| COLT COMMUNICATIONS CO. | ||
| model(s) | wire color | pin number |
| 290 800 100480 485390 1200 |
Audio | 1 |
| Ground | 2 | |
| PTT | 4 | |
| receive | 3 | |
| model(s) | wire color | pin number |
| 900 hi-z(use an amplified mic only) |
Audio | 1 |
| Ground | 4 | |
| PTT | 2 | |
| receive | N/C | |
| model(s) | wire color | pin number |
| 350 | Audio | 4 |
| Ground | 2 | |
| PTT | 5 | |
| receive | 1 | |
| model(s) | wire color | pin number |
| 220 Z |
Audio | 1 |
| Ground | 4 | |
| PTT | 2 | |
| receive | 5 | |
| model(s) | wire color | pin number |
| 222 210 |
Audio | 1 |
| Ground | 4 | |
| PTT | 2 | |
| receive | 5 | |