Here's a link to your earlier thread:
http://forum.tvfool.com/showthread.php?t=16082
It's best to keep all your questions in a single thread so we can see what's been discussed earlier.
Here's a link to your TV Fool Report:
http://www.tvfool.com/?option=com_wr...e2cb74ea324603
And your set up: HD8200XL with CM7777 pre-amp aimed at Mt. Wilson (Los Angeles) in Etiwanda area.
CM3410 dist. amp in attic for a 5 room hookup.
Located in foothills behind Mt. Baldy, and experiencing signal loss and pixelation depending on time of day.
Using RCA rotator motor now to tweak.
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And you have mountain peaks between you and Mount Wilson. Time for some study. Be patient. Others will post.