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Jer,
If you send me your GPS coordinates via a private message, I'll look at your specific circumstances.
I've found that, when using a street address to generate a radar plot, the results are sometimes either ambiguous or sometimes flat out wrong due to a failure in Google's address look-up. I've also found that using only a radar plot in mountainous terrain is usually inadequate for the toughest locations. I prefer to include details that are not available from the plot.
Keep in that the TVFool analysis, while the best tool available, is only a mathematical "best estimate". I've found it to be pretty accurate for LOS signals, but 1- and 2-edge estimates have varied by as much as 10 dB in several instances when I've actually field tested.
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