The story of WSHE-FM (Now WMIB-FM) in Fort Lauderdale is a lengthy one, kinda like the current WSHE-FM 100.3 here in Chicago, besides different ownership of the 2 stations.

I'm not sure how it works, but I have to think Hubbard Radio had to pay a certain amount of money to the owners of 103.5 FM in Fort Lauderdale to get the green light to use the WSHE call letters here.

As for the other WSHE in Fort Lauderdale...
https://en.wikipedia.org/wiki/WMIB