On my repeater interfaces, I include a SPDT switch with a center off position in the PTT line. One direction for normal repeater operation, center is off, the other direction is manual transmit. Works great for quick desense testing or disabling the transmitter if I am working on things.
Kevin Custer wrote: > > > Nate Duehr wrote: >> You guys do realize the mod is specifically for a MASTR II Station, >> right? >> I don't think you're discussing MASTR II Stations anymore..... >> >> >> On a MASTR II station, a disable TX switch simply isn't necessary. >> >> /The proof is in the pudding: There have been hundreds of technicians >> working on them for 20+ years without asking GE to add such a switch./ >> > > GE Technicians didn't have to ask for the switch Nate, they didn't work > on MASTR II's that had the repeater card removed. > Invalid point.... > >> There is a "Repeat Disable" on a station that's been >> factory-configured as a Repeater, and that's useful. But we hams pull >> that card and add our own controllers, so our controller becomes the >> place for that "job" at that point. >> > > You cannot EASILY nor QUICKLY disable the repeater by functionality of > the repeater controller, unless the controller has a manually operated > switch on the front panel. Most don't include such a switch, sorry.... >> I guess I'm just not getting through... >> > > Oh you are getting through, loud and clear. I just don't think others > are going to buy into your thinking..... > > Above, you agree that the original manual disable switch is useful, but > when that switch is removed (because of removing the original control > card that had the switch), you don't think that adding one back is > useful? I don't follow your logic, sorry. >> Another switch is unnecessary and adds a non-standard feature to the >> station which anyone who'd worked on them before wouldn't know was there. >> > > Non Standard... ?? Wait, the repeater came from the factory with a > Repeat Disable switch. That card was removed, so we reinstated the > switch on a card that 99% of repeaters that use a modern controller use > (The 10V Reg Card). We simply reinstated the Standard functionality > back into the repeater. > > If the repeater was modified to the point of removal of the card that > had the Repeat Disable switch, anyone working on the repeater can no > longer follow the LBI exclusively anymore. That person is going to have > to know enough about the installation to figure out a third party > controller, so I don't think that a switch that is plainly labeled "PTT > Disable" is going to be that difficult for them to figure out. If is > it, they have no business working on the repeater. >> All tests including desense tests can be done without ever touching >> the RF cabling (if that's the complaint) for the TX side of the radio. >> Easily. I described exactly how one could do it. > > Jerk out a card? Yuck.... > Pull off the Power Connector to the exciter? Yuck.... > Disable the PTT with the repeater controller? Yuck.... > Pull off the exciter RF connector? I don't think so. > > Please quantify how any of these above, or any other that you can think > of, are better in any way than a simple switch. > > Your turn..... > > Kevin > > >
