Thanks for the images for signal strength. Either the tuner in the Samsung is bad on VHF-High CBS and ABC channels or your antenna isn't good for those channels. You will need to do some experiments to find out.
Can you borrow a TV to see if there is a problem with your TV?
Can you insert an attenuator between the antenna and the TV to see if it is weak signal or overload?
The problem might be overload from very strong local FM signals that interfere with the reception of CBS and ABC. Are you willing to try a filter to help with that?
If it is a weak signal from your antenna because it isn't good enough for CBS and ABC are you willing to try another antenna for CBS and ABC with no guarantee that it will help?
Last edited by rabbit73; 7-Oct-2015 at 7:25 PM.
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