On 5/3/2010 1:08 PM, Jeff DePolo wrote: > > >> I'm guessing I am not the first to want to do this... >> >> I want to use a UHF Micor for a link. I want to be able to stop the >> PL encode immediately when a user unkeys, but I want the controller >> to be able to hold the transmitter up (without PL tone) for >> sending IDs. >> >> There appears to be no PL on/off gate on the TLN5731A encoder. The >> only tone gate is Q703 which only gates the out of phase tone used >> for reverse burst. >> >> Other than using a mechanical relay to interrupt the encoder tone >> output, any suggestions? >> >> Thanks, >> >> Paul N1BUG > > Pin 701 on the board (base of Q704) is PL Inhibit - pull to ground to kill > the encoder. > > --- Jeff WN3A
Yeah-that's it! |cP