Two antennas aimed in different directions with an A/B switch should give good results. If your TV tuner can not add a channel after a scan, it might be necessary to rescan after switching antennas.
As an alternative with two antennas, you can connect the main antenna to the antenna input of the TV and connect the second antenna to a separate tuner like the Channel Master 7003, with its output connected to the aux input of the TV.
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