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Re: [TowerTalk] tower resonances

To: Rudy Severns <>
Subject: Re: [TowerTalk] tower resonances
From: jimlux <>
Date: Tue, 10 Feb 2009 20:52:26 -0800
List-post: <">>
Rudy Severns wrote:
> I must apologize to the reflector for asking my original question in such a 
> broad way when my interest is actually much narrower.
> My question really should have been: are there other ways to determine tower 
> resonances that do not require elegant instrumentation but actually work?
> Thanks and 73, Rudy N6LF 

Let's turn the question around.. why would you want to know whether the 
tower is resonant (unless you're actually using it as a radiator).

There's the idea that it might corrupt the pattern of an adjacent 
antenna, but then, what you're really interested in is whether the 
pattern is potentially corrupted.

When modeling antennas, I do things like model rain gutters etc to see 
if they'll have an effect, but there, I'm not really looking for 
accuracy in the model, but just to see if there's any current in the 
potential parasite. If there isn't, then I assume it's not going to 
affect the pattern much. But the model of the gutter is just a single 
wire (i.e. if the wire has current, so will a big old steel gutter 
nailed to the house).

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