[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: 144-148, 219-225, (Main Band) 420-475, 842-950. It's best to work on the amateur band: 430-440 MHz. NOTE: TX =0, RX=0. Modem select: STM32-DVM/MMDVM_HS-Raspberry pi Hat (GPIO) or any other (GPIO board)
[NOTE] 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 WPSD replace pi-star for MMDVM: https:// www. mmdvm .club/index .php/wpsd.html)
[LASTEST FIRMWARE] The MMDVM Duplex Hotspot board is latest firmware V1.5.2, support upgrade to V1.6.1. How to upgrade: (pi-star/expert/ssh access/user: pi-star pass: raspberry) Set Jumper BOOT0=1, BOOT1=0 and soler JP1 first. Then run sudo pistar-mmdvmhshatflash hs_dual_hat, After upgraded finished, disconnect JP1
