they rotate control channels every 24 hours, so you have to have the base and offset figured out for every control channel frequency. Federal Prision systems are a real pain in the butt. I generally found that just scanning the frequencies in conventional mode was the easiest way to listen.
Run-of-the-Mill Paramedic, Apathetic Firefighter and Recovering Dispatcher
Q: Is it Mac compatible?
A: No. Drive your hybrid down to the store and get a real computer.