| Freq (MHz) |
Satellite |
Transmission |
Notes |
121.500 |
Soyuz TM
(7K-STM)
|
Morse code 'AN' recovery beacon and direction finding for recovery teams |
Mir & ISS Crew ferry: Space station missions, three crew seats, 1986-2004 - NOTE: this is an international distress frequency |
121.500 |
Soyuz TMA
|
Morse code 'AN' recovery beacon and direction finding for recovery teams |
ISS Crew ferry: Enlarged crew space, updated control systems, three crew seats, 2002-2012- NOTE: this is an international distress frequency |
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 |
121.750 |
Soyuz TM
(7K-STM)
|
30 kHz deviation FM voice |
Mir & ISS Crew ferry: Space station missions, three crew seats, 1986-2002 |
121.750 |
Soyuz TMA
|
30 kHz deviation FM voice |
ISS Crew ferry: Enlarged crew space, updated control systems, three crew seats, 2002-2012 |
121.750 |
Soyuz
TMA-M
|
30 kHz deviation FM voice |
ISS Crew ferry: Digital control system, three crew seats, from 2011 |
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 |
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 |
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 |
145.990 |
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 |
166.000 |
Progress M
(7K-TGM)
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
Mir and ISS supplies ferry: 1998-2011 |
166.000 |
Progress
M1
(7K-TGM)
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
Mir & ISS supplies ferry: Uprated propellant capacity, 2000-2004 |
166.000 |
Progress
M-SO
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
ISS module delivery: 2001 & 2009 |
166.000 |
Progress
M-M
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
ISS supplies ferry: 2008- |
166.000 |
Soyuz TM
(7K-STM)
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
Mir & ISS Crew ferry: Space station missions, three crew seats, 1986-2005 |
166.000 |
Soyuz TMA
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
ISS Crew ferry: Enlarged crew space, updated control systems, three crew seats, 2002-2012 |
166.000 |
Soyuz
TMA-M
|
Telemetry transmission PCM-FM, sidebands ±128 kHz |
ISS Crew ferry: Digital control system, three crew seats, from 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 |
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. |
922.763 |
Progress M
(7K-TGM)
|
CW carrier. |
Mir and ISS supplies ferry: Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency. 1998-2011 |
922.763 |
Progress
M1
(7K-TGM)
|
CW carrier. |
Mir & ISS supplies ferry: Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency. Uprated propellant capacity, 2000-2004 |
922.763 |
Progress
M-SO
|
CW carrier. |
ISS module delivery: Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency. Version flown to deliver ISS components 2001 & 2009 |
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- |
922.763 |
Soyuz TM
(7K-STM)
|
CW carreir |
Mir & ISS Crew ferry: Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency. Space station missions, three crew seats, 1986-2003 |
922.763 |
Soyuz TMA
|
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. Enlarged crew space, updated control systems, three crew seats, 2002-2012 |
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 |
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 |
2270.000 |
Chibis-M 2011-062C
38051 |
|
Lightning studies satellite: Frequency information provided by Sven Grahn |
