Kirby sold it to Infinity Radio in 1976, who changed it to Top-40 "Y-103."

KRTH was sold to Infinity Radio in 1994.

Infinity Radio on play.

CBS later merged with Infinity Radio, keeping the Infinity name for its radio division.

In December 2005, Infinity Radio officially became CBS Radio in anticipation of the CBS/Viacom split up.

Carl Folta, a company spokesman, said both men were fully behind Mr. Sykes's appointment to run Infinity Radio.

Infinity Radio, with more than 180 stations, accounted for 28 percent of Viacom's $5.4 billion of cash flow last year.

The station was sold to Infinity Radio in 1993, then passed on to CBS Radio in 1997.

Before working at Citadel, he spent 16 years as CEO of Infinity Radio, owned by Viacom.

Stern worked under Karmazin at Infinity Radio and the two appeared to always have a great deal of mutual respect.