--- In Repeater-Builder@yahoogroups.com, Kevin Custer <[EMAIL PROTECTED]> wrote: > Hi Jim, > > >>Kevin Custer wrote: > >> > >>That would be the case if your station was "stock", but since Reverse Burst is usually not available in the ham circles, it had to be done differently. > >> > >> > >Jim B. wrote: > > > >I'm not quite sure what reverse burst has to do with this. I find if the controller is decent, RB still works as it should on repeat audio when in PL, which is all that matters. I clipped the jumper from the decoder to the sq chip because I wasn't getting the good short Micor squelch with it in, even on a CSQ input. > > > > The part of the mod in question is the fact that logic from the OEM PL > decoder goes to the Micor Squelch Chip on the A&S board and when the > receiver is decoding PL, forces the squelch open *without regard* to the > carrier squelch setting. Since ham radios don't have reverse burst, > cutting this logic line separates the COS and PL signals so they operate > independently; which removes the squelch burst at the end of a > transmission when a user is encoding PL without RB. This is done by > cutting jumper JU204 on the A&S board; as you have found. > > So, you see, that's what reverse burst has to do with it, because if all > ham rigs had reverse burst, we wouldn't have to cut JU204.
Different ways of looking at the same thing =c} I would cut the jumper even if I was putting together a stock CR, just because of the interaction, and I've seen enough cases of the PL decoder opening (even a Micor decoder) when there was no legit signal, which would bring up the repeater. > > >As a comment to Jim and anyone else, I used the PL disable switch and > >the transistor associated with it (on the station control card) as the > >F1 channel element switch. That way I have a positive tx disable on the > >front panel-with an idiot light that comes on when disabled. The switch > >grounds the base of the transistor, and keeps the F1 transmit element > >from coming on. > > > > That's one way of doing it, however there are times where we modify > Stations and want to use the PL Disable switch as intended; so I do it a > bit differently, to accomplish the same result: > <http://www.repeater-builder.com/rbtip/stationcontrol.html> > > Kevin Custer Right-the way I did that is definitely NOT for everybody! Especially if someone is putting up a stock repeater. Jim Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
