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ARISS Frequencies

To utilize the the packet system, operators need to set the UNPROTO path to ARISS (the id is RS0ISS) for digi relay or they may connect to the BBS using the callsign RS0ISS-1.  

The packet beacon is set for 2 minute intervals so it may not appear to be active over many parts of the world but keep listening and mind the Doppler shift (+ or – 10 KHz).


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: North and South America-Caribbean-Greenland

  • 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

ARISS Callsigns


Voice USA call sign NA1SS
  Russian call signs RS0ISS
  European call signs DP0ISS
Packet Keyboard call sign RS0ISS-3
  Mailbox call sign RS0ISS-11
  Digipeater Alias ARISS