[ARC5] YG/ZB Demo

[Michael A. Bittner]

Dave, If you have or can get either a TS-1/ARR-1 or a TS-24A/ARR-2, there's you ready-built signal source.  I'd go with a Yagi rather than the cylindrical slot.  More cumbersome but at least a beam.  Mike, W6MAB
  ----- Original Message ----- 
  From: David Stinson 
  To: ARC-5 List 
  Sent: Sunday, July 03, 2011 9:10 AM
  Subject: [ARC5] YG/ZB Demo


  I've been "noodling" about how to demo this system
  in it's original state. I have all the bits and pieces and 
  a "build board" all ready for it, so I can connect it to 
  my other various sets. But how to demo it?

  OK all you "smarter than me" people- 
  I've another hair-brained idea. 
  Suppose I build a YG signal source.
  Very low power. I mean microwatts.
  Build a rotating cylindrical shield with resonant slot
  for radiation. 1/4 wave slot would be about a foot long.
  Drive the can rotation along with an 8-segment switch
  to change code char. for each segment. Radiating stub
  in the can. See diagram:

  http://home.netcom.com/~arc5/gfru/zbdemo.jpg

  The ZB should only hear the demo signal when its
  antenna is in view of the slot. Move the demo transmitter around
  and you get a different code. 
  What a cool show it would make at a hamfest presentation.
  But will it work?

  73 Dave S.

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