WIRING HARNESS FOR RADIUS/MAXTRAC
AND RC-210 CONTROLLERS
 
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...