Main Features: 1) Digital PLL &VCO, Fast switch between receiving and transmission, with stable frequency. 2) Frequency covers 20MHz 3) With CTCSS code and voice can be encrypted. 4) Selectable Squelch Degree. 5) Auto Channel Scanning and Secret Channel Alarm Function. 6) RSSI. 7) 16-pin/26-pin data interface, Able to connect with RS-232 device. 8) Voice and Data transmission available. 9) GPS Interface Reserved. General Specifications: 1) Carrier frequency: VHF/UHF Frequency Stability(Tolerance):?ppm Channels:64 Channel spacing: 25kHz / 12.5kHz CTCSS: 38 Modulation mode: FM Data Modulation mode: MSK Air Data Rate:1200/2400bps Power supply: DC +12V ~ +15V, +13.8V typical Antenna Impedance:50 ohm Antenna Connector: BNC Temperature: -20?~ +60癈 Dimensions: 168 x 160 x 44mm Weight: 1.0kg