Topband: Size of K9AY Loop

[Dennis W0JX]

I asked Gary, K9AY, this very question. Here is his response to me on Oct 3, 2007:
   
  "The loop's published size (25 feet high, +/-15 feet to the corners) is about 2/3 the maximum size for 160M. At one point, I was using one 30 feet high and +/-20 feet to the corners, which worked well on 160, but had a lousy pattern on 80 -- this is with just a resistor for termination. You can use the larger loop on 80 with a resistor-and-capacitor in series as the termination, but I have done very little study of it."
   
  So it would seem that the max size for a single band, 160 loop, would be about 33 feet on a side. Going larger than that disorts the pattern and degrades the cardiod pattern and F/B ratio.
   
  73, Dennis W0JX/8

       
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