I inherited a couple of Uniden radios model GMR325-2 which cover FRS and GMRS channels 1 through 22. I notice that CH9 and CH12 are occupied by a continuous beeping sound. I drove around in my car 15-20 miles and the signal is very strong up and down the peninsula. Does anyone else pick the beeping on these channels? Anyone else know what it is? I thought continuous broadcast on FRS channels was not allowed.