Many years ago, Dentron sold a 40m vertical just as you describe.
I have 5 of them .. three are in place, and the other two are under 8"
We have up to 18" more forcast for today and tomorrow, so will have to
wait until it all melts or blows away to dig out the other two and
measure the diameters/lengths.
When I can, you'll get the info.
Quoting Paul Sturpe <email@example.com>:
> I am looking for a design for a full size 40 meter, 1/4 wave, self
> supporting vertical.
> I am thinking that telescoping aluminum tubing is the best way to go, but I
> am not sure what sizes are needed in order to be self supporting (no guys.)
> It has been suggested that I simply use half of an element from the 40 meter
> yagi as described in the ARRL antenna book. This in fact would work, but is
> probably design over kill for a vertical.
> Does anyone know of plans for a design that meets my criteria?
> Paul, W3GQ
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