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Hey LC, below are three models of my AstroPlane.


1. is the overlays for the 3 models to compare.

2. is the original A/P set to the same tip height of the model with a full 1/4 wave radiator.

3. is the original A/P with the top hat set at 36' feet that I started with.

4. is the A/P with an 89.1996" x 0.625" inches for a full 1/4 wave radiator on top.


When I built my Old Top One with a full 1/4 wave on top my radiator I ended up using 87.5" inches of radiator made up of  2 x 48" x 0.625" sections connected together with 3 hose clamps and about 4" inches of overlap on each of the two tubes.


My on-the-air comparison results between my Old Top One and my New Top One, with results all averaged-out, between the top hat and the full 1/4 wave showed me no difference that I could detect with a couple of weeks taking RX signal reports from about 8 regular buddies all around me from 25 - 60 miles out.


Hope this helps bud.