research: Frequency is +/-10 kHz |
1018.500 |
Briz-M
|
CW carrier plus sidebands |
Space launcher: Final launch vehicle stage, also transmits 1020.5 MHz - first tracked by Sven Grahn |
1020.500 |
Briz-M
|
CW carrier plus sidebands |
Space launcher: Final launch vehicle stage, also transmits 1018.5 MHz - first tracked by Sven Grahn |
180.011 |
CBERS 1 1999-057A 25940 |
CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz - and further carriers at +/- 40 kHz |
Remote sensing: 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 |
480.025 |
CBERS 1 1999-057A 25940 |
CW - Doppler tracking beacon |
Remote sensing: China Brasil Earth Resources Satellite - Coherent transmission at 180.011 MHz - silent since mid-2003 |
180.014 |
CBERS 2 2003-049A 28057 |
CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz |
Remote sensing: China Brazil Earth Resources Satellite - Coherent transmission at 480.037 MHz, also transmits 2204.400 MHz and 2267.500 MHz, ceased to transmit 2007 |
480.037 |
CBERS 2 2003-049A 28057 |
CW - Doppler tracking beacon |
Remote sensing: China Brazil Earth Resources Satellite - Coherent transmission at 180.014 MHz, also transmits 2204.400 MHz and 2267.500 MHz, ceased to transmit 2007 |
2204.400 |
CBERS 2 2003-049A 28057 |
CW carrier + sidebands |
Remote sensing: China Brazil Earth Resources Satellite, also transmits 180.014 MHz, 480.037 MHz and 2267.500 MHz, ceased to transmit 2007 |
2267.500 |
CBERS 2 2003-049A 28057 |
CW carrier + sidebands |
Remote sensing: China Brazil Earth Resources Satellite, also transmits 180.014 MHz, 480.037 MHz and 2204.400 MHz, ceased to transmit 2007 |
180.013 |
CBERS 2B 2007-042A 32062 |
CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz |
Remote sensing: 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. |
480.033 |
CBERS 2B 2007-042A 32062 |
CW - Doppler tracking beacon |
Remote sensing: 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 |
2204.400 |
CBERS 2B 2007-042A 32062 |
CW carrier plus data sidebands |
Remote sensing: 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 |
2267.500 |
CBERS 2B 2007-042A 32062 |
CW carrier + sidebands |
Remote sensing: 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 |
2234.520 |
Chang'e 1 2007-051A 32273 |
CW carrier plus data sidebands and secondary carriers - two modes - 2 MHz bandwidth and 256 kHz bandwidth |
Lunar orbiting satellite: Lunar probe built and launched by the Peoples' Republic of China, originally tracked in HEO and then followed to the Moon. Mission ended 2010 Mar 1 when Chang'e made a retrograde rocket firing and impacted the lunar surface. |
2270.000 |
Chibis-M 2011-062C 38051 |
|
Lightning studies satellite: Frequency information provided by Sven Grahn |
2249.995 |
Chuangxin 1-02 2008-056B 33434 |
CW carrier + sidebands |
Earth observation - meteorological data for disaster relief: - |
2217.500 SGLS 4 |
Cloudsat 2006-016A 29107 |
CW carrier + sidebands |
NASA - cloud & precipitation studies: Frequency is approximate |
137.350 |
Compass 2 2006-019A 29157 |
CW/AM |
Russian scientific satellite studying possible ways of predicting earthquakes - not operating properly: 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 |
2222.528 SGLS 5 |
Coriolis 2003-001A 27640 |
CW carrier plus side-bands |
Military science satellite: Frequency Information contributed by the late Ivan Artner, also transmits at 2212.504 MHz |
2212.504 SGLS 3 |
Coriolis 2003-001A 27640 |
CW carrier plus side-bands |
Military science satellite: Also transmits at 2222.528 MHz |
149.970 |
Cosmos 2336 1996-071A 24677 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.840 MHz |
399.920 |
Cosmos 2336 1996-071A 24677 |
CW - Doppler tracking beacon |
Positional signal transmissions and store/forward comms: Coherent transmission at 149.970 MHz |
149.910 |
Cosmos 2341 1997-017A 24772 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.920 MHz |
399.760 |
Cosmos 2341 1997-017A 24772 |
CW - Doppler tracking beacon |
Positional signal transmissions and store/forward comms: Coherent transmission at 149.910 MHz |
150.030 |
Cosmos 2361 1998-076A 25590 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Coherent transmission at 400.080 MHz |
400.080 |
Cosmos 2361 1998-076A 25590 |
CW - Doppler tracking beacon |
Positional signal transmissions and store/forward comms: Non operational but still transmitting 2000 December 13 - Coherent transmission at 150.030 MHz |
150.300 |
Cosmos 2373 2000-058A 26552 |
AM telemetry - wide bandwidth |
Photographic mapping: 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 |
400.800 |
Cosmos 2373 2000-058A 26552 |
CW - Doppler tracking beacon |
Photographic mapping: Coherent transmission at 150.300 MHz - Cameras and film recovered after mission running between 2000 September 29 and 2000 November 14 - no longer active |
149.940 |
Cosmos 2378 2001-023A 26818 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.840 MHz |
399.840 |
Cosmos 2378 2001-023A 26818 |
CW - Doppler tracking beacon |
Positional signal transmissions and store/forward comms: Coherent transmission at 149.940 MHz |
244.512 |
Cosmos 2385 2001-058B 27056 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2385 2001-058B 27056 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
262.910 |
Cosmos 2386 2001-058C 27057 |
Data transmission as messages are forwarded |
Store and Forward communications: 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.
