[TowerTalk] Tower and Ladder Line Interaction

[Larry Loen]

Would it be helpful to have a couple of twists in the line as it goes up
the tower?  Or, would that make it worse?  I was thinking that if there
were a couple of "rotations" (a couple, not a huge amount so as to preserve
spacing between them) then each of the two transmission lines would have
the same average exposure to the tower, presumably reducing imbalance in
the lines.


Larry WO7R


On Wed, Jul 23, 2014 at 8:53 AM, Richard (Rick) Karlquist <
richard at karlquist.com> wrote:

> On 7/23/2014 8:06 AM, Kelley wrote:
> he bottom of the tower.
>
>>
>> However, I'm concerned about the interaction between the tower and the
>> ladder line. Some of the info I've read suggests it's not that big of a
>> deal as long as the ladder line is a few inches from the metal. Other
>> info I've read suggests otherwise.
>>
>
> Since you said you are using a tuner, you don't care if the line
> impedance is changed moderately by the proximity of the tower.
> You are probably fine if the spacing to the tower is 2 or 3 times
> the wire spacing of the line.  Try to keep balance by putting
> the line broadside to the tower, rather than end wise.  Also
> avoid running it adjacent to a leg, rather run it up the face of
> the tower.
>
> Again, since you have a tuner, it is very non critical.
>
> Rick N6RK
>
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