AURSINC MMDVM Duplex Hotspot Module Dual Hat V1.5.2 Support P25 DMR YSF NXDN DMR Slot 1 + Slot 2 for Raspberry pi with USB Port (with OLED)

Original crystal ECS-TO-3225-1474-TR from USA 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 Setting Tips Modem select STM32-DVM/MMDVM_HS-Raspberry pi Hat(GPIO) Package List 1x MMDVM duplex HotSPOT Module 2x Antenna Features details Features if the board fails to work on duplex mode please run the upgrade command sudo pistar-mmdvmhshatflash hs_dual_hat (if this command doesn't work please try this command mmdvm club/index php wpsd html) WIDELY COMPATIBLE Supports DMR P-25 D-Star and System Fusion HIGH PERFORMACE 32-bit ARM processor up to 10mW RF power fully tested every piece WORK with RASBERRY Pi Mounts cleanly on current Raspberry Pi including the Pi Zero NOT compatible with Rasberry Pi 4 FREQUENCY Radio Frequency Freq:144-148,219-225 (Main Band) 420-475,842-950 NOTE TX=0 RX=0