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Digirig Mobile

The Digirig Mobile is a compact all-in-one interface combining a CM108 USB sound codec, a CP2102 serial CAT bridge, and an open-collector RTS PTT switch — all over a single USB-C connection. It's extremely popular for data modes and works well for simple node builds. Why it matters for ORLP: It collapses audio + CAT + hardware PTT into one small unit. The serial port can be configured (via internal solder jumpers) for logic-level, RS-232, or CI-V, and there are auxiliary connection points to the CM108 codec specifically called out for AllStar homebrew node builds. Connections: Two 3.5mm TRRS sockets on the radio side — one for audio + RTS PTT, one for serial/CAT. Radio-specific cables are sold per transceiver. Note the CAT level config is set with solder jumpers and can't be changed on the fly.