---
name: "psk31lx"
section: "1"
platform: "linux"
package: "psk31lx"
version: "2.2-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/psk31lx"
---

# psk31lx(1)

a terminal based ncurses program for psk31

## NAME

psk31lx - a terminal based ncurses program for psk31

## SYNOPSIS

**psk31lx \[-h\] \[-l\] \[-q\] \[-t serialdevice\] \[-x\] \[-v\]**

## DESCRIPTION

**psk31lx** uses the soundcard to receive and transmit PSK31, an extremely narrow band HF-mode.  PSK31 is a mode for keyboard QSO’s.  **psk31lx** is a simple terminal based program that uses ncurses to display received text and input text to transmit.  There is also a phase scope and spectrum analyzer to aid in tuning.

## OPTIONS

- **-h**

  printf this message

- **-l**

  Invert phase shift for LSB mode

- **-q**

  Enable QPSK mode

- **-t device**

  Specify the PTT device. Default is /dev/ttyS1. For the first serial device use -t /dev/ttyS0.

- **-v**

  print version number

- **-x**

  TX tracks RX freq

## KEYBOARD COMMANDS

The following keys are used to control psk31lx

- Ctrl A - toggle afc

  - Ctrl B - toggle BPSK/QPSK

  - Ctrl C - exit/terminate

  - Ctrl K - toggle NET on/off

  - Ctrl L - toggle LSB/USB

  - Ctrl R - RX mode

  - Ctrl T - TX mode

  - Ctrl U - tune mode

  - Ctrl K - toggle NET

  - Ctrl W - CW ID

  - Ctrl X - Clear all windows

  - ESC - Exit

  - Up Arror - increase rx freq + 1 Hz

  - Down Arrow - decrement rx freq - 1 Hz

  - Right Arrow - increase rx freq by 8 Hz

  - Left Arrow - decrease rx freq by 8 Hz

  ## SEE ALSO

More information about **psk31lx** is available on its website, http://wa0eir.bcts.info

## BUGS

Please send bug reports to: wa0eir@wa0eir.bcts.info

## AUTHOR

**psk31lx** was written by Hansi Reiser, DL9RDZ and modified by Ted Williams, WA0EIR.