[TowerTalk] Re: Antenna Height yet again

[Rob Frohne]

> 
> >Second, I'd like to add my experiences to those of others.  My data has
> >not been collected scientifically, but comes from many hours operating
> >on the 20 meter band and gathering every thread of information on what
> 
> >My present methods of analysis tend to give preference to the long
> >paths, because there are no really active locals that I can compare
> >with.  I have been comparing with others in the Pacific Northwest
> >and note that on the long path, the antenna at 120 feet worked
> >about an S unit better than it does at 90 feet.  For the short path to 
> >Europe, it is about the same sometimes, and other times it seems to 
> >be worse, especially when the band is just opening or closing.
> >
> 
> I am confused - do you have the antennas at the same location 
> or diffrent ones?  When dealing with antenna heights you need to 
> take the local terrain into account because what works great 
> at your friends house where the land is flat might not be
> the height that works well at your hilltop (or hill bottom) location.

They aren't actually at the same location, but about 500 feet down
the street.  The basic terrain is the same; quite flat....  There
are a few differences in the powerlines and fences, but that is about
it.  However, it might make a difference.
> 
> >Anyone know of any scientific studies along these lines or of these
> >questions?
> 
> Get a copy of the most recent ARRL antenna book w/software - I think 
> it will get you started.
I suppose I'll have to do that.  It kind of bothers me though, 
because I have about 7 of them already, including two in the large
8.5" x 11" format.

Thanks for the notes!

Rob

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