GOOZEEZOO 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 (Without OLED)

Additional Details from the Manufacturer

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More features

• [WORK with RASBERRY Pi] Mounts cleanly on current Raspberry Pi including the Pi Zero, NOT compatible with Rasberry Pi 4
• [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
• FREQUENCY: Radio Frequency : Freq:144-148,219-225, (Main Band) 420-475,842-950 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