Did you use the preamp with the 751?
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What has me baffled is that before I mounted the antenna, I had it resting upright in the TVroom at the top of the house, indoors pointed at about 100 degrees (resting on the wall, pointed slightly down) and I was getting a pretty good signal.
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Pretty good signal of what?
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I still cannot understand why I got a pretty good signal inside.
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That is odd, but there could be a reason, as of now unknown. There could be local noise interference that is stronger at the roof location; the noise level is higher on VHF which reduces the SNR (HDHR SQ).
Are there any trees in the signal path? Trees kill TV signals.
As the signals come over the peak, they are scattered, which presents an uneven wave front to the antenna. You end up with hot spots and cold spots. Some installers "walk the roof" with a temporary antenna before mounting it. Often the best location for the antenna isn't the most convenient location.
