“Can you add channels manually? If the antenna is scanned in one direction and then turned, will it remember previous scans or overwrite?”
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You can use Auto Tuning in the LG 43 Inch Class 4K HDR Smart LED TV (42.5'' Diag), Model # 43UM6910PUA which will automatically search and remember channels that are available for viewing at the time that you search for the channels. Auto Tuning finds and adds only channels being broadcast. If the Antenna or Cable is not connected properly, channels are not added. You can also use the Manual Tuning which adjusts channels manually and saves the results. You can check the signal strength of digital broadcasts...^IFV
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