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Old 13-Mar-2013, 4:47 AM   #12
GroundUrMast's Avatar
Join Date: Oct 2010
Location: Greater Seattle Area
Posts: 4,773
Compare the numbers, run a TVFR for 18' and another for 28'. Higher NM values would be an indication of improved reception. Also, if the path changes from 2-Edge to 1-Edge or LOS, you can expect improvement.

TV broadcasters do not typically reduce power at night. Propagation conditions do change though. If a distant signal makes it to your antenna, it can interfere with a local signal. There could also be more interference from electrical devises with everyone in the neighborhood home, turning on stuff.
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