ISS Frequencies Radio : Tracking of the International Space Station

Freq (MHz)

Satellite

Payload

Signal Type

Notes

121.750

Soyuz TMA-1
(Soyuz 11F732 No211)

2002-050A
27552

ISS Crew transport

Medium bandwidth FM voice

Frequency used during on-orbit operations to and from the Space Station, and reportedly used for recovery beacon during landing module descent - Also transmits at 166 MHz and 922.763 MHz

130.167

ISS
(International Space Station)

1998-067A
25544

Space Station

Medium bandwidth FM voice

VHF-2 channel used as an alternative to VHF-1 (143.625 MHz) during Shuttle/ISS on-orbit operations

130.167

ISS
(International Space Station)

1998-067A
25544

Space Station

Ranging pulses

Used by TORU remote control docking system, usually tested 1-2 days before a Progress docking is due, the Progress return path is at 121.750 MHz

143.625

ISS
(International Space Station)

1998-067A
25544

Space Station

Medium bandwidth FM voice

VHF-1 channel, also used to relay Mission Control to the Shuttle - used as part of the ISS Early Communications System over the USA working with the Wallops Facility and White Sands, detected carrying packet data transmissions during Expedition 1

145.800

ISS
(International Space Station)

1998-067A
25544

Space Station

Amateur Radio downlink frequency

Amateur radio downlink - see NASA's ARISS Page

145.825

ISS
(International Space Station)

1998-067A
25544

Space Station

Amateur Radio downlink frequency

Amateur radio downlink - see NASA's ARISS Page

145.990

Suitsat
(Orlan-M No14)

2005-035C
28933

Amateur radio experiment - life expired Orlan spacesuit equipped with a radio transmitter and released from ISS during a crew EVA

NFM - extremely weak

Voice recording + SSTV image - the low power was due to a failed amplifier - Released from ISS 2006 Feb 3 and battery exhausted 2006 Feb 18

166.000

Soyuz TMA-1
(Soyuz 11F732 No211)

2002-050A
27552

ISS Crew transport

FM telemetry - sidebands at +/- 128 kHz

Transmits during on-orbit operations to and from the ISS, and while docked with the space station - The transmission sounds as a loud buzz with sharp peaks at the sideband frequencies - Also transmits at 121.750 MHz and 922.763 MHz

259.700

STS

ISS Crew/payload transport

AM voice

Detected over Europe occasionally prior to Shuttle re-entry from ISS operations, and with voice during the orbital injection phase from Kennedy SC to Europe - also transmits at 2217.500 MHz

628.000

ISS
(International Space Station)

1998-067A
25544

Space Station

FM telemetry - sidebands at +/- 128 kHz

Transmits on command from within Russia - usually in parallel with 630 MHz - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system

630.000

ISS
(International Space Station)

1998-067A
25544

Space Station

FM telemetry - sidebands at +/- 128 kHz

Transmits on command from within Russia - usually in parallel with 628 MHz - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system

632.000

ISS
(International Space Station)

1998-067A
25544

Space Station

FM telemetry - sidebands at +/- 128 kHz

Transmissions originally reported by Sven Grahn when Zarya first reached orbit - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system and probably no longer in use

634.000

ISS
(International Space Station)

1998-067A
25544

Space Station

FM telemetry - sidebands at +/- 128 kHz

Transmissions originally reported by Sven Grahn when Zarya first reached orbit - Transmits on command from Moscow, similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system and probably no longer in use

922.763

Soyuz TMA-1
(Soyuz 11F732 No211)

2002-050A
27552

ISS crew transport

CW

Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency - transmits during the approach and departure phases from the ISS and occasionally during checks while docked - Also transmits at 121.75 MHz and 166 MHz

2217.500

STS

ISS Crew/payload transport

CW carrier plus side bands carrying data

Integrated voice and data on SGLS Channel 4 - transmitter operates almost continuously while the payload bay doors are open, also transmits at 259.7 MHz

Perubahan?!!

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