That antenna, and other Chinese antennas like it, have wildly exaggerated claims of reception, and your cabin is at least 55 miles from the network transmitters of Duluth.
My suggestion would be to replace your antenna with a VHF-high-band plus UHF antenna mounted as high on your roof as is practical. A good choice would be the Winegard HD-7698, since you have 2 VHF channels that you will want to receive. You may also want to install a preamplifier like an AntennasDirect PA-18, as a preamplifier seems to make a big subjective improvement in weak signal quality.
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