[CQ-Contest] HFTA, PRN files

[David Gilbert]

The PRN files for HFTA are an extremely simple text file list of two 
columns of paired numbers.  The number in the first column is the 
distance from the antenna, and the number in the second column is the 
terrain height.  You can view ... and edit with any word processor ... 
any PRN file anyway you want to.  The distance numbers don't need to be 
equally spaced since HTFA simply draws a straight line between data 
points anyway.  The only requirement is that you use the same units for 
the data as you do for the height of the antenna.

I generated my PRN files manually by simply reading the distance and 
terrain height numbers off a topo program I had.  You can do the same 
from Google Earth.  It's a bit tedious that way but it allows you to 
apply whatever granularity you want to the data points, extend the 
distance out as far as you want, and do sensitivity analyses for 
different heights at different distances.

Open any PRN file with Wordpad or similar and you'll see what I mean.

73,
Dave   AB7E



On 1/3/2018 2:11 PM, sq7d wrote:
> Hallo
>
> HFTA software uses PRN elevation statistic files to display correlation of that statistic with antenna gain disturbed by near terrain profile. That PRN file is generated by the OH6BG Elevation-Angle Analyzer (EAA). EAA needs data from VOACAP software. If somebody here is familiar with VOACAP and EAA programs please mail me in case of generate PRN files for SP on most interesting dx/contest directions (US, JA, AF, AS ect).
>
> Thanks
>
> Matt SQ7D/SN7D
> _______________________________________________
> CQ-Contest mailing list
> CQ-Contest at contesting.com
> http://lists.contesting.com/mailman/listinfo/cq-contest
>