I realize the latest Nielsen PPM ratings will be released shortly, 6+, however, I would like to go down radio memory lane.

Can anyone recall a Chicago AM or FM station which were in their format for the shortest time?

Both Jeremy Andrews and WYTZZ95FM are both radio encyclopedias.

Minor format tweaks don't count.

If I had to take a guess, I think 94.7 would take the crown as it were.