ISS Frequencies

Amateur Radio Frequencies

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 VOICE Repeater (Worldwide)

         Downlink 145.800

         Uplink 437.800

AX.25 1200 Bd AFSK Packet Radio (Worldwide)

         Downlink 145.825

         Uplink 145.825

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