|
245.157 |
Cosmos 2386 2001-058C 27057 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band |
2298.000 |
Cosmos 2388 2002-017A 27409 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmitted at at 2298.0 MHz - ceased to operate 2006 November |
2304.000 |
Cosmos 2388 2002-017A 27409 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmitted at 2298.0 MHz - ceased to operate 2006 November |
149.970 |
Cosmos 2389 2002-026A 27436 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.920 MHz |
399.840 |
Cosmos 2389 2002-026A 27436 |
CW - Doppler tracking beacon |
Positional signal transmissions and store/forward comms: Coherent transmission at 149.940 MHz |
244.512 |
Cosmos 2390 2002-036A 27464 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2390 2002-036A 27464 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
244.512 |
Cosmos 2391 2002-036B 27465 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2391 2002-036B 27465 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
2298.000 |
Cosmos 2393 2002-059A 27613 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmitted at 2286.0 MHz - ceased to operate 2007 March |
2304.000 |
Cosmos 2393 2002-059A 27613 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmitted at 2286.0 MHz - ceased to operate 2007 March |
149.910 |
Cosmos 2398 2003-023A 27818 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.760 MHz |
399.760 |
Cosmos 2398 2003-023A 27818 |
CW - Doppler tracking beacon |
Positional signal transmissions and store/forward comms: Coherent transmission at 149.910 MHz |
244.512 |
Cosmos 2400 2003-037A 27868 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2400 2003-037A 27868 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
244.512 |
Cosmos 2408 2004-037A 28419 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2408 2004-037A 28419 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
244.512 |
Cosmos 2409 2004-037B 28420 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2409 2004-037B 28420 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
150.300 |
Cosmos 2415 2005-034A 28841 |
CW - Doppler tracking beacon |
Photographic reconnaissance: 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 |
400.800 |
Cosmos 2415 2005-034A 28841 |
CW - Doppler tracking beacon |
Photographic reconnaissance: Coherent transmission at 150.300 MHz - Cameras and film recovered after mission running between 2005 September 2 and 2005 October 14? - no longer active |
2286.001 |
Cosmos 2422 2006-030A 29260 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2292.001 MHz, operates only above the northern hemisphere |
2292.001 |
Cosmos 2422 2006-030A 29260 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2286.001 MHz, operates only above the northern hemisphere |
2298.000 |
Cosmos 2430 2007-049A 32268 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2304.0 MHz, operates only above the northern hemisphere |
2304.000 |
Cosmos 2430 2007-049A 32268 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2298.0 MHz, operates only above the northern hemisphere |
244.512 |
Cosmos 2437 2008-025B 32954 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2437 2008-025B 32954 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
244.512 |
Cosmos 2438 2008-025C 32955 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2438 2008-025C 32955 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
244.512 |
Cosmos 2439 2008-025D 32956 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2439 2008-025D 32956 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
2298.000 |
Cosmos 2446 2008-062A 33447 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2304.000 MHz, operates only above the northern hemisphere |
2304.000 |
Cosmos 2446 2008-062A 33447 |
CW carrier plus side-bands |
Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2298.000 MHz, operates only above the northern hemisphere |
244.512 |
Cosmos 2451 2009-036A 35498 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2451 2009-036A 35498 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
388.688 |
Cosmos 2452 2009-036B 35499 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 244.999 MHz. |
244.512 |
Cosmos 2453 2009-036C 35500 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2453 2009-036C 35500 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
149.940 |
Cosmos 2454 2009-039A 35635 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.840 MHz |
399.840 |
Cosmos 2454 2009-039A 35635 |
CW - Doppler tracking beacon |
Positional signal transmissions and store/forward comms: Coherent transmission at 149.940 MHz |
400.117 |
Cosmos 2463 2010-017A 36519 |
CW carrier |
Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission noted late-September 2010. The transmitter is faulty. |
149.940 |
Cosmos 2463 2010-017A 36519 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.840 plus duplicated transmissions at other frequencies around 150 and 400 MHz . The transmitter is faulty. |
149.665 |
Cosmos 2463 2010-017A 36519 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Duplicate of the standard 149.940 MHz transmission at a frequency 275 kHz below it. The transmitter is faulty. |
150.215 |
Cosmos 2463 2010-017A 36519 |
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Positional signal transmissions and store/forward comms: Duplicate of the standard 149.940 MHz transmission at a frequency 275 kHz above it. The transmitter is faulty. |
399.150 |
Cosmos 2463 2010-017A 36519 |
CW carrier |
Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission at a frequency 690 kHz below it. The transmitter is faulty. |
399.703 |
Cosmos 2463 2010-017A 36519 |
CW carrier |
Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission at a frequency 137 kHz below it. The transmitter is faulty. |
399.840 |
Cosmos 2463 2010-017A 36519 |
CW - Doppler tracking beacon |
Positional signal transmissions and store/forward comms: Coherent transmission at 149.940 MHz plus plus duplicated transmissions at other frequencies around 150 and 400 MHz due. The transmitter is faulty. |
399.977 |
Cosmos 2463 2010-017A 36519 |
CW carrier |
Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission at a frequency 137 kHz above it. The transmitter is faulty. |
400.530 |
Cosmos 2463 2010-017A 36519 |
CW carrier |
Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission at a frequency 690 kHz above it. The transmitter is faulty. |
244.512 |
Cosmos 2467 2010-043B 37153 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 261.035 MHz. |
261.035 |
Cosmos 2467 2010-043B 37153 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 244.512 MHz. |
244.999 |
Cosmos 2468 2010-043C 37154 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 388.688 MHz. |
388.688 |
Cosmos 2468 2010-043C 37154 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 244.999 MHz. |
2292.001 |
Cosmos 2469 2010-049A 37170 |
CW |
Missile early warning: Transmisiion not continuous, also tranmits 2286.001 MHz |
2286.001 |
Cosmos 2469 2010-049A 37170 |
CW |
Missile early warning: Transmission not continuous, also transmits 2292.001 MHz |
2286.000 |
Cosmos 2469 2010-049A 37170 |
|
Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2298.000 MHz, operates only above the northern hemisphere |
2292.000 |
Cosmos 2469 2010-049A 37170 |
|
Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2298.000 MHz, operates only above the northern hemisphere |
2241.500 |
Delta Launch Vehicle (Second Stage)
|
CW + side-bands |
Satellite launches: Detectable during on-orbit launch vehicle operations at start of satellite mission |
2257.500 SGLS 12 |
DSCS III F-1 1982-106B 13637 |
CW carrier plus side-bands |
Comms: Possibly defunct, in geosynchronous drift orbit - Frequency Information contributed by the late Ivan Artner |
136.440 |
ERS 15 1966-077C 2412 |
AM with 1.3 kHz tone |
Military satellite: Incorrectly catalogued by NORAD as SECOR 7 - (information contributed by Michael D Kenny) |
136.260 |
ERS 20 1967-040D 2768 |
AM - tone (unstable) |
USAF test satellite: High orbit, visible for long periods of time - (information contributed by Michael D Kenny) |
137.142 |
Eutelsat I F4 1987-078B 18351 |
CW |
Comms: Regular, intermittent signal possibly due to vehicle rotation causing periodic flow of power from solar panels |
180.006 |
Fengyun 1C 1999-025A 25730 |
CW carrier on centre frequency plus telemetry sidebands at +/- 5 kHz- and further carriers at +/- 10 kHz |
Meteorological imaging: Active transmitter until 2007 February when attacked in ground-based interceptor test - Coherent transmission at 480.017 MHz |
480.019 |
Fengyun 1C 1999-025A 25730 |
CW - Doppler tracking beacon |
Meteorological imaging: Active transmitter until 2007 February when attacked in ground-based interceptor test - Coherent transmission at 180.007 MHz |
180.007 |
Fengyun 1D 2002-024B 27431 |
CW carrier on centre frequency plus telemetry sidebands at +/- 5 kHz- and further carriers at +/- 10 kHz |
Meteorological imaging: Coherent transmission at 480.017 MHz, also transmits 2201.050 MHz |
480.017 |
Fengyun 1D 2002-024B 27431 |
CW - Doppler tracking beacon |
Meteorological imaging: Coherent transmission at 180.007 MHz, also transmits 2201.050 MHz |
2201.050 |
Fengyun 1D 2002-024B 27431 |
CW |
Meteorological imaging: Appears to be continuous transmission - first noted 2010 September, also transmits 180.007 and 480.017 MHz |
2264.700 |
Fengyun 3A 2008-026A 32958 |
CW carrier + sidebands |
Meteorological imaging: Frequency reported 2008, also transmits 2246.400 MHz, below horizon from UK |
2246.400 |
Fengyun 3A 2008-026A 32958 |
CW carrier + sidebands |
Meteorological imaging: Frequency reported 2008, also transmits 2264.700 MHz, below horizon from UK |
150.012 |
Formosat 3A 2006-011A 29047 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
1066.752 |
Formosat 3A 2006-011A 29047 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
400.032 |
Formosat 3A 2006-011A 29047 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
150.012 |
Formosat 3B 2006-011B 29048 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
400.032 |
Formosat 3B 2006-011B 29048 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
1066.752 |
Formosat 3B 2006-011B 29048 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
150.012 |
Formosat 3C 2006-011C 29049 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032MHz and 1066.752 MHz |
400.032 |
Formosat 3C 2006-011C 29049 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 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
|
1066.752 |
Formosat 3C 2006-011C 29049 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
150.012 |
Formosat 3D 2006-011D 29050 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
400.032 |
Formosat 3D 2006-011D 29050 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
1066.752 |
Formosat 3D 2006-011D 29050 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
150.012 |
Formosat 3E 2006-011E 29051 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
400.032 |
Formosat 3E 2006-011E 29051 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
1066.752 |
Formosat 3E 2006-011E 29051 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
400.032 |
Formosat 3F 2006 29052 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz |
1066.752 |
Formosat 3F 2006 29052 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz |
150.012 |
Formosat 3F 2006 29052 |
CW |
Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz |
150.012 |
Geosat 1985-021A 15595 |
CW - Doppler tracking beacon |
Oceanography - wave height measurement: 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 |
400.032 |
Geosat 1985-021A 15595 |
CW - Doppler tracking beacon |
Oceanography - wave height measurement: 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 |
150.012 |
GFO 1998-007A 25157 |
CW - Doppler tracking beacon |
Oceanography - wave height measurement: Geosat Follow On satellite - Coherent transmission at 400.032 MHz and also transmitted at 2207.5 MHz. Ceased to transmit 2008 November. |
400.032 |
GFO 1998-007A 25157 |
CW - Doppler tracking beacon |
Oceanography - wave height measurement: Geosat Follow On - Coherent transmission at 150.012 MHz and also transmittedat 2207.5 MHz. Ceased to transmit 2008 November. |
2207.487 SGLS 2 |
GFO 1998-007A 25157 |
CW carrier plus side-bands |
Oceanography - wave height measurement: Geosat Follow On - Also transmitted at 150.012 MHz and 400.032 MHz. Ceased to transmit 2008 November. |
263.086 |
Gonets D1-1 1996-009A 23787 |
Data transmission as messages are forwarded |
Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
245.157 |
Gonets D1-1 1996-009A 23787 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band |
265.059 |
Gonets D1-2 1996-009B 23788 |
Data transmission as messages are forwarded |
Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
245.157 |
Gonets D1-2 1996-009B 23788 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band |
265.137 |
Gonets D1-3 1996-009C 23789 |
Data transmission as messages are forwarded |
Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 13.
