RadioShack Pro-668 SCAN IT Handheld iScan Digital Scanner Multi-system digital and analog trunking Location based automatic programming gets a beginner started quickly; Weather radio receiver mode with SAME and All Hazards signal decoding V-scanner technology allows you to save all working memory to a data file and upload to the Pro-668 Recording Function permits recording of transmission; User upgradeable CPU and DSP firmware and library Scans digital and analog trunked radio system signaling formats; CTCSS and DCS subaudible decoder Spectrum Sweeper rapidly finds nearby signals even if you do not know the frequency