Software MPT1327 Trunking System Controller

Featured in the August 2014 edition of RadCom - the magazine of the Radio Society of Great Britain


SoftTSC is an implementation of an MPT1327 Trunking System Controller (TSC).

It implements a basic TSC which operates on a single channel and will connect voice calls between radio units (RU).

It works by using your computer's sound card to send and receive, in real time, the FFSK control signals required to control the RU's on the system.

Setting up this system requires some knowledge of MPT1327 systems. The best reference for this is the MPT1327 specification which is available for download, free, from the UK OFCOM website.

Software architecture

Diagram of TSC architecture

What is here

Here you can download a software implementation of a basic MPT1327 trunking system controller.

How to use

You will need a Linux installation to use this software; this software does not yet run on Windows. The instructions in the README show how to get this software running on Fedora 20. If you have a different Linux distribution you'll need to adjust these instructions to suit.

Radio Settings

A big part of this project was gaining an understanding of all the settings an MPT1327 radio uses. The basic settings are listed here.


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Previous comments

  • Brendin posted 2019-04-08 21:04:49.514 (701)

    hi there paul defnitly an intresting project you have there :) gretings from zl2sb from newzeland i am working on makeing this in to something that could be used in ham radio and have been folowing along with it the only problem i curently am having is that i am strugling to get the program to biuld ( i know some lynix but it is still a new thing for me ) and was anting to know if you could provied some help with regards to that 73

  • Andy posted 2014-07-22 20:35:45.168038 (104)

    Hi Paul, A really interesting project. Great article in Radcom. I set up a lot of MPT1327 systems in the 1990's using Fylde Microsystems controllers and TSCs and have collected a few radios, this has spurred me into re-kindling the interest in these systems and experimenting on the amateur bands. I used to use a Marconi 2955 with a Trunked adapter for testing. I have a 2955 but sadly no trunking adapter - must keep an eye out for one, really useful! Great job, thanks Andy