[TowerTalk] Tower and Ladder Line Interaction

[Roger (K8RI) on TT]

On 7/23/2014 11:53 AM, Richard (Rick) Karlquist 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

Twist it!  Ladder line, TV ribbon, parallel wires should be twisted.

73

Roger (K8RI)
> 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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