[TowerTalk] Tower and antenna decisions

[Jim Brown]

On 10/24/2013 8:37 AM, Larry Loen wrote:
> I know that stations are way down to inaudible on my Windom at 43 feet.  Height is worth_a lot_.

I wouldn't attribute all of that to height -- what you can HEAR is 
primarily the result of antenna directivity and noise rejection. Windoms 
are notoriously bad for noise rejection, because they are badly 
unbalanced, so noise picked up on the transmission line couples to the 
antenna.  Windoms also have "random" directivity on each band.

Also, it's worth studying N6BV's excellent work on High Frequency 
Terrain Analysis in the ARRL Antenna Book, and also modeling in NEC.  
Higher is not always better.

73, Jim K9YC