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Configuring the Raspberry Pi using a GMSK Modem
and G4KLX software
D-Star Compatible Hotspot using GMSK Node Adapter setup guide by K6JM

(Shortcut to G4KLX Config Screenshots)

Load image file
First download the westerndstar image created by Brian, GW6WTK, described here.

G4KLX produces two sets of programs – a Repeater group and a Gateway group.  You’ll be using the “dstarrepeater” program and the “ircddbgateway” program – they run at the same time and “talk” to each other.  Dstarrepeater controls the GMSK Modem board and the analog radio; ircddbgateway talks to the internet and is in charge of linking and routing to other repeaters, gateways and hotspots on the internet.

Run KLXUPDATE to get the latest program versions
Before configuring the two programs, you should run a provided script that will update the programs to the latest versions:

Click the Terminal icon on the top line, then into the command line window enter:

Configure G4KLX programs
Although there seem to be a lot of fields and options, in fact most of the default values are correct.  There are only a few where you need to enter your own values.

Configure the dstarrepeater program:

Next, configure the ircddbgateway program

Reboot Linux

Now, play with your Pi.  Later, you may want to come back here and look at the rest of this page.  But first, go have some fun!

Other details (when you are ready)

Keeping the G4KLX programs up to date:
Periodically, log onto the Pi, close dstarrepeater and ircddbgateway, open a Terminal window and run klxupdate as show above, for both repeater and gateway.

Linking from your PC: While at your PC, you can use the Remote Control program that’s part of the ircDDBGateway package to control linking and unlinking.  It’s not necessary, since you can also do that via RF from your D-Star radio, but it is convenient.  If on Windows, install the latest Beta package from Yahoo Group ircDDBGateway—get the exe that installs on Windows.  Then set up a desktop shortcut to launch the RemoteControl.exe program from c:/Program Files/ircDDBGateway folder.  On the Pi, you need to configure ircddbgatewayconfig’s Remote tab to enter a port and password, which RemoteControl needs to connect.

DTMF Linking: You can also issue link commands over RF using the DTMF buttons on your D-Star radio’s mike to command ircDDBGateway to do linking.  See the DTMF table at near the front of the G4KLX Gateway manual, available from the ircDDBGateway Yahoo Group’s Files > Documentation folder. 

Callsign Routing: If you get interested in callsign routing and want your own ircDDB Gateway, you will need a gateway callsign different from your personal callsign.  Some countries call this a "club callsign" or repeater callsign.  This gateway callsign must be registered with ircDDB BEFORE it is registered with a Trust D-Star repeater/gateway.  See www.gmskdvnode.info/#Callsign_Routing for more information.

Logging: SD cards have a limited life for writes, perhaps several hundred thousand.  For that reason, many people do not  turn on logging in the dstarrepeater and ircddbgateway programs.  The exception is if there is a problem – logging can be turned on temporarily to help solve the problem.

D-Star® is a registered trademark used for communication equipment (repeaters and transceivers) for amateur radio communications, and owned by Icom Incorporated.

Copyright © 2009-2017 James M. Moen. All rights reserved.