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       fmscan - scan FM band for radio stations


       fm  [ -h ] [ -d device ] [ -t tuner ] [ -s freq ] [ -e freq ] [ -i freq
       ] [ -q ]


       fmscan is a program to scan a frequency band for radio stations,  using
       the video4linux interface introduced in 2.1.x series Linux kernels.  It
       shows which ones have a accumulated signal strength of 50% or higher.

       -h     Print a usage message to standard output, and exit.

       -d device
              Sets device as the device to tune.  The default is  /dev/radio0.

       -t tuner
              Sets  tuner  as the tuner on the selected device to adjust.  The
              default is tuner 0.  Most  radio  devices  have  only  a  single

       -s freq
              Starting frequency for scan, in MHz.  Default: 87.9.

       -e freq
              Ending frequency for scan, in MHz.  Default: 107.9.

       -i freq
              Increment between scanned channels, in MHz.  Default: 0.2.

       -t percent
              Signal  strength threshold to consider a channel.  Default: 50%.

       -q     Quiet mode.  Suppresses progress output.


       This process can take a while, and results vary  greatly  depending  on
       the  radio  card  in use.  If your card’s hardware cannot report signal
       strength, it will not produce useful results.

       This program may not do  much  if  your  radio  card’s  driver  doesn’t
       support  fine  tuning in 1/16000 MHz offsets.  By default, V4L2 assumes
       1/16 MHz tuning units, which introduces evil rounding  errors  on  many

       Supports only tuner 0 on any given device.


       Additional documentation:

       The fmtools homepage:


       Russell  Kroll  <>,  now  maintained  by  Ben  Pfaff
       <>. This manpage written by Ben Pfaff.

                                 fmscan 1.0.2                            FM(1)