Here's my issue, I monitor Viper via the Holly Ridge site in onslow county, thing is RR only lists one control channel, almost all other Viper sites have 2. I think that's why none of my radios or scanners receives this site even though I'm only 4 miles away. Is there any othere way to determine the other channel other than be near the site and scan the other listed channels? Btw, all other sites function as they should.