It carries a mainstream urban radio format and is owned by iHeartMedia The studios and offices are on Presidential Boulevard in Bala Cynwyd.

WPBS was cross-promoted with the newspaper and featured an easy listening format, airing quarter hour sweeps of mostly instrumental cover versions of popular adult songs, as well as Broadway and Hollywood showtunes.

Program Director Jim Nettleton instituted a soft adult contemporary format mixed with a number of standards which had crossed over to the 1960s/1970s pop charts (e.g. Engelbert Humperdinck, Barbra Streisand, Andy Williams, etc.).

Two months later, co-owned WFIL switched to a more personality and information-leaning country station, while WUSL stuck with a more-music, limited chatter approach.

[4] LIN Broadcasting decided to target Philadelphia's growing African-American community with a new radio station, challenging the long-established leader in R&B music, WDAS-FM.

Later in 1983, the station began presenting its annual major concert event known as The POWER 99fm PowerHouse (not to be confused with the PBS educational series of the same name).

The show featured a cast of off-beat characters, all voiced by Sanborn, including wise-cracking horoscope reader "Horace, the Taurus" and fall down drunk blues singer "Lunchmeat Mumford".

Colby Colb started as an intern at the station and following the success of Radioactive went on to host nights (6–10pm), mornings with Wendy Williams and Dee Lee (The Dream Team).

Their success was short lived as Wendy Williams left in August 2001, to go back to New York City to do afternoons on WBLS.

It was also the home of Miss Jones in the Morning, Shamara – "The Midday Princess" and The Power 99FM's Hot Boyz with Poochman, Mikey Dredd and Uncle O at night.

The 2013 on air line up consisted of "The Rise N Grind Morning Show" with Mina SayWhat (former DJ of Sirius/XM's The Heat), and Mikey Dredd (former member of the Hot Boyz).