On Nov 9, 2009, at 5:30 PM, Jerry wrote: > There have been times when during events it would have been great if two > different repeaters had been linked. I've been kicking around the idea of a > portable repeater linker consisting of one VHF Radius, one UHF Radius, and a > RICK controller in the crossband mode. I've talked to the different repeater > owners and they have given me permission to give my idea a try. > > The 'linker' works great the first time. The receiver radio hears the output > of the first repeater and keys the transmitter radio which keys up the > repeater. The problem comes in when the transmitter unkeys. The receiver > radio hears the tail of the second repeater and keys up. When the second > machine drops, the transmitter radio hears the tail of it's repeater and keys > up. This continues FOREVER. > > Does anyone have any ideas or additional logic I can add to solve this > problem? > > Thanks, > > Jerry
Kinda. First... the idea Matthew offered will work. CTCSS on user signal received on both repeaters. Kinda. Problem: ID's. The RICK isn't properly ID'ing the "link" transmitters. Many of us have been down this path on the list. It'll lead to an annoying discussion of Part 97 if we go too far down that road. But you DO need to ID every transmitter. 'Nuff said. Best way: Put a dedicated link TX/RX at each repeater site or some sort of VoIP linking on its own controller port. In-band RF linking on the user input frequencies is a kludge at best. It can double with users, and has other timing problems... If you MUST link in-band, make the link margin (RF power) high enough that if the link doubles with someone, the LINK wins and captures the repeater receiver well enough that at least one of the transmissions can be heard by all... --- Nate Duehr, WY0X n...@natetech.com