Next satellite passCalculating pass

--:--:--

Uplink— Downlink— Mode— Tone—

AOS--:-- LOS--:-- Max elevation--°

Global status On air CALL OA4EFZ UTC --:--:-- Data Connecting

APRS ALERTSCONNECTING

CONNECTING · OA4EFZ

--:-- UTC

Emergencias y comunicaciones de servicio

SOS

Type: Concepto Advanced difficulty Last review: 2026-07-21

SOS es una llamada en código Morse para solicitar asistencia de emergencia.

References

APA 7 presentation

1

Silver, W. (2004). Ham radio for dummies. Wiley Publishing.