May now be silent, no Message Signal detected 2009 Sept. |
264.750 |
Gonets D1-4 1997-006D 24728 |
Data transmission as messages are forwarded |
Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
245.157 |
Gonets D1-4 1997-006D 24728 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band |
264.400 |
Gonets D1-5 1997-006E 24729 |
Data transmission as messages are forwarded |
Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
245.157 |
Gonets D1-5 1997-006E 24729 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band |
262.910 |
Gonets D1-6 1997 24730 |
Data transmission as messages are forwarded |
Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
245.157 |
Gonets D1-6 1997 24730 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band |
262.910 |
Gonets D1-7 2001-058D 27058 |
Data transmission as messages are forwarded |
Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8. |
245.157 |
Gonets D1-7 2001-058D 27058 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band |
244.512 |
Gonets D1-8 2001-058E 27059 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: 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. |
261.035 |
Gonets D1-8 2001-058E 27059 |
Data transmission as messages are forwarded |
Store and Forward communications: 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. |
262.910 |
Gonets D1-9 2001 27060 |
Data transmission as messages are forwarded |
Store and Forward communications: Frequency is changed occasionally - entry updated 2009 Mar 8.
Message Signal at 261.035 MHz. |
245.157 |
Gonets D1-9 2001 27060 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band |
244.999 |
Gonets M-2 2010-043A 37152 |
Data transmission as messages are forwarded |
Store and Forward communications: Message Signal at 388.688 MHz. |
388.688 |
Gonets M-2 2010-043A 37152 |
Message Signal every 60s, silent when receiving data message from ground |
Store and Forward communications: Stored messages are transmitted at 244.999 MHz. |
388.688 |
Gonets M-3
2012-041B 38734 |
Message Signal every 60s or 120s depending on the operating mode, silent when receiving data message from ground. |
Store and Forward communications: Stored messages are transmitted at 244.999 MHz. |
388.688 |
Gonets M-4 2012-041D 38736 |
Message Signal every 60s or 120s depending on the operating mode, silent when receiving data message from ground. |
Store and Forward communications: Stored messages are transmitted at 244.999 MHz. |
2273.520 |
Haiyang 1B 2007-010A 31113 |
CW plus data sidebands |
Oceanic Remote Sensing: Weak |
2241.600 |
Huan Jing 1A 2008-041A 33320 |
CW plus data side-bands |
Disaster monitoring within China: Part of constellation |
2209.797 |
Huan Jing 1B 2008-041B 33321 |
CW plus data sidebands |
Disaster monitoring within China: Strong, Part of constellation |
136.410 |
Isis 1 1969-009A 3669 |
CW |
Ionosphere studies: (information contributed by Michael D Kenny) |
130.167 |
ISS 1998-067A 25544 |
Medium bandwidth FM voice |
Space station: 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 |
Ranging pulses |
Space station: 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 |
143.625 |
ISS 1998-067A 25544 |
Medium bandwidth FM voice |
Space station: 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 |
Amateur Radio downlink frequency |
Space station: Amateur radio downlink from US segment - see NASA's ARISS Page |
145.825 |
ISS 1998-067A 25544 |
Amateur Radio downlink frequency |
Space station: Amateur radio downlink from US segment - see NASA's ARISS Page |
628.000 |
ISS 1998-067A 25544 |
FM telemetry - sidebands at +/- 128 kHz |
Space station: 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 |
FM telemetry - sidebands at +/- 128 kHz |
Space station: 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 |
FM telemetry - sidebands at +/- 128 kHz |
Space station: 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 |
FM telemetry - sidebands at +/- 128 kHz |
Space station: 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. |
2263.600 |
Kaguya 2007-039A 32054 |
CW Carrier plus side-bands |
Lunar orbiting satellite: 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 |
145.950 |
Kedr 1998-067CK 37772 |
Automatic switching between several transmission modes including BPSK telemetry |
Amateur radio satellite released during Russian EVA from ISS 2011 Aug 3, still operating at the time of re-entry: Ceased to operate on re-entry 2012 Jan 4 |
145.919 |
Kedr 1998-067CK 37772 |
CW - morse code telemetry |
Amateur radio satellite released during Russian EVA from ISS 2011 Aug 3, still operating at the time of re-entry: Only transmitted at this frequency when 145.950 MHz was being used for BPSK-1000 digital telemetry transmission |
145.939 |
Kedr 1998-067CK 37772 |
CW - morse code telemetry |
Amateur radio satellite released during Russian EVA from ISS 2011 Aug 3, still operating at the time of re-entry: Only used when the digital telemetry sytem switched to backup BPSK-400 mode |
2298.525 |
Mars Orbiter 2013-060A 39370 |
- |
Mars exploration: |
2200.647 |
Meteor M-1 2009-049A 35865 |
CW |
Meteorology: Appears to be continuous transmission - first noted 2010 September |
435.360 |
MiR 2012-041C 38735 |
Multiple side bands, varying data content |
Technology: Noted while checking payloads of 2012-043 Launch |
2282.500 SGLS 17 |
MSX 1996-024A 23851 |
AM - 1 kHz tone |
Missile detection experiments: Midcourse Space Experiment, infrared sources with a view to improved design of missile detecting sensors - Frequency Information contributed by the late Ivan Artner |
400.552 |
Munin 2000-075C 26621 |
AM - modem-type databursts |
Auroral research - Sweden: Telemetry but silent since 2001 Feb 12 (shortly after launch) probably due to onboard computer failure - no longer active |
150.000 |
Nadezhda
|
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Navigation - plus Search and Rescue monitoring: Several satellites - the system is no longer operational, has been silent since 2003 November 26 - Coherent transmission at 400.000 MHz |
400.000 |
Nadezhda
|
CW - Doppler tracking beacon |
Navigation - plus Search and Rescue monitoring: Coherent transmission at 150.000 MHz - no longer active (see 150 MHz note) |
2227.481 SGLS 6 |
NATO 4A 1991-001A 21047 |
PSK with sub-carrier, 1024 kHz |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2227.476 SGLS 6 |
NATO 4B 1993-076A 22921 |
CW carrier plus side-bands |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
465.000 |
Navid 2012-005A 38075 |
|
Imaging satellite: Images reported successfully returned, may only be transmitting over Iraq, uplink at 401 MHz |
136.500 |
Nimbus 4 1970-025A 4362 |
CW - sometimes modulated |
Meteorology (including imaging): Payload no longer operational - (information contributed by Michael D Kenny) |
136.650 |
NNS O-2 1964-083D 965 |
CW Carrier plus telemetry tones |
Navigation: Second operational TRANSIT navsat, navigation system failed soon after launch but transmitter is still active (information contributed by Michael D Kenny) |
137.500 |
NOAA 6 1979-057A 11416 |
CW - carrier only |
Meteorological imaging: Inactive satellite but reportedly transmitting |
136.770 |
NOAA 9 1984-123A 15427 |
CW |
Formerly meteorological imaging: Telemetry frequency, transmission is intermittent - (information contributed by Michael D Kenny) - Also has a transmission at 137.500 MHz |
137.500 |
NOAA 9 1984-123A 15427 |
Tone for 6 seconds out of every 25 seconds (periods vary - these are averages) |
Formerly meteorological imaging: 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 |
137.770 |
NOAA 11 1988-089A 19531 |
