2019 V1.7 Jumbospot UHF VHF UV MMDVM Hotspot For P25 DMR YSF DSTAR NXDN Raspberry Pi Zero 3B + OLED+Metal case +Antenna

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Product Description

  1. This board needs to cooperate Raspberry Pi PI3, orange pie, a variety of school development board to use,Running pi-star image
  2. This board has been applied in the GM300 GM3188 3688 950I 338 Vitex DR-1X, other types of repeaters and car stations need to be studied yourself

new MMDVM Open-Source Multi-Mode Digital Voice Modem For Raspberry Pi

Product Description:

  • The MMDVM is intended to be an open-source Multi-Mode Digital Voice Modem,which utilities the power of an ARM processor and a simple analogue interface board.
  • The Multi-Mode Digital Voice Modem is a combined hardware and software development of a modem to handle all amateur digital voice modes. Initially it will support D-Star and DMR,with System Fusion and P.25 coming later,as well as a built-in FM repeater controller.For all modes other than DMR and FM,the modem can be used in simplex or duplex mode,while for DMR and FM full duplex must be used.
  • The MMDVM is aimed at the Arduino Due,Teensy 3.1/3.2 and mbed platforms,the only requirement for the hardware is to be ARM Cortex-M3,M4,or M7 based,and access to raw interrupts and ADC and ADC ports as well as digital signalling ports.

FUTURE:
J2 For Raspberry or MMDVM Mainboard(more stable ,no tf card)
J1 ADD TTL (RX,TX,5V(in),PWR)
STM32F105RBT MCU
ADD NXDN LED
EASY UPGRADE,SHORT BOOT Jumper
Support raspberry 's OLED
Current Does not Support nextion TFT YET!(mmdvm Mainboard and raspberry )

What's in the box:

  • 1 x Board
  • 1 x Moto connection cable

FAQ:

After Connect GM3xx ,when power on,LED Flash fast,if your MD380 PTT Press,COS LED will ON,then you must SEE the BER using DEBUG Port,or in pi-star panel,ADJUST RX_R BER is <=2%,Then Test in Parrot you can hear your voice and PTT LED ON ,testing is Finished! It is Very Easy,I Testing Many Times.

FAQ:what MODE you Tested ? DMR or YSF or P25 I tested is the same.

FAQ:Does i need test Using MMDVMCal Program?If You Tested Fail,Best way Using MMDVMCal To Test GM3XX TX-> Mobile Function.

GM3XX RX-> Function It is Easy To Check Just COS(RECEIVE SIGNAL) LED And MODE LED,if Both LED ON ,GM3XX Rx is work!

FAQ:Does i need to change MMDVM.ini ->TX Invent and RX Invent ?that is Also Import,in MMDVMCal TX Testing Mode you can Press I to Invent TX to Ensure Your GM3xx is invent or not .

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Item Specifics

Demo Board Type: 
 ARM
Brand Name: 
 HQXRTEK

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