# Device: T-Modem-c1224 (`tmodem`)

USB CDC **KISS half-TNC** from [T-Modem-c1224](https://github.com/ngteq/T-Modem-c1224) Pico firmware. Chip does AFSK; Pico does HDLC + bitbang. **Not** BayCom/based. **Not** softmodem.

| Item | Value |
|------|--------|
| Device id | `tmodem` |
| Backend | `kiss-raw-serial` |
| Default path | `/dev/ttyACM0` |
| Feature | `[features] tmodem=yes` (default **no**) |
| Terminal | `max25-terminal -d tmodem` |

HyBBX: attach to max25d only — no L1 inside HyBBX.

See [docs/DEV/TMODEM-C1224.md](../../../docs/DEV/TMODEM-C1224.md).