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

Nivel 1

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

El nivel 1 del modelo OSI corresponde a la capa física, responsable de la transmisión de bits por el medio.

Also searched as

Level 1