Nueatit:

Thanks for the reply. I have a chimney mounted CM-4228. This feeds a Channel Master 4 way Distribution Amplifier (PCT-MA2-4P).  One of the splits in the Amplifier is capped.  Of the 3 remaining, 2 feed the HDHomeRun and the last feeds my LG Tv in the living room.

Other channels from CN Tower are perfect and have been so (with minor glitches) since 2008.

The discussion about changes to the CBC signal prompted the question. Would these changes possibly screw up the picture on some tuners, as well as the programming data?

The HD HomeRun on the CBC signal has been perfect, while the hockey game on the LG was unwatchable yesterday...