Topband: Comparing antennas was: Re: 160m loaded tower

[Pete Smith N4ZR]

I agree entirely - the challenge is to model a tower and two multiband 
yagis with sufficient fidelity.

73, Pete N4ZR

On 1/18/2023 2:19 PM, James Wolf wrote:
> It's quite possible that the addition of a beam at 60 ft. could cause capacity hat effect changing the current flow in the tower.  It might be worth modeling this.
>
> Jim - KR9U
>
>>> I have a 100 ft tower with jk mid tri 40 on top. When shunt fed, it
>>> was pretty competitive on 160. Recently the antenna seems to be a few
>>> db weaker. The only change was adding another beam at 60ft. Could it
>>> have had an impact? Adding the beam only marginally affected the match.
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