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 3

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

El nivel 3 del modelo OSI corresponde a la capa de red, responsable del direccionamiento y encaminamiento de paquetes.

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Level 3