| DB9 | DB25 | What | Link2 | Link1 | Rptr R | Rptr T |
| 4 | MIC | 2 | 2 | 5 | ||
| 3 | PTT | 3 | 3 | 6 | ||
| 7 | CSQ | 4 | 4 | 4 | ||
| 9 | CS1 | 6 | ||||
| 13 | CS1 | 6 | ||||
| 6,8,9 | 25 | GND | 4 | |||
| 6,8,9 | 25 | GND | 7 | 7 | 7 | (mic |
| 11 | CS3 | 8 | jack) | |||
| 15 | CS3 | 8 | ||||
| 10 | CS2 | 9 | ||||
| 14 | CS2 | 9 | ||||
| 5 | RXAF | 11 | 11 | |||
| 5 | RXAF | 11 | ||||
| 2 | PL+CSQ | 12 | ||||
| 12 | CS4 | 14 | ||||
| 22 | FAN |
Two Maxtrac type remote bases and two Maxtrac radios as a repeater.
Link 2 is a GM300 on 2 meters with 16 channels, link 1 is a
Maxtrac UHF on 440 MHz with 8 channels.
UF1-4 are BCD lines for link 2, UF5-7 are BCD lines for link 1.
Next step: program macros that will switch the UF lines and speak
the
frequency associated with them. More on this later...