APRS frequencies, SSIDs, and path guidance. Works offline after your first visit.

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APRS Reference

APRS quick reference for VHF packet and iGate operations.

Primary frequency (US)

Band144.390 MHz
Mode1200 baud AFSK packet (standard)
Alternate144.340, 144.800 (regional)

Common SSIDs

SSIDUse
-0Primary station
-1Secondary / additional
-7Handheld
-9Mobile
-10IGate
-15APRS digipeater

Suggested paths

  • Wide1-1 — local, one hop
  • Wide2-1 — two-hop regional
  • WIDE2-2 — avoid in congested areas
  • Use NOGATE to keep off IGates when appropriate

Common questions

What is APRS used for in emcomm?

Position and short status packets for situational awareness — supplements voice, does not replace ICS logging.

Does APRS work without internet?

RF-only paths work peer-to-peer; iGates add internet when available.