Originally posted by peterhr
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The Squeezed Franklin does not behave properly when wire dia exceeds 2.5 mm.
Simulation with 3/16" (4.75 mm) tube, when tweaked to get a good Gain, resulted in very high SWR. which could not be brought down to a reasonable value even with adjustments of matching stub.
When I tweaked it to get a reasonably good SWR, the Gain became very low.
A failed experiment!!!
Why dont you try a normal Franklin which can be installed outdoors?
See this site to get a guidance for method of construction of outdoor type Franklin:
http://www.lesaunier.com/htm/franklin1_eng.htm
I am posting below few pictures from above site for your quick reference:
franklin_7.JPG...franklin_8.JPGfranklin_3.jpg Franklin_gabarit.jpg
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