Making a Maxtrac do PAC-RT

Making a Maxtrac do PAC-RT
One similar way this can be economically achieved is by using a RICK unit, or building a repeater cable (see at the beginning of this page) yourself and plugging it into a second MaxTrac.
The second MaxTrac can be a simple 2-channel unit (or not) and will two-way repeat the first one and vice-versa. You can also construct this device to one-way repeat (just eliminating the second TX line) to construct a GMRS repeater out of two Maxtracs.
Otherwise, to actually use a PAC-RT with a Maxtrac you need the following cable:

MaxTrac     PAC-RT
Acc Conn. 
 3  -------------------- 6
 13 -------------------- 1
 11 -------------------- 21 (Shielded Cable)
 2  -------------------- 19 (Shielded Cable)
 7  -------------------- 8 
     ----- 2
     |
     ----- 16
     ----- 10
     |
     ----- 17

Cable shields are connected to PAC-RT Pin 18 (Ground) and not connected at radio. There are two jumpers inside the PAC-RT Connector, Pin 2 to 16 (B+) and 10 to 17 (PTT Ground).

For on-off control:
PAC-RT Pin 2 B+ to on/off switch  
 Pin 9 & 15 other side of on/off switch 
(Pin 9 = PAC on/off, Pin 15 = Portable in/out) 
Both must be connected to B+ for unit to turn on,
Pin 22 ground (not required, unless you want an indicator lamp, or something).

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