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Amateur radio + typical bandwidth of RTTY, PSK31, FSK

  1. Sep 6, 2009 #1
    Does anyone know what the typical bandwidth of the RTTY, PSK31 and FSK amateur radio transmission schemes are ?
  2. jcsd
  3. Sep 6, 2009 #2


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    Science Advisor

    PSK31 has a bandwidth of 31.25 Hz.
    The others vary according to baud rate and frequency shift but would be much greater than PSK31.
    Of the order of hundreds to thousands of Hz.

    Very low shift FSK is used to achieve communication in very difficult conditions.
    Shifts of 3 Hz and a speed in Morse code of one dot per 3 seconds and one dash per 10 seconds are used. These transmissions have very low bandwidths and sound just like continuous carriers to a human ear.
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