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...the lower the frequency the less likely it is to be attenuated by structures such as wood and roof shingles and being receivable beyond the horizon...
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Generally true.
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...digital reception is nearly all about S/N...
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Though the symptoms appear quite different, the same is true of analog signal transmission as well. But again, true.
The further you can get the antenna away from other metal and power lines in particular, the better.
The article you've cited does speak of VSWR problems, but correctly points out that the problem is with small antennas that lack intentional design support for the low VHF channels. You should expect acceptable VSWR if using an antenna designed to operate in the low VHF band. The Phillips SDV7700K should have an acceptable VSWR in all three bands.
Of all the factors that help provide reliable reception, antenna gain and avoiding reception of noise/interference are at the top of my list.