I have a crapie Coby TV in my kitchen. It's connected to the cable splitter via a WHITE coaxial cable. The picture is terrible - "snowy", like in the "good old days" of TV antennas when the station was too far away and the signal level low. It is an analog signal, by the way (not HD). So I moved the TV into the den, where there is a BLACK cable connected to the same splitter, of about the same length as the white cable. Guess what - magically, the picture is vastly improved when using the BLACK cable!
So does this "prove" that a black colored cable is superior to a WHITE one? They are both "75 Ohm" cable, by the way.
Any reasonable person (even non engineers) would claim that there is insufficent information to answer that question. But I can claim that "see, black cable is better". After all, it was in my "experiment". And the difference is very obvious.
For what it's worth, it's not that terribly unusual for a company to spend $100K or more for a test instrument. A lot of high accuracy, very high frequency (26 GHz and above) test equipment will cost over 100K (new). Rhode and Swartz makes very high quality test instrumentation, but they are ungodly expensive.
Edits: 04/24/12
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