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@dmfdmf, Thanks for the observation & question...
I think teleview's efforts to optimize the installation of the existing 751 were a sound and reasonable approach.
By post 9 of this thread, the OP had concluded they wanted to consider another antenna. Given that the two H-VHF signals (RCH-8 & RCH-10) are roughly 90° off the main beam, I fall back on my experience with multipath problems and tend toward a solution that I believe would offer a higher probability of reliable reception. They already own the 751, so rather than tossing it aside, I offered a solution that is similar to that used by may other San Diego viewers. (I believe that a larger, more directional combo antenna would further reduce the chances of reliable reception from the side.)
As I look at the signals available from the LA direction, the distance makes me fearful of variable atmospheric conditions producing a form of multipath interference. Also, many of the distant signals are flagged with co-channel adjacent channel warnings. As a result, I chose to focus my attention on the local signals from the San Diego market. (If in the same situation, I'd opt to build a separate LA receiving system, using a big DX antenna or combination.)
Part of my thinking process includes the idea that I don't want to recommend a solution that 'almost' gets the job done... nor do I want to waste the OP's money... Again, it's a judgement call, and it's rare that there is only one workable solution.
Best regards
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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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