Description: This is completely a self-contained digitalhotspot supporting for DMR, DSTAR, P25 and system combination communications. Fully assembled and tested in a ruggedized aluminum enclosure. All that's required for operation is a mini USB (for android phone's cable) power source and a WiFi based internet connection.Features: Supports PI-STAR's web based digital voicedashboard and configuration tool. Large Capacity: Comes with 512Mb DDR3 RAMand 8GB memory card, provides full storage space. SMA Detachable Antenna: Helps to receive strongand clear signal, support 420 - 450MHz UHF. Organic LED Display Screen: Always show you the systemstatus, such as indicating mode, talk group and call sign. High Performance: Single core 1GHz processorand 32bit ARM processor, allow stable and powerful performance.System Combination: Supports digital amateur modes for DMR, D-STAR, P25, and YSF. Built-in WiFi: Support 802.11b/g/n wirelessprotocol. Easy to use: Fully assembled, plug andplay. Specifications: Color: Black Processor: Single Core 1GHz + 32bit ARMMemory Capacity: 512Mb DDR3 Ram + 8G Memory Card Frequency: 420 - 450MHz UHFWiFi Protocol: 802.11b/g/n Console Port: SSH 22 Display Screen: Organic LEDRF Power: 10MW Size: Approx. 72 x 33 x 23mm/ 2.9 x 1.3 x 0.9in Package Weight: 83g Package List: 1 x MMDVM Hotspot Board 1 x 43MHz Antenna 1 x 8G Memory Card Note: The firmware is pre-loaded and can beeasily upgraded through software. Please DO NOT update the firmware by yourself..