My APRS Location – KC8GRQ
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Clinton County Public Safety
Midland County Police and Fire
Saginaw County Fire Dispatch VHF Hosted by RadioReference.com
I have found a very simple and cheap interface to program some Motorola and Unication pager models.
I have found that a Yaesu VX-5 VX-6 VX-2 cable works great. I have an older serial cable, but it works fine with a USB > Serial adapter. Most cables now are USB, but I would bet that they should work fine. You can find these on Ebay for about $10.
On my model, the Black wire is Ground, White Wire is Data Positive.
On the pager, the bottom pin hole (closest to battery) is Ground, Top Pin hole is Data Positive.
This has been tested on the following models. These models use a 2 wire programming interface.
Software is available from these sources.