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I usually monitor the PD, SO, FD, and the EMS. For a while now i havent been recieving the EMS channel on 154.335. So I put in the Input freq and I get the ambulance calling but not the dispatcher. I have one radio on the input and the other om the output but the output dont seem to be working ? My radio is a pro-197 and I have a Radioshack VHF/UHF antenna that works great. Anyone know anthing about this ?