I used #4 XHHW stranded aluminum wire spaced 5 inches
for Zo= 450 ohms. I have gone as far as 1000 feet with
it. The loss on 40 meters is a few tenths of a dB.
I don't see why you can't go 3000' feet with the same
setup. I have 50 ohm to 450 ohm transformers at both
ends, so no transmatch is involved, etc. See photos
of it at: http://www.n6rk.com/openwire.html
Rick N6RK
Paul said:
> Hi guys,
>
> I have just bought a farm, and have need to run about 3000' of feedline
> to get the antennas up to the top of the mountain in back of our
> property. I would like to put up a full wave 160M loop, maybe a wire Log
> periodic, and some other wire antennas up there but I need to run
> feedline from the shack at the bottom of the hill.
>
> I know I must use some form of balanced open wire feedline but the
> question is, can 3000' work and if so, what spacing, wire size etc.
> should I be using? Just HF, and mainly 160 - 40M. I have miles of #6
> aluminum wire, which I would like to use but don't know how it will
> perform with RF. It is old stranded high voltage transmission wire, with
> black plastic insulation, single conductor, nice continuous lengths.
>
> Your thoughts?
>
> Thanks!
>
> Paul
> VE7KHz
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
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> any questions and ask for Sherman, W2FLA.
>
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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