The problem is, satellites move. Its likely that at that time of day the satellites aren't directly lined up with your antenna.
Check this out; http://www.tiger-usa.com/satellite_animation.htm
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Type: Posts; User: mel
The problem is, satellites move. Its likely that at that time of day the satellites aren't directly lined up with your antenna.
Check this out; http://www.tiger-usa.com/satellite_animation.htm
...