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RADIOCTL(1) FreeBSD General Commands Manual RADIOCTL(1) NAME radioctl - control radio tuners SYNOPSIS radioctl [-anv] [-f file] radioctl [-nv] [-f file] name radioctl [-n] [-f file] name=value DESCRIPTION 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 device. By default, radioctl operates on the /dev/radio device. The options are as follows: -a Print all device variables and their current values. This is the default, if no parameters are given to radioctl. -f file Specify an alternative radio tuner device. -n Suppress printing of the variable name. -v Show the possible values of queries. name=value Attempt to set the specified variable name to value. Values may be specified in either absolute or relative forms. The relative 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: channel Specifies the TV channel. Integer value from 0 to 150. Using the channel control puts the tuner in "TV" mode. chnlset Specifies the TV channel set. The tuner uses the current channel set to derive a frequency from the channel. The following is a list of valid channel sets: nabcst U.S.A. Broadcast cableirc U.S.A. Cable IRC cablehrc U.S.A. Cable HRC weurope Western Europe jpnbcst Japan Broadcast jpncable Japan Cable xussr Former U.S.S.R. and C.I.S. countries australia Australia france France frequency Specifies the FM frequency in MHz. Float value from 87.5 to 108.0. Using the frequency control puts the tuner in "radio" mode. 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 (mode, signal, stereo and card capabilities) are read-only and can be viewed using option -a. ENVIRONMENT The following environment variable affects the execution of radioctl: RADIODEVICE The radio tuner device to use. FILES /dev/radio radio tuner device EXAMPLES Print all device variables, along with their current values: $ radioctl -a volume=255 channel=0 chnlset=weurope frequency=106.30MHz mute=off reference=50kHz signal=on stereo=on mode: radio card capabilities: manageable mono/stereo SEE ALSO radio(4) HISTORY radioctl command first appeared in OpenBSD 3.0. FreeBSD 14.1-RELEASE-p8 September 12, 2015 FreeBSD 14.1-RELEASE-p8