[TowerTalk] new steppir yagis

[Bill Coleman]

On Apr 23, 2005, at 1:02 PM, Al Williams wrote:

> The other modification would be to add 75/80m capability to the  
> existing Monster by using either loading coils or linear loading.   
> The comments to this idea was that it wouldn't work due to  
> impedance problems.  It would seem that if this loading might work  
> to enable shortening the existing monster yagi that it ought to  
> work for adding 80/40 to the existing full size monster. ( or to a  
> 2 element version)

How about loading the boom as a shortened dipole for 40/80m in a 3  
element arrangement? You'd switch the DE out, and short the reflector  
and director to the boom and adjust to achieve resonance.

It would probably be a complex switching arrangement, but certainly  
possible.


Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901