I spoke to CBC and TQS and you are absolutely right, they are broadcasting very low, TQS at 13kw + Mount Royal doesn't help, lol!
That is exactly the same one - 1508228.(actually didn't have to pay for it.) I'm not using a preamp, I went to DDO electronics and bought a cheap UHF/VHF amp installed it inside and I pick up everything except for cbc and tqs. 22.1 came in on this antenna but not on my previous bowtie antenna. No complaints here. (I'm on Ile Perrot(lowest part) if this helps. )
PS: They also mentioned that no new antennas can go on Mount Royal until the analog ones are removed.