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public:radio:2025:gm4slv_allstar_2025

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2025 Radio Topics

GM4SLV Allstar 2025

New explorations into Allstar and Bridging

Hardware

PlatformRapsberry Pi
InterfaceCM108 Soundcard - modified
RadioFT-1500M
Frequency144.9125MHz
Allstar Node 48148
Dashboards http://gm4slv.plus.com:42111/

DVSwitch Bridging

To investigate the bridging of Allstar analogue nodes and DMR I installed DVSwitch on the Allstar node.

Instructions here: ASL to DMR Bridge

My configs

/etc/asterisk/rpt.conf before bridging added

/etc/asterisk/rpt.conf after bridging added

/etc/asterisk/modules.conf after bridging added

/etc/asterisk/extensions.conf after bridging added

Installing DVswitch

Installing DVSwitch was a bit convoluted, as my old version of the ASL Beta 2.0.0 wasn't up to date… and needed some work to add necessary APT gpg keys, and adding the dvswitch repository.

apt-get update –allow-releaseinfo-change to accept the release name change

Adding DVSwitch repository keys

As root :

apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 0E98404D386FA1D9
 
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 6ED0E7B82643E131
 
curl -s http://apt.allstarlink.org/repos/repo_signing.key | apt-key add - && apt update
 
wget http://dvswitch.org/buster
 
chmod +x buster
 
./buster
 
apt-get update
 
apt-get install dvswitch

Configuring DVSwitch

The changes were made to the existing asterisk configs, as per the pdf document, then DVSwitch was installed, and then the pdf document was followed again to make the necessary configs to:

/opt/Analog_Bridge/Analog_Bridge.ini

and

/opt/MMDVM_Bridge/MMDVM_Bridge.ini

everything seemed to work okay - although there I think one of the UDP ports was initially wrong for the USRP traffic in Analog_Bridge.ini and I had to double check by looking in

/etc/asterisk/rpt.conf

[1999]
rxchannel = USRP/127.0.0.1:34001:31001

and setting Analog_Bridge.ini to match:

[USRP]
address = 127.0.0.1              
txPort = 31001                        
rxPort = 34001  

John Pumford-Green 03/06/25 17:55 BST

Further Information

public/radio/2025/gm4slv_allstar_2025.1748972009.txt.gz · Last modified: by john