air frequency modulation

Discussion in 'Off-Topic' started by john lawrence, Apr 16, 2008.

  1. john lawrence

    Thread Starter New Member

    Apr 16, 2008
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    I use an Alinco receiver to listen into air traffic control.It has an auto modulator,ie changes through am,fm,whf..Is there a range of frequencies for each modulation ? . I often find that by changing the modulation manually that i can get a reception ,where as on the auto setting there is silence
     
  2. thingmaker3

    Retired Moderator

    May 16, 2005
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  3. beenthere

    Retired Moderator

    Apr 20, 2004
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