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MMDVM shield for STM32 Nucleo (diagram, PCB Gerber, BOM)
Diagram of the MMDVM board for Nucleo STM32F4 As I found the Txco work on 3V3, but your circuit diagram marked the 3V only for the output of LP2950ACZ. (Traduction) Bonjour Merci de votre travail. We have build repeater using Gerber v2 project from Your site. Nucleo,
The Shopping List for your Home-Brew MMDVM Repeater
PDF fileInterfacing the MMDVM to a pair of CDM 1250 Uhf Radios By: Mark K Ward N6IB The Shopping List for your Home-Brew MMDVM Repeater Project using Motorola CDM 1250 Uhf radios Before we attempt getting started on this project, you will first need go shopping for a few essentials before beginning: 1. Raspberry Pi 3 (Amazon) $39-45ea 2.File Size: 1MBPage Count: 22
Build your MMDVM Hotspot yourself - F5UII
Bonjour Manu, La datasheet du composant ADF7021 indique une bonne sensibilité théorique de -122 dBm, soit 0,18 µV (pour modulation 2FSK). J’ai donc l’impression que cela doit pouvoir être un bon récepteur. Pour en faire un relais, il vous faudra fonctionner MMDVM_HS en mode duplex, avec
DE BI7JTA MMDVM BLOG 2020: Configure Guide for MMDVM
6, @DW4CHZ maxtrac motorola ,two radio are working good without any adjustment on board 7, @BI7JTA CDM1250 /CDM1550/GM338 need to do: 1) Re program radio follow user guide, 2) Change pi-star config TXInvert=0 8, @F4HES GM340 TXInvert=0 9, @DW7FCV ICOM ID-4100 DStar bandwidth to narrow 12 10, @IW6BFE MTR2000 add 22uF capacitor to TX, view the end part of this blog
MMDVM | gb3wb
We are using a Yaesu DR-1X repeater with an MMDVM KI6ZUM board and TCXO on an Arduino Due plugged into the rear 15w HD connector of the DR-1X. The MMDVM is run by a tiny Raspberry Pi 3 computer with the KB5RAB image installed. You can now operate through GB7IT on 439 MHz with a -9 MHz TX shift using DMR. You listen on 439MHz
Key D2RG members Yuan BG3MDO and Andy CA6JAU have the MMDVM_HS-AMBE's in hand and are starting work on getting them up and running with firmware and any hardware mod's that need to be done. Hope fully soon we will be able to release a bit of a outline on how to interface to the DVSI AMBE3003 so those that have the interest
Building a Digital Mobile Radio Repeater Part 1: MMDVM
MMDVM is an open source software project licensed under GPL v2, but with a note to say that it is intended for amateur and educational use only, with commercial use strictly forbidden. This does seem possibly at odds with the GPL licence, but is likely to do with digital codec patents. The MMDVM firmware supports the following digital modes: D-Star
How to make a MMDVM Digital Repeater - N5AMD's Digital
The MMDVM-Repeater board is a lot like a hotspot, except it doesn’t have a radio built onboard. Instead, it uses cables to wire directly into the IO pins of the radio(s) you choose. The MMDVM/Raspberry-Pi combo will turn a single analog radio into a high powered hotspot or 2 radios into a fully featured digital voice repeater.
GitHub - juribeparada/MMDVM_HS: MMDVM HotSpot: firmware
Introduction. This is the source code of ZUMspot/MMDVM_HS firmware for personal hotspots (ADF7021 version of the MMDVM firmware), based on Jonathan G4KLX's MMDVM software. This firmware supports D-Star, DMR, System Fusion, P25 and NXDN digital voice modes and POCSAG 1200 pager protocol.
Repeater Builder STM32-DVM
This board *WILL* run the latest version of MMDVM Host ~INCLUDING~ the NXDN protocol. Since I build all boards by hand, there are times that production cannot keep up with the incoming orders. I strive to have orders shipped NO LATER than 10 days from the order date.

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