1FM(1) General Commands Manual FM(1)
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6 fmscan - scan FM band for radio stations
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9 fm [ -h ] [ -d device ] [ -s freq ] [ -e freq ] [ -i freq ]
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12 fmscan is a program to scan a frequency band for radio stations, using
13 the video4linux interface introduced in 2.1.x series Linux kernels. It
14 shows which ones have a accumulated signal strength of 50% or higher.
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16 OPTIONS
17 -h Print a usage message to standard output, and exit.
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19 -d device
20 Sets device as the device to tune. The default is /dev/radio0.
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22 -s freq
23 Starting frequency for scan, in MHz. Default: 87.9.
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25 -e freq
26 Ending frequency for scan, in MHz. Default: 107.9.
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28 -i freq
29 Increment between scanned channels, in MHz. Default: 0.2.
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31 -t percent
32 Signal strength threshold to consider a channel. Default: 50%.
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35 This process can take a while, and results vary greatly depending on
36 the radio card in use. If your card's hardware cannot report signal
37 strength, it will not produce useful results.
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39 This program may not do much if your radio card's driver doesn't sup‐
40 port fine tuning in 1/16000 MHz offsets. By default, v4l assumes 1/16
41 MHz tuning units, which introduces evil rounding errors on many fre‐
42 quencies. If in doubt, grep for VIDEO_TUNER_LOW in your driver's
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45 Supports only tuner 0 on any given device.
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48 Additional documentation:
49 /usr/doc/fmtools/README
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51 The fmtools homepage:
52 http://www.exploits.org/v4l/fmtools.html
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54 The video4linux webpage:
55 http://roadrunner.swansea.uk.linux.org/v4l.shtml
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58 Russell Kroll <rkroll@exploits.org>, now maintained by Ben Pfaff
59 <blp@cs.stanford.edu.>. This manpage written by Ben Pfaff.
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63 fmscan 1.0.2 FM(1)