Feature

●MMDVM Duplex Version V1.52,This PCB uses the MMDVM_HS . It has two ADF7021 onboard and allows for duplex operation with two time slots on DMR. High-performance 32-bit ARM processor, up to 10mW RF power, each piece has been fully tested.We have done some setting for pi-star in the TF card.
●MMDVM hotspot is a fully-assembled device,support SLOT1,SLOT2.Supports UHF/VHF.FREQUENCY: UHF 433-900MHz, VHF 144-220 MHz. NOTE: TX =0, RX=0. Modem select: STM32_HS_GPIO;The upper part is TX,the lower is RX antenna.Set TX frequency,RX frequency，TX,RX frequency had better 10M or more apart.
●MMDVM Duplex Hotspot suits for Raspberry Pi 3,Raspberry Pi Zero W,but NOT compatible with Rasberry Pi 4. Support:D-STAR, P25, DMR ,YSF and work with UHF,enables the different mode of digital two way radio to communicate with each other. In Single mode support both Uhf and Vhf.
●Basic Setup: Set the same freq as Radio Mobile, for example: 433.550000MHZ DMR, WIFI SSID:pi-star,PASSWORD:raspberry, Need the 2.4GHz SSID as the Pi Zero W doesnt support 5.8GHz.**Note: You need to set it up before using it for the first time, please refer to the manual for details.
●Power Supply: Mobile charger or a USB cable connected to your computer or laptop. The Hotspot will also work mobile in your vehicle if you Tether it to your mobile phone network.


Description

MMDVM Duplex Raspberry PiMMDVM Duplex Raspberry Pi
MMDVM duplex machine Including:

(1) Raspberry Pi Zero W x1

(2)Duplex MMDVM hotspot board x1

(3)OLED display x1 (installed on board)

(4)Aluminum Shell x1

(5) 8G TFT card x1

(6)433Mhz Antenna x2

(7)145Mhz Antenna x2

Features:

- High performance 32-bit ARM processor

- Supports DMR, P-25,D-Star and System Fusion

- Onboard LEDs to show status (Tx,Rx,PTT,Mode)

- Up to 10mW RF power

- Mounts cleanly on all current Raspberry Pis including the Pi Zero

- The firmware is pre-loaded and is easily upgraded via software.

- Frequency: UHF 433-900MHz, VHF 144-220 MHz. NOTE: TX =0, RX=0. Modem select: STM32_HS_GPIO

Note:

  • The upper part is TX,the lower is RX antenna.
  • UHF+VHF
  • SMA,antenna
  • Modem select:STM32_HS_GPIO
  • Set TX frequency,RX frequency
  • TX,RX frequency had better 10M or more apart.
  • SLOT1,SLOT2 support.

Product information