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

[James Wolf]

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.