Features: 1.IP67 waterproof analog two way radio 2.Dual Band,dual display,Duan wait and dual standby 3.256 groups of memory channels 4.Wide/Narrow bandwidth selection (25kHz/12.5kHz) 5.Handsfree VOX function 6.English/Chinese Voice prompt 7.CTCSS/DCS encoding and decoding 8.Non-standard CTCSS/DCS input 9.Auto Scan 10.ANI function 11.FM radio receiver and 25 memory radio stations 12.PC program 13.1750 Tone 14.DTMF decoding and encoding 15.Remote stun,kill and activated 16.SOS 17.1.77 inch color Display 18.Emergency alarm Specifications General Frequency Range 136-174MHz & 400-520MHz Frequency Stability ±2.5ppm Channel Capacity 256 channels Operating Voltage DC 7.2V Antenna SMA-Male Dual band High gain antenna Antenna Impedance 50 ohm Mode of operation Same or different frequency simplex Dimension (H*W*D) 120*55*33mm Transmitter RF POWER High≤ 10W Low ≥5W Modulation Type (Wide/Narrow band) 16K Ø F3E/11K Ø F3E Max. Fr. Deviation (Wide/Narrow band) ≤ 5KHz/≤ 2.5KHz Adjacent Ch. Power(Wide/Narrow band) ≤-65dB/≤ -60dB Spurious Power ≤7µW Pre-emphasis character 6dB/Each frequency doubling the increment Modulated noise <-40dB Current ≤2.8A(10W) ≤1.8A(5W) DCS/CTCSS Frequency deviation 0.6KHz ±0.15KHz,0.4KHz± 0.1KHz Intermediation sensitivity 8~12mV Modulation distortion <5% Receiver Reference Sensitivity <-122dBm (12Db SINAD) Audio power 1W Audio Distortion <5% Blocking ≥85 Inter-modulation (wide/Narrow band) ≥60dB ≥55dB Adjacent Ch. Selection ≥65dB ≥60dB