ZUM Radio-MMDVM for Pi. Rev 1.0

ZUM Radio-MMDVM for Pi. Rev 1.0
Part Number: ZUMRADIO-MMDVM-PI
£89.95 ( £74.96 EXC. VAT )
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Product Information
  • Overview
  • Zum Radio RPI
  • Customer Reviews
Zum-radio control board MMDVM, connect to a radio with 9600Baud compatability "eg: ft7800, ft7900, ft8900, ftm100, ftm400 etc" and turn it into a multi mode digital node.

  • Designed for repeater and high power hotspot applications (Additional Hardware Required: Radio(s) and Raspberry Pi)
  • Fully assembled and tested full sized Pi format PCB, Mounts cleanly on RPI 2 and 3
  • Utilizes a high performance 32bit ARM processor running at 180Mhz (Room for future upgrades)
  • Fourth generation analogue filter design that provides an extremely low BER compared to previous generations
  • 2 Multi-turn pots for fine RX and TX adjustments
  • Status/Mode LED’s and (PTT, COS, Power, D-Star, DMR, P25, NXDN, Fusion)
  • Connections for Nextion LCD display and I2C LCD/OLED Display
  • 8 pin JST Connector with 150mm wires
  • Open source MMDVM firmware preloaded and easily upgraded by software


MMDVM Schematic:


Zum-radio control board MMDVM, connect to a radio with 9600Baud compatability "eg: ft7800, ft7900, ft8900, ftm100, ftm400 etc" and turn it into a multi mode digital node, or use two radios for a simple repeater.

You can also utilise a DR1 yaesu repeater for Dstar, C4FM, DMR, etc, a great project aimed at the more advanced radio enthusiast. 
(1 reviews)Write a review
Works a treat
Adrian|06-02-2021
I purchased this in addition to my DV-Mega Modem (used for D-Star only) as I was planning on a public gateway and wanted to offer multi-mode. FYI an NoV is required to offer a public gateway but not for personal use. It was initially used with a Yaesu FT-817ND and worked fine out of the box on both D-Star and DMR. It also worked with a Yaesu FT-7800 (power reduced for NoV) and now also working on an ex-PMR radio, a Vertex VX-2100. The modem interfaces fine on a Raspberry Pi but you will need to shop around for a larger Pi project case to allow for the presets. The Pi runs a little bit warmer as it has the board mounted above so you may wish to mount to the side of the Pi with an extender cable. Using Pi-Star the board is fully supported. Adjustments may be required depending on the radio you use but so far this has worked out of the box. I have only used this with D-Star and Fusion and had no issues with error rate.
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