[FoxHunt] antennas for harmonic sniffing

[Kuon & Dale Hunt]

Bob wrote:
>Forgot to ask....but I would like the dimensions.

   I used the metric scale on my ruler since it was
   a whole lot easier than trying to convert the
   scaled element dimensions to thirty-seconds of
   an inch.

   Element diameter 1/8" or #8 wire, insulated boom
   Design frequency 730 MHz
   Direct 50 ohm feed.

                    length     spacing from reflector
                 inch     mm       inch     mm

   reflector     8.158   207
   driver        7.957   202        2.04     52
   dir 1         7.295   185        2.88     73
   dir 2         7.025   178        5.21    132
   dir 3         7.025   178        7.49    190
   dir 4         6.690   170        10.90   277

   Note that the spacing between the driven element and
   the first director is very small - less than 3/4".
   Total length is under 11".  It may look a bit funny,
   but it has a nice clean pattern and sharp lobe.  I
   scaled this from W4RNL's "OWA" design:  design info
   and pattern plots for other bands are available on
   his web site at www.cebik.com/radio/

   Might be optimized further - I haven't modeled it.


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