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ISS Frequencies

Amateur Radio Frequencies (Note: Only one mode active at a time)

FM VOICE for ITU Region 1: Europe-Middle East-Africa-North Asia
Downlink 145.800
Uplink 145.200

FM VOICE for ITU Region 2&3: North and South America-Caribbean-Greenland-Australia-South Asia
Downlink 145.800
Uplink 144.490

FM U/v VOICE Repeater (Worldwide)
Downlink 145.800
Uplink 437.800

FM V/u with PL VOICE Repeater (Worldwide)
Downlink 437.800
Uplink 145.990 with 67.0 PL

FM L/v VOICE Repeater (Worldwide)
Downlink 145.800
Uplink 1269.650

AX.25 1200 Bd AFSK Packet Radio (Worldwide)
Downlink 145.825
Uplink 145.825

FM SSTV downlink (Worldwide)
Downlink 145.800

UHF Simplex (rarely used)
Downlink 437.550
Uplink 437.550

Other Frequencies

121.125 FM
RS EVA from Orlan suit [Credit N5VHO]

121.75 FM
Downlink from Soyuz-TM (voice). RS EVA from Orlan suit. Soyuz VHF-2. Progress Telemetry. [Credit N5VHO]

130.167 AM
VHF-2 Downlink from Zarya (Service Module). RS EVA to Orlan suits [Credit N5VHO]

143.625 FM
VHF-1 downlink. Main Russian communications channel. Often active over Moskow. You can hear air to ground conversations in Russian. Sometimes English when US crews talk to their NASA representative in Star City. [Credit IZ6BYY]

166.000 AM
Soyuz-TM and Progress M-1 telemetry This Frequency has not been confirmed yet. Please contribute and post your report as comment

632.000 634.000 AM
Zarya telemetry This Frequency has not been confirmed yet. Please contribute and post your report as comment

628.000 630.000 AM
Zvezda telemetry This Frequency has not been confirmed yet. Please contribute and post your report as comment

922.76 CW
Soyuz-TM and Progress M1 beacon This Frequency has not been confirmed yet. Please contribute and post your report as comment

2265.0 Digital
Telementry Downlink This Frequency has not been confirmed yet. Please contribute and post your report as comment

15003.4 Digital
Data downlink This Frequency has not been confirmed yet. Please contribute and post your report as comment

Add new comment 105075 reads
VHF-2 FM

Hi, 27 JUL 2010, ~0915z.
Heard a voice on VHF-2. Unfortunately I set it on AM modulation and hardly heard what they say,
but when i switched to FM modulation,
heard Russian crew talking clearly. Seems like they are quite busy on EVA.
Submitted by 9W6ZUL. on Tue, 2010-07-27 21:13.
reply
Russian VHF frequencies

I can confirm that Russia uses the following VHF downlink frequencies.
ISS VHF-1 - 143.625
ISS VHF-2 - 130.167
RS EVA to suit - 130.167
RS EVA from suits - 121.750 and 121.125
Soyuz VHF-2 - 121.750
Progress telem - 121.75

Kenneth - N5VHO
http://spaceflight.nasa.gov/station/reference/radio/
Support ARISS http://www.amsat-na.com/donation.php (select "Human Spaceflight (ARISS))
Submitted by N5VHO on Thu, 2008-01-24 14:14.
reply
121.750 and 121.125 MHz

Have you intercepted transmissions on all of these frequencies?

Also:

Is your "confirmation" based on reception on any of the frequencies you have listed?

For what is "RS" an abbreviation?

Are the EVA frequencies genuine "downlinks" to Mission control or are they space-to-space frequencies?

What, please, is the frequency of "Soyuz VHF-1"?
Submitted by zarya2 on Thu, 2008-02-14 20:45.
reply
My confirmation is a NASA

My confirmation is a NASA graphic outlining communications for ISS. I have also had most confirmed by reception.
"RS" is the abbreviation used by NASA to refer to Russia. "US" is used for United States.
The Russians use the EVA frequencies for communcitaion between the ISS and their suits. That communication is then relayed to the ground via various communication links. For example, RS EVA to suit - 130.167 means the frequency transmitted by ISS and received by the Orlan suit.
I have no listing for a VHF-1 for the Soyuz in my document.

Kenneth - N5VHO
http://spaceflight.nasa.gov/station/reference/radio/
Support ARISS http://www.amsat-na.com/donation.php (select "Human Spaceflight (ARISS))
Submitted by N5VHO on Fri, 2008-02-15 11:57.
reply
Reception

When you say "most confirmed by reception", which ones have you not received?
Submitted by zarya2 on Fri, 2008-02-15 19:05.
reply
Orlan Comms

Unfortunately, Russian EVA activities never seem to occur during orbits over Houston so I have not had the opportunity to listen to the suit frequencies. Since the other frequencies work, I have no reason to doubt the documentation at this time.

Kenneth - N5VHO
http://spaceflight.nasa.gov/station/reference/radio/
Support ARISS http://www.amsat-na.com/donation.php (select "Human Spaceflight (ARISS))
Submitted by N5VHO on Sat, 2008-02-16 08:22.
reply
130.167

Hi,
The 130.167 freq is very reliable and super strong during EVA and Soyuz undoc ops.
I catch two or three orbits (but not the last) just before reentry of Soyuz.
Sometimes the crew is very quiet - very little said during a 10 minute pass.
Normaly all conversation in Russian.

I have not been able to detect sigs on 121 freqs during EVA.
Of course the TX will be very low power in any case, so my yagis built for 144.1 may be just too much of a dummy load at those fequencies. I will try other antenna next time to see....
Submitted by ZS6TW on Mon, 2008-02-18 15:42.
reply

Отредактировано rw6hp (Вторник, 1 февраля, 2011г. 11:56:46 pm)