USB Communication Duplex MMDVM Hotspot Support P25 DMR YSF + 2PCS Antenna For Raspberry Pi

Features Up to 10mW RF power Open source 3D printable case available Uhf 430 450 MHz 433mhz and 900MHz High performance 32 bit ARM processor SMA antenna connector Antenna included Supports DMR P 25 D Star and System Fusion Onboard LEDs to show status Tx Rx PTT Mode The firmware is pre loaded and is easily upgraded via software Mounts cleanly on all current Raspberry Pis including the Pi Zero VHF 144 220 Opera FREQInstall the firmware with bootloader support for USB connectionIf you want to use the device via USB port you have to install a bootloader and build the firmware with bootloader support As the raw device cannot be used with USB you have to use a USB serial adapter or STlink deviceThe upper part is TX the lower is RX antenna UHF VHFSMA antennaModem select STM32 HS GPIOSet TX frequency RX frequencyTX RX frequency had better 10M or more apart SLOT1 SLOT2 support Notice Without shell Not include the raspberry pi The firmware is pre loaded Please do not upgrade the firmware by yourself Package included 1 x MMDVM HotSPOT Module2 x Antenna