(Sadly) I've never once heard a Wellington County fire call appear on the Milton tower even when Puslinch Fire was on the 401 just west of Guelph Line. In my reception range at least both the Puslinch and Brisbane towers seem to carry Puslinch, Fergus, Elora, Rockwood, Erin and Hillsburgh calls much of the time, then a few days later tower coverage of the same station calls seems to have geographically fragmented. I've heard Drayton and Moorefield calls on those same towers, but far less frequently. Wish I was in-range of the Fergus site to know how it handles the same runs.