CW Doppler Beacon and telemetry |
Meteorological imaging: Continuous transmission when operational - (information contributed by Michael D Kenny) - De-commissioned 2004 June 16 |
2247.500 SGLS 10 |
NOAA 11 1988-089A 19531 |
Cyclic carrier - approx 4s on then 4s off |
Meteorological imaging: 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) |
137.500 |
NOAA 12 1991-032A 21263 |
APT at 4 lines per second - interlaced visible light and infrared images |
Meteorological imaging: Switched off occasionally when transmissions conflict with those from NOAA 15 - Also transmits at 137.770 MHz - De-commissioned 2007 Aug 10 |
137.770 |
NOAA 12 1991-032A 21263 |
CW Doppler Beacon and telemetry |
Meteorological imaging: Also transmitted at 137.500 MHz - De-commissioned 2007 Aug 10 |
137.625 |
NOAA 14 1994-089A 23455 |
APT at 4 lines per second - interlaced visible light and infrared images |
Meteorological imaging: Switched off occasionally when transmissions conflict with those from NOAA 17 - Also transmits at 137.770 MHz - Decommissioned 2007 May 23 |
137.770 |
NOAA 14 1994-089A 23455 |
CW Doppler Beacon and telemetry |
Meteorological imaging: Also transmits at 137.625 MHz - Decommissioned 2007 May 23 |
137.350 |
NOAA 15 1998-030A 25338 |
CW Doppler Beacon and telemetry |
Meteorological imaging: Continuous transmission -(information contributed by Michael D Kenny) - Also transmits at 137.500 MHz |
137.500 |
NOAA 15 1998-030A 25338 |
APT at 4 lines per second - interlaced visible light and infrared images |
Meteorological imaging: Switched off occasionally when transmissions conflict with those from NOAA 12 - Also transmits at 137.350 MHz |
137.350 |
NOAA 16 2000-055A 26536 |
CW Doppler Beacon and telemetry |
Formerly meteorological imaging: Continuous transmission -(information contributed by Michael D Kenny) - Also transmits at 137.500 MHz |
137.625 |
NOAA 17 2002-032A 27453 |
APT at 4 lines per second - interlaced visible light and infrared images |
Meteorological imaging: Switched off occasionally when transmissions conflict with those from NOAA 14 |
137.770 |
NOAA 17 2002-032A 27453 |
CW Doppler Beacon and telemetry |
Meteorological imaging: Also transmits at 137.625 MHz |
137.100 |
NOAA 18 2005-018A 28654 |
APT at 4 lines per second - interlaced visible light and infrared images |
Meteorological imaging: Revised frequency as of 2006 Jan 4, changed from 137.9125 MHz |
137.913 |
NOAA 18 2005-018A 28654 |
APT at 4 lines per second - interlaced visible light and infrared images |
Meteorological imaging: Frequency probably not active - changed to 137.100 MHz (2006 Jan 4?) |
2247.500 SGLS 10 |
NOAA 19 2009-005A 33591 |
Data |
Metsat: STX4 transmitter - used during launch and contingency, occasionally heard from orbit and heard to switch on and off, detected 2009 Oct |
2250.000 |
Oceansat P2 2009-051A 35931 |
CW carrier plus sidebands |
Ocean Studies: Sun-synchronous orbit, Indian satellite |
465.000 |
Omid 2009-004A 33506 |
AM - multiple sidebands with 25 kHz bandwidth |
Testing comms up/down links: Switched on and off by onboard timer programmed from the ground |
2277.485 SGLS 16 |
OPS 4029 1981-107A 12930 |
CW carrier plus side-bands |
Multi-tasking military satellite at 41° west longitude?: Geosynchronous orbit Frequency Information contributed by the late Ivan Artner |
137.410 |
OPS 7613-6 1969-082E 4237 |
CW |
USAF test satellite: (information contributed by Michael D Kenny) |
137.380 |
OPS 7613-1 1969-082B 4256 |
Mixed modulation (PAM/FM/AM) |
Navigation technology: (information contributed by Michael D Kenny) |
137.080 |
OPS 7898-2 1971-110C 5680 |
CW |
US military satellite: (information contributed by Michael D Kenny) |
2237.518 SGLS 8 |
OPS 3151 1977-007A 9803 |
CW carrier plus side-bands |
DSP - Missile early warning: Defunct satellite in geosynchronous 'graveyard' orbit - Frequency Information contributed by the late Ivan Artner |
137.200 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz |
137.225 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz |
137.250 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz |
137.440 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies, individual satellites switch between them - Also transmits at 400.100 MHz |
137.460 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies, individual satellites switch between them - Also transmits at 400.100 MHz |
137.663 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz |
137.688 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz |
137.713 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz |
137.738 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz |
137.800 |
Orbcomm
|
Digital data - transmitted to/from mobile terminals |
Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz |
400.100 |
Orbcomm
|
CW - Doppler tracking beacon |
Mobile telephony: Several satellites - Also transmitting digitised telephony signals at various frequencies 137-138 MHz (see individual entries) |
149.988 |
Oscar 27 1987-080A 18361 |
FM telemetry (tones) +/- 2.4 kHz from carrier |
Ionospheric modelling for US military (NIMS): 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 |
399.968 |
Oscar 27 1987-080A 18361 |
Modulated CW carrier |
Ionospheric modelling for US military (NIMS): 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 |
149.979 |
Oscar 29 1987-080B 18362 |
Modulated CW carrier |
Ionospheric modelling for US military (NIMS): 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 |
399.944 |
Oscar 29 1987-080B 18362 |
Modulated CW carrier |
Ionospheric modelling for US military (NIMS): 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 |
149.988 |
Oscar 23 1988-033A 19070 |
FM telemetry (tones) +/- 2.4 kHz from carrier |
Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one) |
399.968 |
Oscar 23 1988-033A 19070 |
Modulated CW carrier |
Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one) |
149.988 |
Oscar 32 1988-033B 19071 |
FM telemetry (tones) +/- 2.4 kHz from carrier |
Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one) |
399.968 |
Oscar 32 1988-033B 19071 |
Modulated CW carrier |
Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one) |
149.988 |
Oscar 25 1988-074A 19419 |
FM telemetry (tones) +/- 2.4 kHz from carrier |
Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one) |
399.968 |
Oscar 25 1988-074A 19419 |
Modulated CW carrier |
Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one) |
149.979 |
Oscar 31 1988-074B 19420 |
FM telemetry (tones) +/- 2.4 kHz from carrier |
Ionospheric modelling for US military (NIMS): 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) |
399.944 |
Oscar 31 1988-074B 19420 |
Modulated CW carrier |
Ionospheric modelling for US military (NIMS): 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) |
150.012 |
Picosat 9 2001-043B 26930 |
CW - Doppler tracking beacon |
USAF Space Test Program (STEP): Coherent transmission at 400.032 MHz - Ceased to transmit late-2004 |
400.032 |
Picosat 9 2001-043B 26930 |
CW - Doppler tracking beacon |
USAF Space Test Program (STEP): Detected being switched on and off over Europe, not continuously active - Coherent transmission at 150.012 MHz - Ceased to transmit late-2004 |
166.000 |
Progress M-M
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
ISS supplies ferry: 2008- |
922.763 |
Progress M-M
|
CW carrier. |
ISS supplies ferry: Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency. 2008- |
2264.725 |
QuikScat 1999-034A 25789 |
CW + sidebands |
Ocean surface wind measurement using radar: Stop-gap mission launched to cover for a similar instrument aboard NSCAT, strong signal |
