remotetrx1

Usage

Overview

remotetrx is the SvxLink remote transceiver application. It is used to connect to a receiver and/or transmitter and then the main SvxLink server can connect to the remote transceiver server via TCP/IP to get audio to/from it.

It is also possible to link via RF instead of via TCP/IP. An example use of the latter would be if the repeater is placed in a remote location where there is no network. Then networked remote receivers can be linked up to the repeater via RF from a link site where network is available.

The setup is pretty straight forward. The setup of a receiver or transmitter is done in the same way as in the SvxLink server so use the svxlink.conf(5) manual page as a reference for that. The remotetrx specific configuration is described in the remotetrx.conf(5) manual page.

On the SvxLink server side you need to configure a networked receiver/transmitter. That is described in the svxlink.conf(5) manual page in the Networked Receiver/Transmitter Section. If using multiple receivers you also want to configure a voter and make proper calibration of the signal level detector on each receiver.

Options

--help

Print a help message and exit.

--daemon

Start the SvxLink remote receiver server as a daemon.

--runasuser

Start RemoteTrx as the specified user. The switch to the new user will happen after the log and pid files has been opened.

--logfile=log file

Specify a log file to put all output into. Both stdout and stderr will be redirected to the log file.

--pidfile=pid file

Specify a pid file to write the process ID into.

--config=configuration file

Specify which configuration file to use.

Files

/etc/svxlink/remotetrx.conf (or deprecated /etc/remotetrx.conf)

The system wide configuration file. See remotetrx.conf(5) for further details.

~/.svxlink/remotetrx.conf

Per user configuration file. See remotetrx.conf(5) for further details.

/etc/svxlink/remotetrx.d/*

Additional configuration files. This directory is setup by the CFG_DIR configuration variable.

Environment

ASYNC_AUDIO_NOTRIGGER

Set this environment variable to 1 if you get an error about ioctl: Broken pipe during remotetrx server startup when using OSS audio.

ASYNC_AUDIO_ALSA_ZEROFILL

Set this environment variable to 0 to stop the Alsa audio code from writing zeros to the audio device when there is no audio to write available. ASYNC_AUDIO_UDP_ZEROFILL Set this environment variable to 1 to enable the UDP audio code to write zeros to the UDP connection when there is no audio to write available.

HOME

Used to find the per user configuration file.