AVS Special Member
Join Date: Dec 2003
Location: stranded in Iowa
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many stbs have a SIGNAL button, or something similar - and then display a bar graph, or something similar to show signal strength. Different boxes by different companies have displays of differing usefulness - my Samsungs are slightly useful, but they have no numerical values, and the correspondence between the values shown and actual signal strength are subject to debate.
others have HD cards in their pcs; that is usually a lot better. Some hd tvs have signal meters, some don't.
Time of day can and does affect sd VHF signals; I'll defer to the experts on the forum re UHF, but one could assume it does - after all, at night, the sun and all of it's associated radiation is safely behind a big ball of dirt and water.
Denon DVP - everyone else loves it.