150.012 |
RADCAL 1993-041A 22698 |
CW - Doppler tracking beacon |
Radar calibration: Radar Calibration satellite - Coherent transmission at 400.032 MHz, operation is intermittent |
400.032 |
RADCAL 1993-041A 22698 |
CW - Doppler tracking beacon |
Radar calibration: Radar Calibration satellite - Coherent transmission at 150.012 MHz, operation is intermittent |
465.000 |
Rasad 1 2011-025A 37675 |
|
Testing gravity gradient stabilisation and, possibly, Earth imaging: Uplink at 401 MHz |
400.550 |
Resurs-O1 1998-043A 25394 |
CW Spread Spectrum |
Remote sensing: 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 |
2250.054 |
RISat 1 2012-017A 38248 |
- |
Radar imaging: Identified by Sven Grahn on day of launch |
137.300 |
Russian Imaging
|
APT at 2 lines per second |
Meteorological and remote sensing imaging: Frequency not currently active |
137.400 |
Russian Imaging
|
APT at 2 lines per second |
Meteorological and remote sensing imaging: Frequency not currently active |
137.850 |
Russian Imaging
|
APT at 2 lines per second |
Meteorological and remote sensing imaging: Frequency not currently active |
2224.065 |
Shenzhou
|
CW carrier plus side-bands |
Piloted spacecraft: Frequency first detected during the Shenzhou 7 mission (2008 September) by Richard Flagg, Hawaii USA - transmission is probably continuous while in orbit |
243.000 |
Shenzhou
|
Signal content not known |
Piloted spacecraft: Recovery beacon transmitted during descent under parachute - NOTE: this is an international distress frequency |
2229.605 |
Shijian 6A 2004-035A 28413 |
CW carrier + sidebands |
Science/technology experiments: - |
2235.800 |
Shijian 6B 2004-035B 28414 |
CW carrier + sidebands |
Science/technology experiments: Frequency reported 2008 |
2217.367 |
Shiyan 2 2004-046A 28479 |
CW carrier + sidebands |
Science/technology experiments: Strong, possibly pulsating rapidly |
2205.500 |
Shijian 7 2005-024A 28737 |
CW carrier + sidebands |
Science/technology experiments: Frequency reported 2008, also transmits 2227.500 MHz |
2227.500 |
Shijian 7 2005-024A 28737 |
CW carrier + sidebands |
Science/technology experiments: Frequency reported 2008, also transmits 2205.500 MHz |
2213.600 |
Shijian 6C 2006-046A 29505 |
CW carrier + sidebands |
Science/technology experiments: Frequency reported 2008 |
2256.251 |
Shijian 6D 2006-046B 29506 |
CW carrier + sidebands |
Science/technology experiments: Weak signal |
2224.564 |
Shijian 6-03A 2008-053A 33408 |
CW carrier + sidebands |
Science/technology experiments: - |
2235.800 |
Shijian 6-03B 2008-053B 33409 |
CW carrier + sidebands |
Science/technology experiments: Frequency reported by other observers in 2008, but appears to be silent |
2251.446 |
Shijian 6-03B 2008-053B 33409 |
CW carrier + sidebands |
Science/technology experiments: Relatively strong signal |
2230.795 |
Shiyan 3 2008-056A 33433 |
CW carrier + sidebands |
Science/technology experiments: Weak |
136.695 |
Shinsei 1971-080A 5485 |
CW |
Japanese scientific satellite: Continuous transmission - (information contributed by Michael D Kenny) |
2202.447 SGLS 1 |
Sicral 1A 2001-005A 26694 |
CW carrier plus sub-carriers at 293kHz and 297 kHz |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2227.487 SGLS 6 |
Skynet 4C 1990-079A 20776 |
CW carrier plus side-bands |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2227.508 SGLS 6 |
Skynet 4D 1998-002A 25134 |
CW carrier plus side-bands |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2227.497 SGLS 6 |
Skynet 4E 1999-009B 25639 |
CW carrier plus side-bands |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2227.514 SGLS 6 |
Skynet 4F 2001-005B 26695 |
CW carrier plus side-bands |
Comms: Geosynchronous orbit - |
136.800 |
Solrad 7B 1965-016D 1291 |
AM IRIG telemetry channels |
Solar radiation studies (launched 1969): Continuous transmission - (information contributed by Michael D Kenny) |
166.000 |
Soyuz TMA-M
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
ISS Crew ferry: Digital control system, three crew seats, from 2011 |
121.500 |
Soyuz TMA-M
|
Morse code 'AN' recovery beacon and direction finding for recovery teams |
ISS Crew ferry: Digital control system, three crew seats, from 2011 - NOTE: this is an international distress frequency |
922.763 |
Soyuz TMA-M
|
CW carrier. |
ISS Crew ferry: Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency. Digital control system, three crew seats, from 2011 |
121.750 |
Soyuz TMA-M
|
30 kHz deviation FM voice |
ISS Crew ferry: Digital control system, three crew seats, from 2011 |
2217.500 SGLS 4 |
STS
|
CW carrier plus side bands carrying data |
ISS Crew/payload transport: 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, 1981-2011 |
259.700 |
STS
|
AM voice |
ISS Crew/payload transport: 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, 1981-2011 |
145.990 |
Suitsat 2005-035C 28933 |
NFM - extremely weak |
Amateur radio experiment - life expired Orlan spacesuit equipped with a radio transmitter and released from ISS during a crew EVA: 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 |
2207.130 |
Telecom 2C 1995-067A 23730 |
CW carrier plus side-bands |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2205.328 |
Telecom 2D 1996-044B 24209 |
CW carrier plus side-bands |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2232.215 |
Tiangong 1 2011-053A 37820 |
- |
Experimental space laboratory: Frequency reported by Richard Flagg, Hawaii. Continuous transmission. Also transmits 2250.720 MHz. |
2250.720 |
Tiangong 1 2011-053A 37820 |
- |
Experimental space laboratory: Frequency reported by Richard Flagg, Hawaii. Continuous transmission. Also transmits 2232.215 MHz. |
137.500 |
TIROS-N 1978-096A 11060 |
CW - carrier only |
Meteorological imaging: Inactive satellite but reportedly transmitting |
136.235 |
TIROS 10 1965-051A 1430 |
AM - 1.3 kHz tone |
Meteorology: Payload now inactive, radio transmission is not continuous - (information contributed by Michael D Kenny) |
400.000 |
Tsikada
|
CW - Doppler tracking beacon |
Navigation - plus Search and Rescue monitoring: Coherent transmission at 150.000 MHz - no longer active (see 150 MHz note) |
150.000 |
Tsikada
|
FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz |
Navigation - plus Search and Rescue monitoring: Several satellites - the system is no longer operational, has been silent since 2003 November 26 - Coherent transmission at 400.000 MHz |
2247.478 SGLS 10 |
TSX-5 2000-030A 26374 |
CW carrier |
Experiments in advanced space technologies: Frequency is unstable, noted as high as 2247.512 MHz, came back on air 2009 November |
150.012 |
Unknown
|
'Wandering' CW |
Unidentified satellite: Satellite in GEO, possibly graveyard orbit, also transmits 400.032 MHz |
400.032 |
Unknown
|
'Wandering' CW |
Unidentified satellite: Satellite in GEO, possibly graveyard orbit, also transmits 150.012 MHz |
2242.493 SGLS 9 |
USA 8 1985-010B 15543 |
CW carrier plus side-bands |
Probably signals intelligence gathering, from geosynchronous orbit: Frequency information from Greg Roberts |
2242.515 SGLS 9 |
USA 21 1987-015A 17506 |
CW carrier, oscillates in frequency due to satellite spinning at 4.6s per rev |
US mult--tasking intelligence-gathering and communications satellite: 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 |
2202.507 SGLS 1 |
USA 32 1988-078A 19460 |
CW carrier plus side-bands |
Electronic intelligence gathering: Also transmits at 2282.5 MHz but transmissions at the two frequencies are not simultaneous |
2282.507 SGLS 17 |
USA 32 1988-078A 19460 |
CW carrier plus side-bands |
