[ARC5] Aerial noise [Was BC-230 mic]

[Leslie Smith]

  Dear all,
  To the preceding we must add the idea that a loop (aerial) picks up
  the magnetic component and/or the electrostatic component of the
  radiated field.
  We all know that some loops are built inside copper pipe or wrapped in
  foil to 'hear" only the magnetic component.
  That's another point of interest in building a low noise aerial.  

  I'm going to adapt Lloyd Butler's 'rig' for 160 and see if it can be
  made to work at a higher frequency (or even as high as 80m).
  At a higher frequency layout and "strays" will make noise cancellation
  more difficult - but what is "higher"?  80m?  40m?  6m?
  
  Lloyd has an interesting understanding of theory, and matches that
  with practical work (as good practice demands)
  For example:

  Topic #1.  Unwanted Coupling of Stray Signal or Noise
  Link:  http://users.tpg.com.au/users/ldbutler/NoiseCancelling.htm

  Topic #2.   Antenna Noise and Signal Cancelling at LF
  The Link:    http://users.tpg.com.au/users/ldbutler/LFNoiseCancel.htm

  Topic #3:  Noise blanking.
  The link:  http://users.tpg.com.au/users/ldbutler/NoiseBlank.htm

   Nice work by Lloyd, yes?


  73 de Les Smith
  vk2bcu at operamail.com
  

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