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Originally Posted by MichiganMatt
Timgr, I should have added that the construction of my house is 2x4 with Vinyl on sides above the 1st story. The roof is builder standard asphalt shingles. There is no insulation on the roof / inside walls of attic. There is house wrap underneath the vinyl but it's just the Lowes plastic type.
As for the size, there is one section of the attic that is huge, I can stand up in it and there are no vertical supports in that section, it's almost like an extra room up there in that space. I figured the CIII was really a long shot, but just dreaming.
I have money in the budget for VHF antenna so I would probably get 2 Antennacraft Y5713 and put one on the top of each panel.
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Doesn't work that way. The DB8e can splay the panels and pick up two directions
at lower sensitivity but it's designed so that the signals from the two panels will combine without destructive interference. You can't do that with two yagis, or two dipoles like the add-on kit. You can
stack yagis (google "stacked yagi antennas") but they must point in the same direction and the distance between them is more-or-less fixed. If you need more poop than the Y5713, get the Y10713 instead.
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Take a look at the attached image I just made. Is that how I could connect them with a 2 way combiner? CHANNEL PLUS 2512 DC + IR Passing 2-Way Splitter/Combiner (Just found it on Amazon as a 'also bought with Antennacraft)
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(pic won't embed)
http://s15.postimg.org/l6h3zxqnv/Untitled.png
Don't do that.
The DB8e has its own combiner. Use a single VHF high antenna and combine it with the DB8e signal after the two panels have been combined. Use a UVSJ or a preamp designed for combining VHF and UHF signals. These components contain filters on the respective inputs that eliminate the unwanted out-of-band signals. You can combine pure UHF and pure VHF into one stream and they will not interfere, but you cannot naively combine 2 UHF or 2 VHF streams.
UVSJ:
http://www.solidsignal.com/pview.asp?p=uvsj
Preamp (example):
http://www.amazon.com/RCA-TVPRAMP1R-.../dp/B003P92D9Y
Here is my rooftop config with a DB8e and a Y10713. The Antennacraft 10G221 preamp on the mast combines the signal from both panels of the DB8e and the signal from the Y10713.