Electronic intelligence gathering: 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 |
2242.500 SGLS 9 |
USA 40 1989-061B 20167 |
CW carrier, oscillates in frequency due to satellite spinning at 5.2s per rev |
US mult--tasking intelligence-gathering and communications satellite: 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 |
2262.493 SGLS 13 |
USA 46 1989-077A 20253 |
PSK with sub-carrier, 1024 kHz |
Comms: Frequency Information contributed by the late Ivan Artner |
2242.496 SGLS 9 |
USA 67 1990-097B 20963 |
PSK with sub-carrier, 1024 kHz |
Multi-tasking military satellite near 75° east longitude: 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 |
2222.508 SGLS 5 |
USA 69 1991-017A 21147 |
CW carrier plus side-bands |
Radar imaging reconnaissance: Frequency Information originally contributed by the late Ivan Artner - later confirmed by other observers |
2232.511 SGLS 7 |
USA 75 1991-080B 21805 |
FM wide-bandwidth data |
Geosynchronous missile early warning at 38° west longitude: Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner |
2237.496 SGLS 8 |
USA 75 1991-080B 21805 |
CW carrier plus side-bands |
Geosynchronous missile early warning at 38° west longitude: Defense Support Program - Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner |
250.150 |
USA 76 1991-076D 21808 |
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 |
US Military ocean surveillance: 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) |
2277.500 SGLS 16 |
USA 78 1992-006A 21873 |
CW carrier plus side-bands |
Comms: Defunct satellite in geostationary drift orbit - Frequency Information contributed by the late Ivan Artner |
258.150 |
USA 81 1992-023A 21949 |
AM - data plus modulated tones at 4.8 and 9.6 kHz |
Electronic intelligence gathering: 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 |
2257.530 SGLS 12 |
USA 81 1992-023A 21949 |
CW carrier plus side-bands |
Electronic intelligence gathering: Also transmits at 2202.5 MHz and 258.150 MHz, , frequency may be active intermittently |
2202.513 SGLS 1 |
USA 81 1992-023A 21949 |
CW carrier plus side-bands |
Electronic intelligence gathering: Also transmits at 2257.530 MHz, thought to be no longer active but detected early 2011 |
2242.500 SGLS 9 |
USA 89 1992-086B 22518 |
CW carrier plus side-bands |
US mult--tasking intelligence-gathering and communications satellite, now deactivated: 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 |
2252.490 SGLS 11 |
USA 95 1993-056A 22787 |
CW carrier plus side-bands |
Comms: Frequency Information contributed by the late Ivan Artner |
2257.512 SGLS 12 |
USA 97 1993-074A 22915 |
CW carrier plus side-bands |
Comms: Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
243.825 |
USA 99 1994-009A 22988 |
Spread spectrum signal - +/- 64 kHz from centre frequency |
Comms: 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! |
2262.509 SGLS 13 |
USA 99 1994-009A 22988 |
CW carrier plus side-bands |
Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2232.496 SGLS 7 |
USA 105 1994-054A 23223 |
CW carrier plus side-bands |
Multi-tasking military satellite at 27°.5 west longitude: Geosynchonous orbit - Frequency Information contributed by the late Ivan Artner |
2277.500 SGLS 16 |
USA 105 1994-054A 23223 |
CW carrier plus side-bands |
Multi-tasking military satellite at 27°.5 west longitude: Frequency Information contributed by the late Ivan Artner |
2252.500 SGLS 11 |
USA 109 1995-015A 23533 |
CW carrier plus side-bands |
Military meteorological satellite: Defense Meteorological Satellite Program, - Frequency Information contributed by the late Ivan Artner |
2237.515 SGLS 8 |
USA 109 1995-015A 23533 |
CW + side-bands |
Military meteorological satellite: Defense Meteorological Satellite Program |
2242.485 SGLS 9 |
USA 116 1995-066A 23728 |
CW carrier + sidebands |
Digital transmission, multi-tasking reconnaissance satellite: 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 |
2232.495 SGLS 7 |
USA 118 1996-026A 23855 |
CW carrier plus side-bands |
Multi-tasking military satellite at 13° west longitude?: Geosynchonous orbit - Frequency Information contributed by the late Ivan Artner |
250.158 |
USA 121 1996-029D 23862 |
AM - 4.8 kHz data tone |
US Military ocean surveillance: 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) |
243.695 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 1, no longer transmitting. |
243.705 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 2, no longer transmitting. |
243.710 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 3, no longer transmitting. |
243.715 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 4, no longer transmitting. |
243.720 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 5, no longer transmitting. |
243.725 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 6, no longer transmitting. |
243.730 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 7, no longer transmitting. |
243.735 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 8, no longer transmitting. |
243.740 |
USA 125 1996-038A 23945 |
Channel usually occupied by an unmodulated carrier |
US comms and intelligence gathering: AFSATCOM Channel 9, no longer transmitting. |
243.745 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 10, no longer transmitting. |
243.750 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 11, no longer transmitting. |
243.760 |
USA 125 1996-038A 23945 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 12, no longer transmitting. |
2242.498 SGLS 9 |
USA 125 1996-038A 23945 |
CW carrier plus side-bands |
US comms and intelligence gathering: 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. |
2252.493 SGLS 11 |
USA 127 1996-042A 23967 |
PSK with sub-carrier, 1.7 MHz |
Comms: Frequency Information contributed by the late Ivan Artner |
2242.485 SGLS 9 |
USA 129 1996-072A 24680 |
CW carrier plus side-bands |
Imaging reconnaissance: Possible small error in the frequency measurement |
2237.500 SGLS 8 |
USA 131 1997-012A 24753 |
CW + side-bands |
Military meteorological satellite$: Defense Meteorological Satellite Program |
2222.502 SGLS 5 |
USA 133 1997-064A 25017 |
CW carrier plus side-bands |
Radar imaging reconnaissance: Frequency Information contributed by the late Ivan Artner |
243.695 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 1, no longer transmitting. |
243.705 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 2, no longer transmitting. |
243.710 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 3, no longer transmitting. |
243.715 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 4, no longer transmitting. |
243.720 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 5, no longer transmitting. |
243.725 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 6, no longer transmitting. |
243.730 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 7, no longer transmitting. |
243.735 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 8, no longer transmitting. |
243.740 |
USA 137 1998-005A 25148 |
Channel usually occupied by an unmodulated carrier |
US comms and intelligence gathering: AFSATCOM Channel 9, no longer transmitting. |
243.745 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 10, no longer transmitting. |
243.750 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 11, no longer transmitting. |
243.760 |
USA 137 1998-005A 25148 |
CW - RTTY-style data |
US comms and intelligence gathering: AFSATCOM Channel 12, no longer transmitting. |
2242.495 SGLS 9 |
USA 137 1998-005A 25148 |
CW carrier plus side-bands |
