The initial node, described here → gm4slv_allstar_2025 got too cumbersome after adding DMR Bridging, along with handling Echolink.

I decided, since I had a few spare Raspberry Pi boards doing nothing much, to split the DMR Bridging to a separate node.

I removed the DVSwitch bridging from the VHF Gateway node and changed its node ID to 481480 (NNX)

This one is for running DVSwitch to bridge to (at the moment) TGIF TG2354429 (my so-called ID Talkgroup )

I added the DVSwitch software, in the same way described here gm4slv_allstar_2025 and decided to bridge to TGIF instead of Brandmeister.

I also decided to use the md380_emu emulator for the AMBE transcoding.

[General]
Callsign=GM4SLV
Id=235442999
Timeout=180
Duplex=0
 
[Info]
RXFrequency=144900000
TXFrequency=144900000
Power=1
Latitude=60.2885
Longitude=-1.4215
Height=0
Location=GM4SLV Bridge1
Description=MMDVM_Bridge
URL=https://gm4slv.org.uk
 
[Log]
# Logging levels, 0=No logging, 1=Debug, 2=Message, 3=Info, 4=Warning, 5=Error, 6=Fatal
DisplayLevel=1
FileLevel=2
FilePath=/var/log/mmdvm
FileRoot=MMDVM_Bridge
 
[DMR Id Lookup]
File=/var/lib/mmdvm/DMRIds.dat
Time=24
 
[NXDN Id Lookup]
File=/var/lib/mmdvm/NXDN.csv
Time=24
 
[Modem]
Port=/dev/null
RSSIMappingFile=/dev/null
Trace=0
Debug=0
 
[D-Star]
Enable=0
Module=B
 
[DMR]
Enable=1
ColorCode=1
EmbeddedLCOnly=1
DumpTAData=0
 
[System Fusion]
Enable=0
 
[P25]
Enable=0
NAC=293
 
[NXDN]
Enable=0
RAN=1
Id=12345
 
[D-Star Network]
Enable=0
GatewayAddress=127.0.0.1
GatewayPort=20010
LocalPort=20011
Debug=0
 
[DMR Network]
Enable=1
Address=tgif.network
Port=62031
;Jitter=360
Jitter=750
Local=62032
Password=XXXXXXXXXXXXXXXXXXXXx
# for DMR+ see https://github.com/DVSwitch/MMDVM_Bridge/blob/master/DOC/DMRplus_startup_options.md
# for XLX the syntax is: Options=XLX:4009
# Options=
Slot1=0
Slot2=1
Debug=0
 
[System Fusion Network]
Enable=0
LocalAddress=0
LocalPort=3200
GatewayAddress=127.0.0.1
GatewayPort=4200
Debug=0
 
[P25 Network]
Enable=0
GatewayAddress=127.0.0.1
GatewayPort=42020
LocalPort=32010
Debug=0
 
[NXDN Network]
Enable=0
#LocalAddress=127.0.0.1
Debug=0
LocalPort=14021
GatewayAddress=127.0.0.1
GatewayPort=14020

This one is to use for tests and experiments….

• Made a new private node 1398
• Connect 481482 to internal private 1398
• Set up DVSwitch MMDVM_Bridge & Analog_Bridge
  • MMDVM set to use Hotspot ID 235442998
  • Options=StartRef=4000;RelinkTime=0;UserLink=0;TS1_1=733;
• Connected MMDVM_Bridge to DVS_Ph F server - linked to TG733
• Main VHF Gateway Node 481481 connected to Test Node 481482 in “Monitor” mode.

• MMDVM_Bridge set to connect to TGIF, using my alternative DMR ID, as hotspot 235443598
  • this requires the correct User Security passphrase for 2354435
• Also confirmed operation with MMDVM_Bridge connecting as normal 235442998 (my “usual” DMR ID with SSID=98)
• Analog_Bridge set to use TG2354435

— John Pumford-Green 08/06/25 18:44 BST