ISS FrequenciesAmateur Radio Frequencies (Note: Only one mode active at a time) FM VOICE for ITU Region 1: Europe-Middle East-Africa-North Asia
FM VOICE for ITU Region 2&3: North and South America-Caribbean-Greenland-Australia-South Asia
FM U/v VOICE Repeater (Worldwide)
FM V/u with PL VOICE Repeater (Worldwide)
FM L/v VOICE Repeater (Worldwide)
AX.25 1200 Bd AFSK Packet Radio (Worldwide)
FM SSTV downlink (Worldwide)
UHF Simplex (rarely used)
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 632.000 634.000 AM Zarya telemetry 628.000 630.000 AM Zvezda telemetry 922.76 CW Soyuz-TM and Progress M1 beacon 2265.0 Digital Telementry Downlink 15003.4 Digital Data downlink ________________________________________________________________________ ISS Slow Scan TV (SSTV): |