US comms and intelligence gathering: 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. Reported still active 2013 May. Lost to visual observers because of changes brought about gravity effects and air drag on the eccentric orbit. |
2237.495 SGLS 8 |
USA 142 1999-017A 25669 |
CW carrier plus side-bands |
Missile early warning: Defense Support Program, suffered mission failure, satellite stranded in geosynchronous transfer orbit - Frequency Information contributed by the late Ivan Artner |
2252.490 SGLS 11 |
USA 146 1999-063A 25967 |
PSK with sub-carrier, 1.7 MHz |
Comms: Frequency Information contributed by the late Ivan Artner - co-located so this may be UFO-F11 |
150.012 |
USA 147 1999-067A 25991 |
CW - Doppler tracking beacon |
Military meteorological satellite: 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 |
400.032 |
USA 147 1999-067A 25991 |
CW - Doppler tracking beacon |
Military meteorological satellite: 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 . |
2237.517 SGLS 8 |
USA 147 1999-067A 25991 |
CW - wide sweeping carrier |
Military meteorological satellite: 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) |
2252.499 SGLS 11 |
USA 147 1999-067A 25991 |
CW carrier plus side-bands |
Military meteorological satellite: 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) |
2207.535 SGLS 2 |
USA 147 1999-067A 25991 |
CW carrier plus side-bands |
Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2252.5 MHz, 150.012 MHz and 400.032 MHz (the last two are the RADCAL frequencies) |
2232.498 SGLS 7 |
USA 149 2000-024A 26356 |
FM wide-bandwidth data |
Geosynchronous missile early warning at 8°.5 east longitude: Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner |
2237.480 SGLS 8 |
USA 149 2000-024A 26356 |
PSK with sub-carrier, 1024 kHz |
Geosynchronous missile early warning at 8°.5 east longitude: Defense Support Program - Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner |
2222.476 SGLS 5 |
USA 152 2000-047A 26473 |
CW carrier plus side-bands |
Military radar reconnaissance satellite: - |
2257.508 SGLS 12 |
USA 153 2000-065A 26575 |
PSK with sub-carrier, 1024 kHz |
Comms: Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
251.325 |
USA 155 2000-080A 26635 |
AM - 4.8 kHz data tone |
US intelligence-related satellite near 10° west longitude: 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. |
268.675 |
USA 155 2000-080A 26635 |
AM - 4.8 kHz data tone |
US intelligence-related satellite near 10° west longitude: 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. |
2242.486 SGLS 9 |
USA 155 2000-080A 26635 |
PSK with sub-carrier, 1024 kHz |
US intelligence-related satellite near 10° west longitude: 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. |
252.675 |
USA 155 2000-080A 26635 |
AM - high speed (19.2 kb/s?) data transmission |
US intelligence-related satellite near 10° west longitude: 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. |
258.775 |
USA 155 2000-080A 26635 |
AM - 4.8 kHz data tone |
US intelligence-related satellite near 10° west longitude: 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. |
2232.497 SGLS 7 |
USA 159 2001-033A 26880 |
FM wide-bandwidth data |
Geosynchronous missile early warning at 70° east longitude: Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner |
2237.499 SGLS 8 |
USA 159 2001-033A 26880 |
PSK with sub-carrier, 1024 kHz |
Geosynchronous missile early warning at 70° east longitude: Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner |
2277.500 SGLS 16 |
USA 160 p/l 1 2001-040A 26905 |
CW carrier plus side-bands |
Ocean SIGINT: Navy Ocean Surveillance System - Frequency Information contributed by the late Ivan Artner, also transmits at 2232.5 MHz |
2232.495 SGLS 7 |
USA 160 p/l 1 2001-040A 26905 |
CW carrier plus side-bands |
Ocean SIGINT: Also reported to transmit 2277.5 MHz |
2242.485 SGLS 9 |
USA 161 2001-044A 26934 |
CW carrier + sidebands |
Digital transmission, multi-tasking reconnaissance satellite: - |
250.075 |
USA 162 2001-046A 26948 |
AM - 4.8 kHz data tone |
US intelligence-related satellite near 144° west longitude, possibly including communications: 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 |
263.225 |
USA 162 2001-046A 26948 |
AM - high speed (19.2 kb/s?) data transmission |
US intelligence-related satellite near 144° west longitude, possibly including communications: 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 |
267.550 |
USA 162 2001-046A 26948 |
AM - 4.8 kHz data tone |
US intelligence-related satellite near 144° west longitude, possibly including communications: 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 |
2242.500 SGLS 9 |
USA 162 2001-046A 26948 |
CW carrier (plus side-bands?) |
US intelligence-related satellite near 144° west longitude, possibly including communications: Reported frequency for satellite in geosynchronous orbit - also reported to transmit at 250.075 MHz, 256.475, 263.225 and 267.550 MHz |
256.475 |
USA 162 2001-046A 26948 |
AM - 4.8 kHz data tone |
US intelligence-related satellite near 144° west longitude, possibly including communications: 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 |
2262.507 SGLS 13 |
USA 164 2002-001A 27168 |
CW carrier plus side-bands |
Comms: Also transmits 2267.513 MHz, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2267.513 SGLS 14 |
USA 164 2002-001A 27168 |
CW carrier plus side-bands |
Comms: Occasional transmission - Also transmits 2262.507 MHz MHz, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2257.511 SGLS 12 |
USA 167 2003-008A 27691 |
CW carrier plus side-bands |
Comms: Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner |
2222.481 SGLS 5 |
USA 172 2003-048A 28054 |
CW carrier plus side-bands |
Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2207.5, MHz, 2237.5 MHz and 2247.5 MHz |
2237.512 SGLS 8 |
USA 172 2003-048A 28054 |
CW + side-bands |
Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2207.5 MHz, 2222.473 MHz and 2247.415 MHz |
2207.510 SGLS 2 |
USA 172 2003-048A 28054 |
CW carrier plus side-bands |
Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2222.5 MHz, 2237.5 MHz and 2247.5 MHz |
2222.500 SGLS 5 |
USA 173 p/l 1 2003-054A 28095 |
CW carrier plus side-bands |
Ocean SIGINT: Navy Ocean Surveillance System - Also transmits at 2232.5 MHz. Frequency Information contributed by the late Ivan Artner |
2232.498 SGLS 7 |
USA 173 p/l 1 2003-054A 28095 |
CW carrier plus side-bands |
Ocean SIGINT: Transmission may be from 28097 (NOSS 3-2 follower). Also reported to transmit at 2222.5 MHz |
2262.499 SGLS 13 |
USA 174 2003-057A 28117 |
PSK with sub-carrier, 1.7 MHz |
Comms: Frequency Information contributed by the late Ivan Artner - co-located so this may be UFO-F10 |
251.700 |
USA 179 2004-034A 28384 |
AM - 4.8 kHz data tone |
US intelligence-related satellite: 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 |
2242.503 SGLS 9 |
USA 179 2004-034A 28384 |
CW carrier plus side-bands - strong |
US intelligence-related satellite: 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 |
256.375 |
USA 179 2004-034A 28384 |
AM - 4.8 kHz data tone |
US intelligence-related satellite: 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 |
2222.500 SGLS 5 |
USA 181 p/l 1 2005-004A 28537 |
CW carrier plus side-bands |
Navy Ocean Surveillance System SIGINT: Navy Ocean Surveillance System - also transmits at 2232.5 MHz and 2277.5 MHz - latter frequency Information contributed by the late Ivan Artner |
2232.500 SGLS 7 |
USA 181 p/l 1 2005-004A 28537 |
CW carrier plus side-bands |
Navy Ocean Surveillance System SIGINT: Also reported to transmit at 2222.5 MHz and 2277.5 MHz - latter frequency Information contributed by the late Ivan Artner |
