Think I have found solution to problem with EMS to hospitals talk groups on Winston-Salem/Forsyth system. Very frequently (but not always) when monitoring on this scanner transmissions with the hospitals had a very annoying "birdie type" back ground noise making transmissions hard to understand. Those talk groups are marked as analog in RadioReference, and scanner was showing FM rather than D when receiving. The EMS units operate as digital (with clear audio) when talking on their dispatch or tac talk groups. On a hunch I looked at the EMS to Hospital talk groups in the EZ-Scan software. All were set to Analog. Since changing when all to AUTO rather than Analog I have not heard any of the birdie sounds. They still show FM when receiving on the hospital talk groups, but audio has been clear. Do not have this problem with PSR500, but all talk groups there are AUTO, cannot set for analog or digital. This apparent solution might have application in other systems as well. Will monitor for several more days before posting this on the GRE Forum. Has anyone else experienced this birdie (like birds chirping) problem? The analog settings that were there were from the import from RR library, I had not manually entered those TG. Perhaps it has to do with a digital capable radio operating in analog mode.
Ron
Ron
