TNC/Radio Data Ports
Although typically described as data ports, the interface between a radio and a TNC is almost entirely analog audio (plus lines for PTT and squelch). The connectors used for this purpose varies widely across TNC manufacturers, but modern radios that offer data ports have widely adopted the Mini-DIN 6-pin connector. This may actually be defined in an ISO-9002 standard.
Also used are full-size DIN connectors, modular telephone (RJ) connectors, and combinations of mini- and micro-headphone connectors (typically on handheld radios).
- 6-pin Mini-DIN
Read more about this topic: Terminal Node Controller
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