Radio Shack PRO-650 Desktop Radio Scanner 200-channel desktop scanner with PC interface programming Exclusive one-touch service keys for marine, fire/police departments, air and ham Skywarn and S.A.M.E. weather alerts; Signal Stalker II local channel search One priority channel; Fixed AM/FM mode; Search speed 80 step search per second; Scan speed: 40 channels per second UHF bands 380-512; VHF Lo 26-54 MHz; VHF Hi 137-174 MHz; Aircraft 108-136.99166