it gonna be unguyed, but attached somehow to the house, using L-brackets or
something like that at the very top - at 27' above the ground.
I have plenty of plastic and aluminum military 4-footers, but came up with
idea that plastic telescopes gonna be much lighter, like 10 pounds instead
of 50 :)
On Thu, Sep 18, 2008 at 6:54 PM, Dan Zimmerman N3OX <n3ox@n3ox.net> wrote:
> "What if i use lower 40-50' portion of their 60-footer? Is it gonna say
> straight?"
>
> Guyed? Unguyed?
>
> You won't be able to put much balun up very high, in any case, honestly.
> You might consider running ladder line down the pole, an electrical half
> wavelength of it, and putting the balun there. You'll have some extra
> ladder line if you're doing the 80m version, but maybe it can continue down
> the house or you can loosely coil it on a messenger line.
>
> The poles are overall pretty sturdy. I put up a half-wavelength (not a
> typo) voltage fed inverted L for 40m as a temporary installation on my 40
> foot pole, 40 feet up and 26' out "horizontally" from the tip. That was
> 18AWG wire and then maybe 20 more feet of light cord to a tree. The pole
> bent like a fishing rod does but I didn't have more than a few feet of sag
> in the "horizontal" section. I only had the first (bottom) section guyed.
>
> The 60 footer is not really designed to have the same proportions as the 40
> footer... the tip section of the 60 footer is thinner than the tip section
> of the 40 footer. The 60 footer is more designed to be a vertical antenna
> support for the low bands. It's overall a more flexible object under its
> own weight and wind loads.
>
> The bottom sections are big and stiff, so it would be certainly be better
> than the 40 footer at a given height for supporting wire antennas... but it
> tapers down aggressively at the top, I think so that it doesn't get too
> topheavy for people who want to tip up a vertical.
>
> 73,
> Dan
>
>
>
>
>
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