1、POWERFUL NATIONWIDE INTERCONNECTION: Digital MMDVM intercom modem box (hotspot) can be connected to WiFi or mobile phone hotspot or network cable, through which ordinary digital walkie talkie can be used to achieve nationwide interconnection, and the connection distance limitation of ordinary digital walkie talkies can be solved 2、STABLE WITH LOW ERROR: The MMDVM motherboard adopts imported components, temperature compensated crystal oscillator, stable performance after long term booting, and low bit error rate 3、GOOD HEAT DISSIPATION: MMDVM dual slot digital hotspot board has the advantages of optimized wiring, perfect component layout, low heat generation, fast heat dissipation, etc. Suitable for long term boot work, 3in LED screen 4、IMPROVED SOUND QUALITY RESTORATION: The duplex board has the advantage of double time difference to the dmr. All debugging parameters are carefully debugged by the dmr system for each board. After the calibration, the dmr system will be more stable and the sound quality restoration will be greatly improved 5、STABLE WITH SLIGHT OFFSET: For other users of the system, the dressing change frequency can be used as stable as dmr, D STAR, ysf (c4fm), p25 mode as long as there is a slight offset 1 x MMDVM Hotspot Board1 x USB Power Cable Item Type: MMDVM Hotspot BoardFrequency: U segment (420,000-434,900; 438,100-470,000)Supported Modes: Dmr, d star, ysf(c4fm), p25, nxdn and pocsagPower: 20mWShell Material: AcrylicExternal Power Supply: 5V 2A mini port (self provided power supply)Internet Connection: WiFi or network cableThermal Motherboard: Duplex