RADIOCTL(1) BSD Reference Manual RADIOCTL(1)
radioctl - control radio tuners
radioctl [-f file] [-n] -a radioctl [-f file] [-n] name radioctl [-f file] [-n] name=value
The radioctl command displays or sets various variables that affect the radio tuner behavior. If a variable is present on the command line, radioctl prints the current value of this variable for the specified dev- ice. By default, radioctl operates on the /dev/radio device. The options are as follows: -a Print all device variables and their current values. -f file Specify an alternative radio tuner device. -n Suppress printing of the variable name. name=value Attempt to set the specified variable name to value. Values may be specified in either absolute or relative forms. The rela- tive form is indicated by a prefix of '+' or '-' to denote an increase or decrease, respectively. The exact set of controls that can be manipulated depends on the tuner. The general format (in both getting and setting a value) is name=value The name indicates what part of the tuner the control affects. Write only controls: search Only for cards that allow hardware search. Can be 'up' or 'down'. Read-write controls: frequency Float value from 87.5 to 108.0. volume Integer value from 0 to 255. mute Mutes the card (volume is not affected), 'on' or 'off'. mono Forces card output to mono, 'on' or 'off'. Only for cards that allow forced mono. reference Reference frequency. Can be 25 kHz, 50 kHz and 100 kHz. Not all cards allow the reference frequency to be changed. sensitivity Station locking sensitivity. Can be 5 mkV, 10 mkV, 30 mkV and 150 mkV. Not all cards allow the station locking sensitivity to be changed. All the remaining controls (signal, stereo and card capabilities) are read-only and can be viewed using option -a.
The following environment variable affects the execution of radioctl: RADIODEVICE The radio tuner device to use.
/dev/radio radio tuner device
The command $ radioctl -a can produce volume=255 frequency=106.30MHz mute=off reference=50kHz signal=on stereo=on card capabilities: manageable mono/stereo
radioctl command first appeared in OpenBSD 3.0. MirOS BSD #10-current September 16, 2001 1
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