I have a450 ohm window line running on a rope carrier from the mast to the
eve. I put more than one twist on it. Probably too many. The twist was
generally to stop the flat line from planing in the wind hence flapping up
and down. Wise truckers put a half twist in the flat tape hold downs on
their loads to stop the flapping. Just watch the straps. A second reason
is that less rain rund down the line into my shack. The twist causes the
rain to run up hill to folow the same wire hence drops off. I also put a
rain dripper (a piece of twine just inside the eve) to cause the res of the
rain to drip off before entering the shack.
Hope this helps
Chris opr VE7HCB
At 05:20 PM 2002-03-31 -0600, georgekr5c wrote:
>Back in the time of outside TV antennas and 300 ohm twin lead, we always put
>some twist in the twin lead. Forgotten the exact reason but that is what we
>did.
>
>Would that have any value if running say 450 ohm ladder line alongside a
>tower. I know that proper spacing should be maintained but would the
>additional twist be of any benefit?
>
>Also refresh my memory of the advantage of twisting if there is any.
>
>Thanks.
>
>George KR5C
>SOC #39, BOFARS 162
>
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