CFTO seems to go up and down in strength at my location for no apparent reason. This goes back as long as I can remember. I’m sorry I didn’t take some actual signal level readings before. I didn’t realize that the problem I experience is not exclusive to me!! Right now, at 2:20 pm, Apr 20, 2016, the signal level at the TV input terminal is -71 Dbm. I’m going to track it now for a few days and compare. My “gut feel” is that this level is about 10 to 12 Db below normal at my location in the west end of Hamilton. My tuner says 80 to 88%. Normally it sits at 100%. Sometimes the signal drops so low that I have to switch to a separate 3 element yagi cut for ch 9 to get a stable enough signal to record OTA. At any rate, now I have a base level to compare. Also, I know the signal is down, as 1 of my 3 antennas that normally receives ch 9, has not produced a stable, decodable signal for the last week or so. BTW, I should be able to see the lights on the CN tower on a clear night at my location!