ISS Frequencies

Amateur Radio Frequencies – Please note: only one mode active at a time  

*** Current Status of ISS Stations ***

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

• Downlink 145.800

• Uplink 144.490

FM V/u with PL VOICE Repeater, Worldwide

• Downlink 437.800MHz FM; Doppler +-10KHz

• Uplink 145.990MHz FM  with 67.0 Hz PL

FM SSTV downlink, Worldwide

• Downlink 145.800, generally Pd 120 mode

UHF Simplex (rarely used)​

• Downlink 437.550

• Uplink 437.550