Frequency Range (V) 137 173MHz Frequency Range (U) 400 470MHz Number of Channel 199 CTCSS 50 CTCSS 105 DCS Frequency Spacing 5.6.25.10.12.5.25KHz Modulation FM Mode of Operation Simplex or Semi-duplex Antenna Impedance 50Ω Operating Voltage DC7.2V Current Consumption Cathode darth-plate Operating Temperature -1 +55 Output power ≤5W Spurious emissions ≤-65dB Current Consumption ≤1.6A(transmit 4W) Maximum Deviation ≤±5KHz Sensitivity Adjust 2 20mV Frequency Stability ±5ppm Usable Sensitivity 0.2μv Audio Output ≥0.5w Audio Distortion ≤10% Audio Frequency Response 300 3000Hz Occupied Bandwidth ≤16KHz We will not advance,if changing the technique specification. FEATURE 1,Output power VHF5W/UHF4W 2,199groups for memory channels 3,Channel step (5/6.25/10/12.5/25KHZ) 4,VOX function 5,CTCSS/DCS 6,Multifunction scan 7,Three color for LCD to adjust