

Important:
Never ground pin 2 or 5 as damage to the regulator will occur.
| 8 Pin locking ring | Pin | Signal |
|---|---|---|
| 1 | Up (connect to pin 2 for Up) |
| 2 | +5v | |
| 3 | Down (connect to pin 2 for Down) | |
| 4 | Tone Burst (connect to pin 5 for Tone) | |
| 5 | +5v | |
| 6 | PTT (connect to pin 7 for TX) | |
| 7 | Common Ground | |
| 8 | Mic Audio |