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Well, let's put it this way: If the antenna was bad, you'd be missing many more stations besides KCBS. Your antenna was built by Winegard (they call it the Square Shooter), and it has a good reputation for UHF reception. KCBS-DT actually broadcasts on channel 43 and is at maximum power, 1,000
kW, so it's got to be related to antenna location at your end. Repositioning sounds like a good idea notwithstanding the pitfall you mentioned, but first I need to ask: Where is the antenna, indoors our outdoors? How and where is it mounted? I presume you're running a coax downlead from the antenna to a splitter and then two cables from the splitter to each TV. Is that right?
At less than 10 miles out, you were wise not to put an amplifier on the antenna, and it's still not a good idea. Most amplifiers would overload that close to the transmitters.
