Topband: Base Loaded 160 Meter Vertical Vs. Helically Wound Vertical.

[Petr Ourednik]

Bob,

I am not guru but big losses provided by base loading coils are
unwanted. 
If loading coils then I prefer to put it on the top of the vertical
using it together with top hat > like Rob, VK3ZL used for several years.
The question is if the performance/efficiency will be better if the
helical design will be used instead of it. (K6MM or so)

TB friend > am I right?

73 - Petr, OK1RP
 

On Wed, 14 Oct 2009 15:49:22 -0700, "Chortek, Robert L"
<Robert.Chortek at berliner.com> said:
> Hello Fellow Top Banders,
>  
> Does anyone have an opinion as to which of two antennas would be more
> efficient, assuming the same ground system (8 elevated radials) :
>  
> 1.    60  Foot Base Loaded Tapered Aluminum Vertical (3" - 3/4") with a
> base loading coil (Air Core/8" in diameter) made of 1/4" copper tubing
> with turns spaced about 1/4" apart; or,
>  
> 2.    A helically wound vertical, a la the recent QST article?
>  
> Any thoughts would be appreciated.
>  
> 73,
>  
> Bob/AA6VB
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