[Towertalk] 40M Dipole Height.

[n4kg@juno.com]

Do you have an HF Yagi on top of your tower?

Your BEST bet for 40M would be a rotary dipole of some sort,
such as a CC D40 on the mast above a High Band Yagi, or,
Match the BOOM of a high band Yagi as a rotary dipole on 40M.

I have posted my Boom Matching technique several times here 
on TowerTalk and it has also been published in the NCJ 
(National Contest Journal).  If you are interested, I can forward
a copy.

Tom  N4KG


On Fri, 21 Jun 2002 19:02:55 +0100 "Robert Webb" <G0urr@btopenworld.com>
writes:
> Hello everyone, a quickie for you. I have a 60ft tower with a 1/4 
> wave 40m
> coax fed dipole attached at the 55ft point. Due to land 
> restrictions, the
> two ends slope down sharply and the two ends are appx 40ft apart at 
> their
> lowest point. Would my radiated signal improve if i  lowered the 
> feedpont,
> therefore increasing the angle of the slope or is it better to keep 
> the
> feedpoint as high as possible. I just cannot work out or see in my 
> mind
> which would be the best option. Hope it all makes sense, and thanks 
> for
> youre time 73s
> Robert Webb
> G0URR
> 
> 
> 
> 
> 
> 
> 
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