[TowerTalk] Site Elevation and TOA

[Pete Smith N4ZR]

You cn see the truth of this quite readily, just by eyeballing the 
terrain profile and looking at the notches or enhancements in the pattern.

73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

On 6/18/2014 7:31 AM, Bill via TowerTalk wrote:
> In the past N6BV has been kind enough to supply me the "numbers"  for my
> QTH using his wizardry to generate them in a few minutes and then ship me  the
> files.
>   
> His files went up to about 14000 feet, and his reasoning was beyond  that
> the effects are minimal.  I would imagine this is true except in  extreme
> cases.
>   
> I strongly recommend EVERYONE who is contemplating putting up a  tower
> (except those who live on a table top terrain)  do the HFTA  thing.
>   
> Even here in fairly flat FL, where my dropoff to the NE is about 95  feet
> over a 1000 ft distance, the difference in takeoff angle compared  to flat
> ground is significant.   My terrain at KH6 was  such that it precluded me from
> putting up tribanders higher than around 90-95  feet, even though they were
> mounted on a 150 foot tower.  Who would have  guessed anything higher than
> 95 feet would not have worked as well on 20 on an  8000 mile path to EU?
> Thanks to HFTA, I knew.
>   
> I have used Dean's program on both of my stations and if the time  ever
> comes to build another, I'll do it again.
>   
> Bill K4XS/KH7XS
>   
>   
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