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UI-View Bashing (was Re: APRS RF DX? (Was RE: [aprssig] APRS in Atlanta - flooding the network))

Robert Bruninga bruninga at usna.edu
Fri Oct 14 16:23:01 UTC 2005

>>> kb8uih at sbcglobal.net 10/13/05 9:47 PM >>>
>I use WinAPRS and the way the information has to be
>entered doesn't even give the user the chance to enter
>exact information to calculate a correct PHG. 

PHG is relative.  The difference between 20 and 25' is 
insignificant for the purpose of PHG.  Is your
25' a "good" 25 feet?  then make it 40.  Is it a "poor"
25' then make it 20.  The difference is small relative
to someone at 80', 160', 320', 640' etc.  Remember
that you have to basically DOUBLE your height to
make even 1-S-unit difference.  

> Myantenna is about 25' high and the only close entry I
>can make is for 20'.  No entry between 20 and 50 feet
>can be entered for my situation.  If my antenna was at
>any heigth of 21 through 49 feet, I could enter 20 or
>50 but not the exact entry for 35' for example.  I am
>not sure about entries for higher antenna mounting.

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