[TowerTalk] Is there a point of diminishing returns on gain for stacking HF beams?

[Steve Hunt]

Roger (K8RI) wrote:
> You have to double the number of antennas for each "theoretical" 3 db 
> gain. It gets big and expensive fast and there are other factors that 
> limit you to less than the theoretical gain.
>   
Also, if you are talking about vertical stacking you can actually make 
things worse at low take-off angles, depending on how high you can get 
the lower antenna(s). Take a look at this analysis on my website:
http://www.karinya.net/g3txq/vertical_stacking/

73,
Steve G3TXQ