[TowerTalk] Inverted L Question

[Chris Adams]

Dennis,

A few questions:

1.  How much are you trimming/extending the vertical section?
2.  Is your SWR meter designed to work with 75 ohm cable or 50 ohm cable?

Changing the number of radials should have made a measurable difference 
but it might not have been that much. 

Chris
n4vi/0

DENNIS BRICKEY wrote:
> I realize this is not a tower question, but the antenna gurus hang out here.  Hopefully some bandwidth can be tollerated for an antenna question. 
>
> I am working on a 160 meter inverted L and having some difficulty getting the match correct.  I'd appreciate any input. 
>
> 175' total wire length.....100' vertical 75' sloping horizontal 
>
> 23 (qty) 130' radials. 
>
> Fed with 75 ohm cable hardline through a variable capacitor. 
>
> I've trimmed and extended the vertical section and adjusted the cap with each length change.  The low swr point is always 2.8:1.  Essentially the only thing changing is how 
>
> much the capacitor meshes.  
>
> I started with 16 radials and thought adding more would help the match, but it has not changed. 
>
> Any Ideas? 
>
> All advice appreciated. 
>
> Thanks, 
>
> Dennis N4DD
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