[ADTech]

Originally Posted by jrgagne99

The Longley-Rice plots from www.rabbitears.info indicate about a 100-foot shift in the reception morphology for WCAX, relative to WPTZ. The shift puts my house right on the edge of a WCAX deadzone.

You're assuming precision in the underlying input data that does not exist. The rabbitears.info calculations uses a much coarser elevation data set than does TVFool's input data, consequently, comparing the two results is not a heads-up comparison. It's somewhat akin to making a comparison in the video quality between a 1280P input source vs a VGA-resolution source on a UHD display and expecting 4K results.

I'm guessing this is a frequency effect, (473 MHz vs. 521 MHz) since the general reception pattern in the vicinity of my house is quite similar between each signal.

Absolutely.