flarq(1) ARQ data transfer utility for fldigi


flarq [OPTIONS]


Flarq (fast light automatic repeat request) is a file transfer application that is based on the ARQ specification developed by Paul Schmidt, K9PS. It is capable of transmitting and receiving frames of ARQ data via fldigi, as well as MultiPSK on Windows.


Long options begin with two hyphens and are handled by flarq. The option names may be abbreviated to any unambiguous substring, and the option argument may be separated from the name by a space or equals sign, as per getopt(3).

Short options begin with a single hyphen and are passed directly to FLTK. They may be abbreviated only as indicated.

--arq-protocol TYPE

Set the ARQ protocol. May be either "fldigi" or "multipsk". Defaults to "fldigi".

--arq-server-address HOSTNAME

Set the ARQ TCP server address. Defaults to "". HOSTNAME may be any node name string accepted by getaddrinfo(3).

--arq-server-port PORT

Set the ARQ TCP server port. Defaults to "7322". PORT may be any service name string accepted by getaddrinfo(3).


Enable debugging messages.


Print version information and exit.


Print build information and exit.


Print options summary and exit.

Standard FLTK options

-bg, -background COLOUR

Set the background colour.

-bg2, -background2 COLOUR

Set the secondary (text) background colour.

-di, -display DISPLAY

Specifies the X server to connect to; see X(7).

-dn, -dnd or -nodn, -nodnd

Enable or disable drag and drop copy and paste in text fields.

-fg, -foreground COLOUR

Set the foreground colour.

-g, -geometry GEOMETRY

Set the initial window size and position. Flarq may not honour this option.

-i, -iconic

Start flarq in iconified state. Flarq may not honour this option.

-k, -kbd or -nok, -nokbd

Enable or disable visible keyboard focus in non-text widgets.

-na, -name CLASSNAME

Set the window class. Defaults to "Flarq".

-ti, -title WINDOWTITLE

Set the window title. Defaults to "flarq - <callsign>".

Additional UI options

--font FONT[:SIZE]

Set the widget font and (optionally) size. Defaults to "sans:12".



The main settings file.

The following directories are used to interface with MUAs such as Sylpheed:


Stores incoming email messages.


Stores outgoing email messages.


Stores sent email messages.

The following directories are used for ARQ file transfer:


Stores received files.


Stores files to be transmitted.


Stores transfer logs.


• There are no command line arguments to override the default configuration file and ARQ and Mail directories.


Flarq web site: http://www.w1hkj.com/flarq_main.html

Fldigi web site: http://www.w1hkj.com/Fldigi.html

Sourceforge project page: http://sourceforge.net/projects/fldigi/

ARQ specification by Paul Schmidt, K9PS: http://www.w1hkj.com/FlarqHelpFiles/ARQ2.pdf


Flarq was written by David Freese, W1HKJ.

This manual page was written by Stelios Bounanos <sb[at]enotty(dot)net>.


License GPLv3+: GNU GPL version 3 or later.