RT(4) BSD Kernel Interfaces Manual RT(4)NAME
rt -- AIMS Lab Radiotrack FM radio device driver
SYNOPSIS
rt0 at isa? port 0x20c
rt1 at isa? port 0x284
rt2 at isa? port 0x30c
rt3 at isa? port 0x384
radio* at rt?
DESCRIPTION
The rt driver provides support for the AIMS Lab Radiotrack FM radio tuners and compatible RadioReveal RA300 and SoundForte RadioX SF16-FMI FM
radio tuners.
The Radiotrack is a stereo FM tuner that allows to tune in the range 87.5 - 108.0 MHz, report signal status on the current frequency, and
force audio output to mono.
The Radiotrack cards take only one I/O port. The I/O port is set by the driver to the value specified in the configuration file and must be
either 0x20c or 0x30c.
SEE ALSO isa(4), radio(4)HISTORY
The rt device driver appeared in OpenBSD 3.0 and NetBSD 1.6.
AUTHORS
The rt driver was written by Vladimir Popov and Maxim Tsyplakov. The man page was written by Vladimir Popov.
BUGS
Support for the SF16-FMI cards is rather ugly, volume control is not working and the driver can not correctly determine signal state.
BSD October 8, 2001 BSD
Check Out this Related Man Page
RADIOCTL(1) BSD General Commands Manual RADIOCTL(1)NAME
radioctl -- control radio tuners
SYNOPSIS
radioctl [-f file] [-n] -a
radioctl [-f file] [-n] name
radioctl [-f file] [-n] -w 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.
-w name=value
Attempt to set the specified variable name to value.
-f file
Specify an alternative radio tuner device.
-n Suppress printing of the variable name.
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:
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 to change the reference frequency.
sensitivity
Station locking sensitivity. Can be 5 mkV, 10 mkV, 30 mkV and 150 mkV. Not all cards allow to change the station locking sensitivity.
All the remaining controls (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
The command
radioctl -a
can produce
volume=255
frequency=106.30MHz
mute=off
reference=50kHz
signal=on
stereo=on
card capabilities:
manageable mono/stereo
SEE ALSO radio(4)HISTORY
radioctl command first appeared in OpenBSD 3.0 and NetBSD 1.6.
BSD September 16, 2001 BSD
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