psk31lx(1)
NAME
psk31lx - amateur radio PSK31 modem via soundcard
SYNOPSIS
psk31lx [-d audiodevice] [-q] [-l] [-x]
DESCRIPTION
psk31lx uses a soundcard to receive and transmit PSK31, an extremely
narrow band HF-mode. PSK31 is a mode for keyboard QSO's.
COMMAND-LINE
- -d specifies the audio device to use. If no device is specified, the
- default value /dev/audio is used.
- -q turns on QPSK mode (default is BPSK)
- -l turns on inverted mode. Overrides LSB setting in initialisation
- file
- -x turns on TX-follows-RX-frequency. Overrides TXTRACK setting in
- initialisation file
DATA FILES
psk31lx needs its code table psk31.cod for varicode coding. The default
location for this file is /usr/share/psk31lx/ and can be modified at
compile time. If this file does not exist, psk31lx additionally
searches the current home and working directory for this file.
CONFIGURATION
psk31lx searches for its configuration file at the following places:
$(HOME)/.psk31
$(HOME)/psk31.ini
./psk31.ini
/usr/share/psk31lx/psk31.ini
The configuration file contains lines of the form NAME=NUMBER and
NAME="STRING". It contains the following entries:
CALL Operators callsign, used for CW ID
- FREQ Local IF frequency used by the encoder/decoder. The actual
- PSK31 operating frequency is by FREQ Hz above (below for LSB) the frequency setting of your transceiver
- LSB A value of 1 turns on "inverted mode" for LSB operation (sig
- nificant only for QPSK).
- TXTRACK Setting TXTRACK to 1 turns on the TX-follows-RX-frequency
- switch
- PASSALL Setting PASSALL to 1 turns on the PASSALL flag (display
- decoder output regardless of the DCD flag)
- MACRO1..9 Defines Macro texts which can be transmitted by the appropri
- ate function keys F1..F9
HARDWARE INTERFACE
The simpliest way to use PSK31 is to connect input and output of the
soundcard to your transmitter, and to use the TRX's internal VOX for
keying. psk31lx does not yet provide functionality for explicitly keying the transmitter. It also does not yet control the sound cards
mixer, thus input and output control must be done via an external audio
mixer tool.
USE
This document does not yet contain information on how to use PSK31. If
you are new to PSK31, please have a look at the operation hints given
in MSDOS or Windows software packages for PSK31.
SEE ALSO
Currently my PSK31 for Linux/Soundcard is distributed via my personal
amateur radio home page located at http://home.pages.de/~dl9rdz/hamradio/
Excellent information about PSK31 in general and lots of PSK31 related software can be found at the official PSK31 homepage, located at http://bipt106.bi.ehu.es/psk31.html
AUTHOR
psk31sb was written by Hansi Reiser (Email: Hansi.Reiser@stud.unierlangen.de or dl9rdz@amsat.org; Amateur Packet Radio:
dl9rdz@oe5xbl.#oe5.aut.eu)
- It is based on algorithms developed by Peter Martinez G3PLX and based
on the MSDOS software for PSK31 written by Andrew Senior G0TJZ and
Peter Martinet G3PLX.