Jussi,

This 46 foot one from DX Engineering is about as big as they come. There are 7 sections beginning with 3” at the bottom and down 1/4” in diameter on each section going up. 7.5 feet per section x 7 sections (they claim 46 feet). Anyway the top is 1.5 in and I suppose if you have them guyed properly you might use 1.25, 1.00 and .75” to get you close to a quarter wavelength. I had four 25G towers with one set of guys for my four square.

I think I would put up 100 feet of 25G with a little top loading, shunt feed it on 160 and run ropes off the top to have a 4 Square on 80m. A significant number of radials (50-100 of them) under each wire and all that tied in with radials under the shunt fed tower for 160 would make for a good setup. You may or may not have to do something to detune that 100 foot tower when you are on 80m.

In my opinion this is much better than messing with many levels of guy ropes on 60 + foot fiberglass poles that probably would not survive the first 40 mph wind with a little ice on the guy ropes.

73…Stan, K5GO

On Sep 21, 2024, at 7:52 PM, Jussi Eloranta <[email protected]> wrote:

Hi,

Does anyone know a good source for approx. 20m fiberglass telescope poles? A 22m pole used to be available from spiderbeam in Germany but now their web page states that available sometime in 2025 :-( This would be for 80m quarter wave vertical(s).

Jussi

--

If you knew the truth, you'd be banned for knowing it.

Jussi Eloranta (AA6KJ)

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