"Reconfiguring the tuner" on my Sony TV means simply switching between Cable mode (QAM channels) and Antenna mode (OTA channels). This takes a couple of quick button pushes via remote control. Scans for each mode are saved so there is no reason to rescan when switching between the modes. I have my 3 local OTA channels saved in Antenna mode. And my many QAM cable channels are saved in Cable mode. I do have to rescan the QAM channels regularly since they change.
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