TUNERCTL(1)

NAME
tunerctl - manipulate bktr(4) tuner devices.

SYNOPSIS
tunerctl [-nv] [-f file] -a
tunerctl [-nv] [-f file] name [...]
tunerctl [-q] [-f file] name=value [...]

DESCRIPTION
The tunerctl command displays or sets various variables that affect the behaviour of bktr(4) device tuners. If a list of variables is present on the command line, tunerctl prints the current value of those variables for the specified device. By default, tunerctl operates on the /dev/tuner0 device.

The options are as follows:

-a  Print all device variables and their current values.

-f file
    Specify an alternative tuner device.

-n  Suppress printing of the variable names.

-q  Suppress all printing when setting a variable.

-v  Show the possible values of enumeration and range valued queries. Enumeration values are show in “[]” and ranges are show in “()”.

name=value
    Attempt to set the specified variable name to value.

Depending on the features of a specific tuner, the setting of some variables may not have any effect.

Variable names explained:

chanset
    TV tuner channel set.

channel
    TV tuner channel.

freq
    Frequency in MHz.

afc Automatic Frequency Control.

audio
    Audio source.

mute
    Audio mute.

bright
    Video brightness.

contrast
    Video contrast.

hue Video hue.

usat
    Video ‘U’ (blue) saturation.

vsat
    Video ‘V’ (red) saturation.

FILES

/dev/tuner0
    default tuner device

EXAMPLES
The command

    $ tunerctl chanset=nabcst channel=13

sets the tuner to North American broadcast TV channel 13.

SEE ALSO
bktr(4)

AUTHORS
tunerctl and this manual page were written by Jacob Meuser <jakemsr@jakemsr.com>.