WZZO has an effective radiated power (ERP) of 30,000 watts, covering the Lehigh Valley metropolitan region of Pennsylvania and New Jersey.

At that time WGPA-FM used a sub-carrier to broadcast instrumental beautiful music from reel-to-reel tapes for playing over paging systems inside retail businesses.

The original broadcast studios were at 428 Brodhead Avenue, which now serves as a Lehigh University building in Bethlehem.

On February 24, 2019, WZZO's Facebook page announced that morning host "The Bearman" had died unexpectedly.

In 2008, the Lehigh Valley IronPigs minor league baseball team began broadcasting their games on WZZO.