Last time I was east of Ottawa last year is where I had heard PTAC heard more so.
Ever since the move to fleetnet though, I've never been able to hear PTAC out by Renfrew, however back in the day when PTAC was always used, I had no problem hearing it up this way.
Well I can finally confirm the PTAC still active. I heard it this morning with the PL 118.8 while conditions were favourable before 8am. I wonder where the repeater is for this? Certainly not as strong as what it used to be many years ago.