HI-PER-MITE audio bandpass filtering test by chaseology published on 2013-03-10T17:54:00Z FLdigi is sending three different cw characters at three different cw pitches; 400 hertz, 700 hertz, and 1000 hertz at equal volume. The HI-PER-MITE filter is used in the second half of the file as a narrow active bandpass filter centered at 700 hertz and does a great job of reducing (@-30db) the other two cw signals of 400 hertz and 1000 hertz. This test was setup to closely represent a typical nearby interfering signal(s) that you might hear when on the air with other cw signals that are nearby your own frequency. The HI-PER-MITE proves itself very useful to be able to successfully filter out the other signals and still be able to continue on with your own qso. For more info on the HI-PER-MITE ACTIVE CW BANDPASS FILTER SEE: http://www.4sqrp.com/HiPerMite.php Genre Morse Code
