[TowerTalk] Detuning a tower .... was Open-wire transmission line

[Richard (Rick) Karlquist]

If you run a wire down the center of a grounded tower, then the tower 
functions as a Faraday cage so that the wire is non radiating.  It will
still make a dandy shielded transmission line.  If you run a wire
along side the tower but outside the tower, then you get the dual modes,
one radiating and one non-radiating.  Good question though ...

73
Rick N6RK

On 1/2/2024 9:49 AM, David Gilbert wrote:
> 
> 
> Hi, Joe.
> 
> Detuning a tower and shunt feeding a tower seem to be essentially the 
> same mechanism except for whether there is a feed or not, and I've often 
> wondered why running a wire down the center of a tower wouldn't create 
> the same coaxial section as surrounding the tower with multiple wires. 
> Has anyone successfully tried this?  I couldn't find much of anything by 
> searching online.
> 
> Take care es 73,
> Dave  AB7E
>