[Antennas] Elevated Vertical

Mel Vance icra at galaxynet.com
Mon Mar 21 21:21:07 EST 2005


> I am considering putting up a Butternut HB9 vertical. 
> I am thinking about mounting it atop a 40 or 50 foot
> mast with the radials fanned out around it.  Is there
> any advantage to getting this kind of height or am I
> better off to mount it closer to the ground?
> 
You will get an improvement on 10 and 12.

You should get an improvement on 15 and 17.

You may get improvement on 20.

You might get improvement on 30.

Do not think any other bands will show any change.

Any improvement assumes a good radial system (min 4) on each band...most likely should 
be at around 60geg (I think....an antenna book will give the best angle for a 50ohm match 
on a vertical).

While I do not think the lower bands will show any improvement, I also do not think it will 
hurt. Could see a small signal improvement...but less than an S unit....you will have to 
decide if it is worth the effort FOR YOU. There have been several antenna projects I have 
done after being told it would be a waste of time. Worked for me. That is what counts...does 
it work for you for the amount of effort required.

Mel
N7OKL



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