Quote:
Am I looking at 6 inches or 3 feet to find the "sweet" spot?
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According to hdtvprimer.com and posted in another thread by rabbit73 similar to #13 above:
"For UHF the strong and weak spots are often 5 to 20 feet apart. If you are in a neighborhood with overlapping fields, moving your antenna a few feet can make a huge difference in signal strength. The chimney might seem like the perfect site, but if the chimney is in a weak spot then the chimney is a mistake. To make matters worse, the pattern of strong and weak spots will be different for different frequencies."
http://www.hdtvprimer.com/ANTENNAS/siting.html
If I can find rabbit73's post of Signal Layering/Overlapping Fields I'll edit with link or perhaps he will chime in with it.
Hope this helps.....