2277.500 SGLS 16 |
USA 181 p/l 1 2005-004A 28537 |
CW carrier plus side-bands |
Navy Ocean Surveillance System SIGINT: Navy Ocean Surveillance System, also transmits at 2222.5 MHz and 2232.5 MHz |
2242.505 SGLS 9 |
USA 186 2005-042A 28888 |
CW carrier + sidebands |
Reconnaissance satellite: - |
2232.517 SGLS 7 |
USA 184 2006-027A 29249 |
CW carrier plus side-bands |
: Also transmits at 2277.5 MHz - Frequency Information contributed by the late Ivan Artner |
2277.520 SGLS 16 |
USA 184 2006-027A 29249 |
CW carrier plus side-bands |
: Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner |
2222.497 SGLS 5 |
USA 191 2006-050A 29522 |
CW carrier plus side-bands |
Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2237.515 MHz and (according to observations by the late Ivan Artner) at 2249.415 MHz |
2237.514 SGLS 8 |
USA 191 2006-050A 29522 |
CW |
Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2222.5 MHz and 2247.415 MHz |
2249.500 |
USA 193 2006-057A 29651 |
CW carrier plus side-bands |
US intelligence-related satellite: Satellite failed soon after launch 2006 December - no longer transmitting Frequency Information contributed by the late Ivan Artner |
2232.498 SGLS 7 |
USA 194 p/l 1 2007-027A 31701 |
CW carrier + side bands |
Navy Ocean Surveillance System - ocean SIGINT: Transmission may be from the NOSS 3-4 follower |
2232.504 SGLS 7 |
USA 197 2007-054A 32287 |
CW carrier plus side-bands
|
Geosynchronous missile early warning: Defense Support Program - Frequency Information contributed by Greg Roberts
|
251.275 |
USA 198 2007-060A 32378 |
AM - 4.8 kHz data tone plus various test modes |
Intelligence-related satellite, possibly including communications: 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 |
2242.504 SGLS 9 |
USA 198 2007-060A 32378 |
CW carrier plus side-bands - strong |
Intelligence-related satellite, possibly including communications: 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. |
251.700 |
USA 198 2007-060A 32378 |
AM - 4.8 kHz data tone |
Intelligence-related satellite, possibly including communications: 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 |
256.375 |
USA 198 2007-060A 32378 |
AM - 4.8 kHz data tone |
Intelligence-related satellite, possibly including communications: 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 |
258.800 |
USA 198 2007-060A 32378 |
AM - 4.8 kHz data tone plus various test modes |
Intelligence-related satellite, possibly including communications: 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 |
2232.498 SGLS 16 |
USA 198 2007-060A 32378 |
CW carrier plus side-bands |
Intelligence-related satellite, possibly including communications: Navy Ocean Surveillance System |
2203.700 |
USA 205 2009-023A 34903 |
CW carrier + sidebands |
Development of missile sensors: Frequency not measured precisely |
2252.506 SGLS 11 |
USA 207 2009-047A 35815 |
CW carrier + sidebands |
Comms: Initial reception reported by Greg Roberts (SA) some 38 minutes after lift-off |
2247.499 SGLS 10 |
USA 208 2009-052A 35937 |
CW carrier plus sidebands |
STSS Demonstrator dual satellite mission together with USA 209 testing missile detection technology: 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. |
2272.514 SGLS 15 |
USA 209 2009-052B 35938 |
CW carrier plus sidebands |
STSS Demonstrator dual satellite mission together with USA 208 testing missile detection technology: 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. |
2222.487 SGLS 5 |
USA 210 2009-057A 35951 |
CW carrier plus side-bands |
Military meteorological satellite: Defense Meteorological Satellite Program |
2237.517 SGLS 8 |
USA 210 2009-057A 35951 |
CW carrier plus sidebands |
Military meteorological satellite: Strong carrier |
2262.505 SGLS 13 |
USA 214 2010-039A 36868 |
CW carrier, for a period after launch, the received frequency was oscillating because of Doppler shift caused by rotation |
Comms: Unable to reach GEO using designated thrusters so manoeuvred to GEO over a long period using its station-keeping thrusters |
2242.506 SGLS 9 |
USA 215 2010-046A 37162 |
CW |
Reconnaissance using radar: Discovered by Bob Christy immediately after launch |
400.180 |
USA 217 2010-062A 37222 |
Trigger pulse for ground ground-based transmitters at 16s intervals |
Military space technology experiments incl Store-Dump comms: Transmission from Ocean Data Telemetry Microsat Link payload to collect data from sensors on such as ocean data buoys or small, unattended ground stations. Transmits only when in range of an active sensor. |
2242.514 SGLS 9 |
USA 224 2011-002A 37348 |
CW carrier + sidebands |
Digital transmission, multi-tasking reconnaissance satellite: 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. |
2242.504 SGLS 9 |
USA 227 2011-011A 37377 |
Carrier + sidebands |
US intelligence-related satellite near 10° west longitude: Continous transmission |
2242.506 SGLS 9 |
USA 234 2012-014A 38109 |
Carrier + sidebands |
Reconnaissance using radar: |
2212.810 |
Yaogan 1 2006-015A 29092 |
CW carrier (+sidebands?) |
Remote sensing with synthetic aperture radar, government and military: 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. |
2295.650 |
Yaogan 1 2006-015A 29092 |
CW carrier (+sidebands?) |
Remote sensing with synthetic aperture radar, government and military: Frequency reported 2008, also transmits 2212.810 MHz. No longer active - Yaogan 1 broke into several pieces 2010 Feb 4. |
2216.527 |
Yaogan 2 2007-019A 31490 |
CW carrier (+sidebands?) |
Optical remote sensing - military or government: - |
2212.809 |
Yaogan 3 2007-055A 32289 |
CW carrier (+sidebands?) |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar: 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 |
2295.650 |
Yaogan 3 2007-055A 32289 |
CW carrier (+sidebands?) |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar: Frequency reported 2008, also transmits 2212.810 MHz |
2216.525 |
Yaogan 4 2008-061A 33446 |
CW carrier (+sidebands?) |
Optical remote sensing - military or government: - |
2220.476 |
Yaogan 5 2008-064A 33456 |
CW carrier (+sidebands?) |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar: Also reportedly transmits 2282.1 MHz |
2282.100 |
Yaogan 5 2008-064A 33456 |
CW carrier (+sidebands?) |
Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar: Frequency reported 2008, also transmits 2220.476 MHz |
2296.500 |
Yaogan 6 2009-021A 34839 |
CW carrier (+sidebands?) |
Digital imaging for remote sensing, government/military use: Frequency reported 2008, also transmits 2280.716 MHz |
2280.716 |
Yaogan 6 2009-021A 34839 |
CW carrier (+sidebands?) |
Digital imaging for remote sensing, government/military use: Weak, also reported at 2296.500 MHz |
2216.527 |
Yaogan 7 2009-069A 36110 |
CW Carrier + sidebands |
Optical remote sensing - military or government: - |
2266.319 |
Yaogan 8 2009-072A 36121 |
Weak CW |
Remote sensing: - |
179.951 |
Ziyuan 2-01 2000-050A 26481 |
CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz |
Remote Sensing: Coherent transmission at 479.865 MHz. No longer transmitting. |
479.865 |
Ziyuan 2-01 2000-050A 26481 |
CW - Doppler tracking beacon |
Remote Sensing: Coherent transmission at at 179.951 MHz. No longer transmitting. |
2207.500 |
Ziyuan 2-03 2004-044A 28470 |
CW carrier + sidebands |
Military reconnaissance: Frequency reported 2008, also transmits at 2220.5 MHz |
2220.500 |
Ziyuan 2-03 2004-044A 28470 |
CW carrier + sidebands |
Military reconnaissance: Frequency reported 2008, also transmits at 2207.5 MHz |
2285.525 |
ZP 1A2 2010-047C 37167 |
Weak CW |
Microelectronics studies: - |