[BC] An Offer

Richard Fry rfry at adams.net
Sun Feb 19 19:24:56 CST 2012


A few days ago I installed software which accesses the Internet to download 
terrain elevation data and map data for most areas of the Earth, and then 
calculates the VHF/UHF field intensities for defined parameters over a 
specified area near the Earth, using the Longley-Rice algorithm.

The link below shows an example of this output calculation for a fictitious 
FM station near Springfield, Illinois with 50 kW ERP from 150m AGL to a 
receive antenna located at 2m AGL in the western sector from the tx site.

This software can show the L-R field in dBµV/m for the defined conditions 
for any location in the defined coverage area.

I'm still getting up to speed with this software, but if anyone wants to 
send me some specifics for a licensed analog FM station (FCC call letters 
and receive city or receive location lat/lon of interest), I'll respond as I 
can -- given the number of requests.

NOTE: The legal liability for all use of the information provided by this 
offer solely belongs to the requester of that information.

http://i62.photobucket.com/albums/h85/rfry-100/CoveragePlotExample.jpg

RF 



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