Expand description
TNC, D-STAR callsign, and real-time clock commands: TN, DC, RT.
Hardware-verified command behavior:
- TN: TNC mode (bare read, returns
mode,setting) - DC: D-STAR callsign slots 1-6 (slot-indexed, returns
slot,callsign,suffix) - RT: Real-time clock (bare read, returns
YYMMDDHHmmss)
The D75 firmware RE misidentified these as tone-related commands. Hardware testing confirmed the actual semantics documented here.