PC Program Dual Band External Speaker/PTT DTMF function, 2 tone, 5 tone Patrol function Monitoring function Telehalo function Remote death function Boot function Alarm function Call key Long distance communication 25W power output Frequency Range (VHF) 136-174MHz (UHF) 400-480MHz Channel Capacity 200 Power output 25W/20W(VHF/UHF) Channel Spacing 25KHz/20KHz/12.5KHz Phase-locked stepping 5KHz, 6.25KHz, 10KHz, 12.5KHz, 15KHz, 25KHz Mute mode CTCSS/DCS/5Tone/2Tone/DTMF Frequency Stability ± 2.5ppm Operating Temperature -20?