Hiding Channels that aren't received?

Ok, got the new Bolt all hooked up. No cable, just internet on a CAT5 and an OTA HD antenna. Had the unit search for OTA channels and a bunch.

Don't know why but a few channels that end up listed on the 'Guide' have no signal. I figured no prob, I'll go to Setup and UNCHECK the channels I don't get and not be bothered with them again. The only problem is that they are not checked! I can't get rid of them.

Is there another way I can map out channels I don't get so I don't have see...

Hiding Channels that aren't received?

Hiding Channels that aren't received?