gbswiercz, according to your TV Fool results, all stations are blocked by at least 2 obstructions in the terrain (2edge). All but 6 channels in the list suffer from co-channel interference, of another station broadcasting on the same frequency. You only have one station with a noise margin (signal strength compared to interference), that has a value above zero (0.7).
A pre-amp would seem to be a waste of money for you, as it's only to amplify usable signals to survive the transport through your cables/splitters. The signal levels you are getting at you location are extremely weak.
I tried changing your antenna height, but it didn't improve things much, except for the stations you're already getting.
I'm not familiar with the gain of your antenna, or whether it even supports UHF, but CFTO 54 & TVO 42 don't seem out of the question. CFTO 54 is only slightly weaker at your location than CKVR CH3, except it's UHF. If you get CH 5 though, which should be almost never, according to your TV fool report........
Last edited by stampeder; 2009-11-18 at 12:58 PM.