[TowerTalk] stacking monobanders

David Gilbert xdavid at cis-broadband.com
Tue Nov 28 17:33:46 EST 2006


Doug,

Anecdotal results from anywhere are irrelevant ... that was my point.  I 
don't trust software analyses implicitly, but I trust them more than 
opinions that aren't backed by direct comparison of some sort (like an A 
vs B test of two antennas at the same height at the same time).

Yup ... well, close anyway.  I used a fixed 2 element 40m wire yagi at 
70 feet for a while.  It worked great and I had a lot of fun with it.  
It would have worked even better at 90 feet, and it would have worked a 
whole lot worse at 45 feet like the original message from NY6DX discussed.

Dave  AB7E



Doug Renwick wrote:
> Dave,
>
> Have you ever operated 40m from the northern latitudes?
> Anecdotal results from a QTH in Arizona are irrelevant.
> Have you ever used a 2L 40m beam at 60 feet?
>
> Doug/VA5DX
>
>
>
> I disagree with your disagreement ... hi.
>
> Per my earlier message, there is 2db difference for a 2 element 40m yagi
>
> at 60 feet versus 45 feet.  That's about the same as the difference 
> between a 2 element and a 3 element yagi.  What I didn't mention before 
> is that having a yagi too low also degrades the azimuth pattern and 
> loses a lot of QRM rejection.
>
> No offense meant, but anecdotal results don't help in making good 
> antenna decisions.  I've worked Bouvet with a short 40m vertical and 100
>
> watts, and I've worked FR5 on 20m with 5 watts to a low vertical loop.  
> Neither would be my preference for antennas.  A QTH in VE5 might make my
>
> wishlist for generating a pileup during a contest, though ;)
>
> 73,
> Dave  AB7E
>
>   
>
>   
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