The factory setting is FRS/GMRS, if you want to program the radio, pls kindly search programming cable "B01M4N6VLH ", as for the software, we will send a link to you for downloading. Key Features Frequency Range: 400-480MHz 25 channels 8 level volume adjustment CTCSS/DCS LCD display Scan mode Alarm Battery saves PC programmable Monitor Key Lock Volume adjustment High Low power switch w/N band switch Key sound prompt Specification Channel 25 Working Temperature -20-60°C Standard Voltage 3.7V Battery Capacity 1100mAh Channel Spacing 12.5/25kHz SIZE(excluding antenna) 95mmx18mmx29mm Weight 50 g Antenna Impedance 50Ω Transmitting Part Freq Stability ≤±2.5ppm Output power <2W Modulation F3E Residual FM ≤-35 dB Audio Distortion ≤3% Receiving Part Sensitivity ≤-120 dBm Adjacent selectivity ≥70 dB Intermodulation immunity ≥70 dB SN ratio ≥48 dB Audio Distortion ≤3% Notice: This radio doesn't have outer speaker, it should work with headset.
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