At 02:18 PM 6/22/2005, Steve London wrote:
>Many of you have used the elevation angle statistics files included in the
>new
>ARRL Antenna Book CD-ROM. When used in conjunction with antenna and terrain
>modeling software, they give you a fair idea of whether an antenna system is
>reasonably matched to the predicted arrival angles of stations in the
>target area.
>
>One characteristic of the arrival angle statistics in the Antenna Book is
>that
>the statistics are averaged over all 12 months, and all 11 years of the
>sunspot
>cycle. It stands to reason that the expected arrival angles may vary
>considerably with the height and density of the E- and F-layers.
>
>I have written software that can generate customized elevation angle
>statistics,
>using VOACAP, based on transmitter and receiver location, sunspot number and
>month. The output of the software is an elevation angle statistics file
>that is
>compatible with HFTA.
>
>A beta-version of the software can be downloaded from
>http://n2ic.topcities.com
>. Click on the "VOACAP Arrival Angles" button at the top of the page.
>
>Please feel free to send comments and suggestions to n2ic@arrl.net .
>
>73,
>Steve, N2IC
Nifty idea, but the website is down (says temporarily suspended). If you
need a place to host your software download let me know off list.
Jim, W6RMK
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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