Y100 is the longest-running Top 40 station in both the United States and North America with the same call letters and nickname.

Y100 has been broadcasting continuously with various forms of contemporary hit music since it signed on August 3, 1973, at 6 am, with new call letters WLQY (the station was originally to be known as "Lucky 100".

The original line-up included Roby Yonge and John Emm in the mornings, Larry McKay in middays, future Power 96 jock Don "Cox On The Radio" Cox in afternoons, with Davey O'Donnell in nights, and Eric Rhoads on the overnights.

Several months after signing on, the call letters were changed from WLQY to WHYI following complaints from a crosstown competitor at what was 96.3 WMYQ.

In 1975, Y100 was the first station in South Florida to broadcast live during the world-famous street party known as Calle Ocho.

[citation needed] As program director and DJ, Bill Tanner hired on-air personalities including sports reporter John “Footy” Kross, newsman Jim Reihle, traffic reporter and the first "Captain Y" Glen Logan, the second "Captain Y" Mark Lipof, midday host Cramer Haas, Joanne "Jo The Rock 'N' Roll Madame" Meader, Jay Marks, Rick Eliott, Robert W. Walker, Don "Cox On The Radio" Cox, Tom Birch, Dave Dunaway, Banana Joe, Quincy McCoy, Gnarlie Charlie, Jade Alexander, Earl "The Pearl" Lewis, and overnight host Mark "Mark In The Dark" Shands.

Mark Shands served as music director during part of his time at Y100 and was a substitute newsman on Tanner's show.

Using a blend of parody songs, phony commercials, and impersonations of local and national celebrities and politicians.

Fox, Hersey, Mark "Captain Y" Lipof, John "Footy" Kross, and Mr. Mike Raffone led the morning show to its highest ratings ever.

On Monday, June 18, 2001, Footy paired up with afternoon DJ Kenny Walker to co-host "The Y100 Early Morning Show".

[2] In the spring of 2006, Footy and Froggy co-hosted the show with two afternoon and evening DJs - first Adam Bomb and then Michael Yo.