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My first suspicion is that the AP4700 is overloaded. By turning away from Mt. Wilson you may be reducing the signal strength enough to get the AP4700 out of an overloaded condition. But now you are also aiming the antenna into some of the stronger multipath...
To test this theory, bypass the preamp (the mast mounted unit and the power insertion block) and any splitters using a known good coax directly from the antenna to one tuner that has signal metering. Now, starting with the antenna pointing straight at Mt Wilson, be sure to fine tune the aim of the antenna. Do you get a better signal?
I'm not convinced you need an amplifier at all. But if you do, it needs to be able to accommodate a large number of strong signals. If you have good signal from the antenna when feeding only one tuner and then loose some weaker signals after reinstalling the splitter, I'll be happy to suggest a high-input preamp or DA.
If you don't get a reliable signal at the antenna, an amplifier is not going to 'clean up' the poor signal. We would need to consider whether or not the existing antenna is damaged (another explanation for the aim point being displaced to the right of bore-sight), or do you need to consider a narrow beam-width antenna capable of rejecting multipath.
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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Last edited by GroundUrMast; 3-Apr-2012 at 6:29 AM.
Reason: Grammar, formatting & bad antenna 'what-if'
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