$ gpsbabel -i ozi -f balise_ffvl.ozi -o garmin -F usb:
$ gpsbabel -t -i garmin -f usb: -o kml,units=m -F test.kml
$ gpsbabel -t -i garmin -f usb: -x track,start=2007052206,stop=2007052209 -o kml,units=m -F test.kml