Legacy ZUM Radio Products

ZUMspot OLED board
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blank spacer image The ZUMspot board is a small and efficient Multi-Mode Digital Hotspot featuring:
  • High performance 32-bit ARM processor
  • Requires a Raspberry Pi board (Zero WH, 2, 3 or 4)
  • Supports DMR, P-25, D-Star, YSF, NXDN, POCSAG and M17
  • Onboard LEDs to show status (Tx, Rx, Status and Mode)
  • Up to 10mW RF transmit power
  • SMA antenna connector, UHF antenna included
  • The open source firmware (MMDVM) is pre-loaded
  • The board is commonly used with the Pi-Star software
  • Built-in 1.3" OLED screen
  • 1 year warranty

ZUMspot USB (rev 0.5)
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blank spacer image The ZUMspot USB (rev 0.5) is a small and efficient Multi-Mode Digital Hotspot featuring:
  • High performance 32-bit ARM processor
  • Plugs via USB to host computer such as Raspberry Pi, Windows, Linux
  • Supports DMR, P-25, D-Star, YSF, NXDN, POCSAG and M17
  • Onboard LEDs to show status (Tx, Rx, Status and Mode)
  • Up to 10mW RF transmit power
  • SMA antenna connector, UHF antenna included
  • The open source firmware (MMDVM) is pre-loaded
  • The board is commonly used with Pi-Star and BlueDV software
  • 1 year warranty

ZUM Bluetooth board
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blank spacer image USB and Bluetooth host board for ZUMspot board
  • Uses the same form factor as Raspberry Pi Zero board including two micro USB connectors - 5V power and Serial over USB via genuine FTDI chip
  • Automatically switches between two USB connectors
  • Power via PWR USB connector enables Bluetooth connection to the ZUMspot
  • Connection to PC via USB connector enables UART connection to the ZUMspot
  • Can use the same enclosures as ZUMspot RPi with a Pi Zero
  • Supports BlueDV - DStar, Fusion & DMR
  • Supports MMDVMHost - DStar, Fusion, DMR, P25, NXDN

ZUMspot Dual Band
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blank spacer image NOTE: Due to the worldwide electronic component shortage, we have been unable to purchase some of the parts for the ZUMspot Dual Band since 2021. As soon as the shortage is resolved, we plan to reintroduce the ZUMspot Duplex.

The ZUMspot board is a small and efficient Multi-Mode Digital Hotspot featuring:
  • High Performance 32-bit ARM Processor
  • Requires a Raspberry Pi board (Zero WH, 2, 3 or 4)
  • Supports VHF and UHF
  • Supports DMR, P-25, D-Star, YSF, NXDN, POCSAG and M17
  • Onboard LEDs to show status (Tx, Rx, Status and Mode)
  • Up to 10mW RF transmit power
  • SMA Antenna Connector, UHF antenna included
  • The open source firmware (MMDVM) is pre-loaded
  • The board is commonly used with the Pi-Star software
  • Built-in 1.3" OLED screen

ZUMspot Duplex
     Buy now at
item currently not available ml&s purchase link
blank spacer image NOTE: Due to the worldwide electronic component shortage, we have been unable to purchase some of the parts for the ZUMspot Duplex since 2021. As soon as the shortage is resolved, we plan to reintroduce the ZUMspot Duplex.

The ZUMspot board is a small and efficient Multi-Mode Digital Hotspot featuring:
  • High Performance 32-bit ARM Processor
  • Requires a Raspberry Pi board (Zero WH, 2, 3 or 4)
  • Supports two time slot DMR
  • Supports DMR, P-25, D-Star, YSF, NXDN, POCSAG and M17
  • Onboard LEDs to show status (Tx, Rx, Status and Mode)
  • Up to 10mW RF transmit power
  • SMA Antenna Connector, UHF antenna included
  • The open source firmware (MMDVM) is pre-loaded
  • The board is commonly used with the Pi-Star software
  • Built-in 1.3" OLED screen

MMDVM Nucleo
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blank spacer image MultiMode Digital Voice Modem (MMDVM) for Nucleo
  • Designed for repeater and high power hotspot applications (Requires: Radio(s) and ST Nucleo 446 board)
  • Fully assembled and tested PCB, connects to ST Nucleo 446 board
  • Supports DMR, P-25, D-Star, System Fusion, NXDN, POCSAG and M17
  • Utilizes a high performance 32bit ARM processor on Nucleo board
  • 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
  • Onboard LEDs to show status and modes (Tx, Rx, Status and Mode)
  • 8 pin JST Connector with pigtail wires
  • The open source firmware (MMDVM) is easily loaded onto Nucleo board