UV-TEN4 - Police Scanner / Two-way Radio Transceiver - Hand Held Scanner W/fm Radio User Notice: Programming is required for this device. Easy manual procedure or program by computer. Frequency range: 136.00 to 174.00, 400.00 to 520.00MHz High and low-power switchover Frequency step setting; Battery-saving; VOX function 50 CTCSS and 104 DCS codes