Projects / SvxLink


SvxLink is a flexible general purpose voice services system for ham radio use. It can act as a repeater controller or operate on a simplex channel. The server consists of a core that handles the connection to the transceiver. The transceiver audio is connected to the PC through the sound card, and the PTT is controlled by a pin in the serial port. The voice services are loaded into the core as modules. Examples of existing voice services are a help system, a module that plays back everything you say, a module to connect to other EchoLink stations, and a voice mail module. The project also includes an EchoLink client GUI application (Qtel).

Operating Systems

Recent releases

  •  27 Nov 2011 09:00

    Release Notes: This is a bugfix release for the 11.11 version released earlier. Two serious bugs have been fixed, one which caused RemoteTrx to crash on disconnections and another which could cause a transmitter to hang in certain setups.

    •  06 Nov 2011 15:27

      Release Notes: The main focus in this release was to get the Qt code (e.g. Qtel) moved from using Qt version 3 to Qt version 4. Note that the Qtel config will be lost when installing the new version. A number of bugs have been fixed, both in Qtel and SvxLink, and smaller additions to existing features have been made.

      •  06 Nov 2011 15:20

        Release Notes: This release has support for the ALSA sound system. A better audio codec, Speex, is now used in EchoLink connections between SvxLink nodes, improving the audio quality a lot. A new module, PropagationMonitor, will announce propagation alerts sent out from or A new module, SelCallEnc, is used to send selective calling sequences by DTMF commands. RemoteTrx now has a simple fallback repeater mode if the connection to the SvxLink core is lost. SvxLink Server configs are now stored in /etc/svxlink. A new directory layout for event handler scripts and language packs.

        •  28 Apr 2009 17:45

          Release Notes: The server has a new DTMF decoder and a new tone detector. The SpanDSP library is no longer required. The RemoteTrx protocol has been improved with audio compression and authentication. The EchoLink module is now able to register itself on the EchoLink "link status" page. APRS functionality has been added so that position and other useful info can be sent to the APRS network. Qtel has three new translations: German, Spanish, and Italian. A number of bugs have been fixed.

          •  02 Aug 2008 18:54

            Release Notes: This is mainly a bugfix release. The previous release was very unreliable and had a number of flaws that are now fixed. If you are running the 080518 release, you should upgrade.


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