Join Date: Jan 2010
Location: Location, Location
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If you're receiving a channel 4.1, I'm guessing that your channel 5.1 is coming from a different city than the others. Nowadays the numbers are purely symbolic, but back when they were assigned to actual frequencies, the FCC wouldn't assign adjacent frequencies in the same city.
Directional antennas aren't perfect, and can have some very strong side lobes. That's probably how you received signals form multiple locations. Since it's a vacation place, you probably need to re-aim the antenna. Chances are that weather has turned it enough so it's no longer on its sweet spot.
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