At 8/28/2007 16:01, you wrote: >Bob Dengler wrote: > > > One concept that really helps in this area is CTCSS tone frequency > > standardization, IOW tones by region. All you then need to know is the > > freq. being used in the area you're traveling to. Many areas are already > > well established: 110.9 in Rochester NY, 107.2 in Niagara Falls & San > > Diego, 131.8 in Santa Barbara, 127.3 in Springfield MA. Even if you don't > > know what tone is in use, all you have to do is find the tone of one > > system. After that you can find the others by kerchunking (with ID of > > course!) all the other pairs with that tone. > > > > Bob NO6B > >It seems to me that if you have all the repeaters in an area running the >same CTCSS tone, and start fighting a mixing problem... everything is >going to be back to keying everything else in short order.
This gets us back to the "CTCSS-bandaid" issue. If your ham TXs are IMDing with each other & landing back on your inputs, you need to fix it. The only IMD problems I've had linger on my systems were caused by non-amateur TXs. If amateur TXs were involved, we found the actual source of the problem & fixed it. Bob NO6B
