Raspberry Pi Duplex Mmdvm Digital Hotspot Board Uhf/Vhf Dual Timing Support Dual Antennas Ready To Use

Duplex variant of MMDVM HS Hat This PCB uses the MMDVM HS It has two ADF7021 onboard and allows for duplex operation with two time slots on DMR The default bit error rate is less than 5 and the default 0ffset is 0 If the bit error rate is more than 5 as long as the signal can be received it can be corrected by 0ffset Features Fully tested Supports DMR P 25 D Star and System Fusion Onboard LEDs to show status Tx Rx PTT Mode Up to 10mW RF power SMA antenna connector Antenna included Mounts cleanly on all current Raspberry Pi s including the Pi Zero The firmware is pre loaded and is easily upgraded via software UHF 430 450 MHz 433mhz and 900MHzVHF 144 220 Opera FREQ The 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 Package includes 1 x MMDVM duplex HotSPOT Module2 x Antenna UHF 2 x SMA socket1 x Aluminum alloy shell