Next satellite passCalculating pass

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Uplink— Downlink— Mode— Tone—

AOS--:-- LOS--:-- Max elevation--°

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

APRS ALERTSCONNECTING

CONNECTING · OA4EFZ

--:-- UTC

Códigos, abreviaturas, historia y cultura

QRL

Type: Sigla Beginner difficulty Last review: 2026-07-21

QRL se utiliza para preguntar si una frecuencia está ocupada o si el operador está ocupado.

Also searched as

Is this frequency in use?

APA 7 presentation

3

Autor no identificado. (s. f.). Código Q.

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

Stoner, Donald L.. (1991). The Ham Radio Handbook.