The low dial position brought a little hiss with the signal, and may have been more vulnerable to electrical buzzing. But it got out a long long way -- to Cleveland and almost to Columbus. Now, I'm guessing it's just Windsor and a few miles across the river - no more coverage to Ann Arbor, Toledo, Sandusky (MI and OH), etc. Quel dommage. Trop provencal, bien sur.
1550 is a 10kw Class A, but it's directional towards the north to protect another Class A in Mexico. Back when CBE was on 1550, I could tune in to both that and CBEF on 540 in Bay City. Despite being 2.5kw daytime, CBEF came in very good in either direction; however, while reception of CBE on 1550 was good towards the north and east, the reception was quite staticky in Ann Arbor and non-existant in Toledo. (Don't know how it is in places like Lansing and Grand Rapids.)
The CBC also had a construction permit for a 2,400 watt nested repeater on 105.5 in Windsor which was authorized to simulcast CBEF 540. It is unknown if this is still in the cards now that CBEF has moved to 1550. The cp for this facility expired this past May and I have not heard about any extension being applied for or granted.
The repeater on 105.5 began broadcasting this past April.