Building and Running MMDVMHost + DMRGateway (2026) on Windows

By HKL, on Thursday 2026-04-23 19:08, tagged: 🏷️Programming  🏷️Radio 

Native MSYS2 Build + Modern BrandMeister Setup Guide

Introduction

If you are running a personal DMR hotspot on Windows, modern versions of MMDVMHost (2026) no longer behave reliably with direct BrandMeister connections.

The recommended architecture is now:

Radio / Hotspot
      ↓
  MMDVMHost
      ↓
  DMRGateway
      ↓
 BrandMeister

This guide combines:

• Windows Native Build Guide
• Modern MMDVMHost + DMRGateway Setup Guide

and shows how to:

✅ Compile from source on Windows ✅ Build standalone .exe binaries ✅ Connect successfully to BrandMeister ✅ Use OpenGD77 hotspot hardware ✅ Run latest 2026 versions stably

Why Use DMRGateway in 2026?

Older MMDVMHost versions could connect directly to BrandMeister.

Modern builds increasingly expect:

• MMDVMHost handles RF / modem
• DMRGateway handles network login / TG routing

So instead of:

MMDVMHost → BrandMeister

Use:

MMDVMHost → DMRGateway → BrandMeister

Part 1 – Build on Windows (MSYS2 UCRT64)

Step 1 – Install MSYS2

Download:

👉 https://www.msys2.org/

Install 64-bit version.

Then open:

MSYS2 UCRT64 Shell

Step 2 – Install Required Packages

pacman -Syu
pacman -Su

pacman -S --needed base-devel mingw-w64-ucrt-x86_64-toolchain git
pacman -S mingw-w64-ucrt-x86_64-libmosquitto
pacman -S mingw-w64-ucrt-x86_64-nlohmann-json
pacman -S mingw-w64-ucrt-x86_64-openssl
pacman -S mingw-w64-ucrt-x86_64-libserialport

Step 3 – Clone Source Code

cd /d/workspace

git clone https://github.com/g4klx/MMDVMHost.git
git clone https://github.com/g4klx/DMRGateway.git

Step 4 – Patch Makefiles for Windows

Both projects need:

• remove -lutil
• add Winsock libraries

MMDVMHost

cd /d/workspace/MMDVMHost

sed -i 's/-lutil //' Makefile
sed -i 's/LIBS    = -lpthread -lmosquitto/LIBS    = -lpthread -lmosquitto -lws2_32 -liphlpapi/' Makefile

DMRGateway

cd /d/workspace/DMRGateway

sed -i 's/-lutil //' Makefile
sed -i 's/LIBS    = -lpthread -lmosquitto/LIBS    = -lpthread -lmosquitto -lws2_32 -liphlpapi/' Makefile

Step 5 – Compile

cd /d/workspace/MMDVMHost
make clean
make -j$(nproc)

cd /d/workspace/DMRGateway
make clean
make -j$(nproc)

Part 2 – Make Standalone Windows EXE

Copy runtime DLLs beside each EXE:

cp /ucrt64/bin/libgcc_s_seh-1.dll .
cp /ucrt64/bin/libstdc++-6.dll .
cp /ucrt64/bin/libwinpthread-1.dll .
cp /ucrt64/bin/libmosquitto.dll .
cp /ucrt64/bin/libssl-3-x64.dll .
cp /ucrt64/bin/libcrypto-3-x64.dll .

Now they run in:

• PowerShell
• CMD
• Double click
• Other Windows PCs

Part 3 – Install MQTT Broker

Modern builds require MQTT support.

Install Mosquitto:

👉 https://mosquitto.org/download/

Run:

mosquitto.exe

Part 4 – Configure MMDVMHost

MMDVMHost.ini

[General]
Callsign=BG7KUH
Id=4615604
Duplex=0

[Modem]
Protocol=uart
UARTPort=\\.\COM8
UARTSpeed=115200

[DMR]
Enable=1
Id=461560401
ColorCode=1

[DMR Network]
Enable=1
GatewayAddress=127.0.0.1
GatewayPort=62031
LocalAddress=127.0.0.1
LocalPort=62032
Slot1=0
Slot2=1

Part 5 – Configure DMRGateway

DMRGateway.ini

[General]
Callsign=BG7KUH
Id=4615604

[DMR Network 1]
Enabled=1
Name=BM
Address=4602.master.brandmeister.network
Port=62031
Password=YOUR_HOTSPOT_PASSWORD
Location=1
Debug=0

TGRewrite=2,9,2,9,1
TGRewrite=2,46007,2,46007,1
TGRewrite=2,46020,2,46020,1

PassAllTG=2
PassAllPC=1
PassAllPC=2

Part 6 – Start Programs

Launch in this order:

DMRGateway.exe DMRGateway.ini
MMDVMHost.exe MMDVMHost.ini

Expected Output

DMR, Sending authorisation
DMR, Logged into the master successfully

Recommended Single Hotspot Settings (China)

Always-On Talkgroups

OpenGD77 Users

Use:

Duplex=0
Slot2=1

Because OpenGD77 hotspot mode is single simplex, not real duplex.

Troubleshooting

Cannot connect to BM

Check:

• hotspot password
• BrandMeister SelfCare enabled
• firewall UDP 62031
• MQTT running

Some TG need PTT first

That means Dynamic TG subscription.

Use BM SelfCare Static TG:

46020 TS2 Static

EXE Missing DLL

Copy runtime DLLs from:

/ucrt64/bin/

Download Ready-to-Use Package

👉 http://qsl.net/bg7kuh/MMDVMHost&DRMGateway(2026-04).zip

Final Notes

Modern MMDVM on Windows is now very stable when using:

MMDVMHost + DMRGateway + MQTT

This architecture gives:

✅ Better BM compatibility ✅ Cleaner TG routing ✅ Future-proof setup ✅ Stable OpenGD77 hotspot support

73 de BG7KUH