• [Frequency Range] MMDVM hotspot board is the latest firmware. Supports UHF VHF, frequency range: 144MHz-148MHz, 420MHz-475MHz, 842MHz-950MHz (depending on ADF7021 and TCXO, HAT firmware amateur radio brand license restrictions)
• [Compatible] Hotspot board support Raspberry Pi 4, 3B, 3B +, Pi Zero W, Pi Zero 2W, compatible with NanoPi NEO, Orange Pi, compatible with BlueDV (requires USB to TTL or Bluetooth model). If you want a little processor power install on Pi 3 or Pi4, this is a great little hat for digital voice modes.
• [Support MMDVM Mode] MMDVM board saves electricity, High quality TCXO, stable, low BER. Support MMDVM mode DMR / YSF / P25 / NXDN / DSTAR / POCSAG
• [Features] Support online upgrade, user-friendly OLED and Nextion special design location, reserved for additional installation of Bluetooth modules. It can be update the MMDVM firmware version to V1.6.1 (How to Update MMDVM_HS for WPSD 1.6.1: jumbo5566.github.io)
• When connecting the MMDVM board to a RPi 4, please note: If it works normally, no additional settings are required. If the SVC indicator does not flash, choose one of these methods (refer to the product diagram): 1. Remove the R1 resistor on the hotspot board. 2. Cut off the 2 RPi pin headers on the corners of the board
• [Packing list] 1x mmdvm hotspot board (UHF/VHF), 1x antenna, 1x elbow. Please refer to this to test whether your device can receive or transmit signals: m7spi .co .uk/mmdvmcal/. If you encounter that the device cannot connect to network after setup, please kindly us. We will help resolve this issue

If the Raspberry fails to connect the hotspot board, please try update the firmware of the hotspot board by conducting the command: sudo pistar-mmdvmhshatflash hs_hat. More info pls view "amateurradionotes/pi-star-notes.htm#hotspotfwupdate".
Features
High efficiency, less power comsumption, High quality TCXO, stable, low BER
Support Raspberry Pi 3B, 3B +, Pi ZERO, compatible with NanoPi NEO, Orange Pi, compatible with BlueDV (requires USBtoTTL or Bluetooth model)
Support MMDVM mode DMR / YSF / P25 / NXDN / DSTAR / POCSAG
Support online upgrade, User-friendly OLED and Nextion special design location, reserved for additional installation of Bluetooth modules

Package List
1x MMDVM motherboard(UHF/VHF)

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