Jen Brien gets WBZ (AM)'s overnight and Louise Morgan query

[Sid Schweiger]

"To capitalize on the reputation WFNX had at 101.7..these days some say call letters aren't important, but why did Greater get the calls WROR for 105.7?  Why did some stations here and elsewhere (Vermont) grab WMEX?"

Those changes were made in the days before PPM, which made call signs basically irrelevant when it came to measuring audience.  In the non-PPM markets, where recall and diary mentions still mean something, call signs are still important.