MMDVM Hotspot Board for Raspberry Pi with Antenna Support

About this item

• [Frequency Range] MMDVM hotspot supports UHF VHF, frequency range: 144MHz-148MHz, 420MHz-475MHz, 842MHz-950MHz (depending on ADF7021 and TCXO, HAT firmware amateur radio brand license restrictions)
• [Applicability] AURSINC hotspot board supports Raspberry Pi 3B, 3B +, Pi Zero W, Pi Zero 2W, compatible with NanoPi NEO, Orange Pi, compatible with BlueDV (requires USBtoTTL 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.
• [Multifunction] Hotspot board saves electricity, High quality TCXO, stable, low BER. 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
• [Firmware Update] 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.com/pi-star-notes.htm#hotspotfwupdate (It can be update the MMDVM firmware version to V1.6.1.)
• [Compatible with P4 settings] Since our mmdvm board is defautly setup for Pi-Zero W, Pi 3. and if you do want to connect it with your Pi 4, you could try below methods. PICK ONE. Method 1: Remove the R1 resistance of the hotspot board(single/dual) ; Method 2: Cut off the 2 Raspberry Pi pin headers on the corners of the board ( pick one to operate on your MMDVM board, refer to the product image for the R1 and 2 pin headers locations)
• [Importance] Please refer to this website 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, or find does not receive or transmit, please kindly contact us. We will help resolve this issue