I'd start at <http://www.repeater-builder.com/motorola/r100/r100-index.html> and download the service manual. Start at the transmitter PTT line and see if it's pulled low. If it is, backtrack on the schematic / transmitter board and see what's doing it. If it's not, then I'd look at the codeplug.
Mike WA6ILQ At 08:52 AM 12/30/09, you wrote: >Hi all, > >I have a Motorola R100 2-10w UHF repeater on the bench. It was working >fine (pulled from of working service) until a frequency programming >change (only 25 kHz). Now it stays keyed unless I change the repeater >disable switch on the board. It does pass receiver audio normally but >the repeater never drops the carrier. In fact it keys up immediately >upon power on. I disconnected the receiver to make sure it nothing was >causing the transmitter to trigger. > >I am not too familiar with troubleshooting these repeaters as they have >always worked well in the past. Am I looking at a codeplug corruption >issue or is it a coincidental hardware issue. > >Any tips or sharing of common failures appreciated. Thanks. > >- Rob > > > >------------------------------------ > > > >Yahoo! Groups Links > > >
