Infinity buys KRTH for record $110 million. (Infinity Broadcasting Corp.) (Brief Article)

Group owner will now have duopolies in L.A., Chicago, Boston

Infinity Broadcasting last week cemented its place as the boldest buyer of the new duopoly era, announcing a deal to buy KRTH(FM) Los Angeles from Beasley Broadcast Group for $110 million - by far the most ever paid for a radio station.

While the price stunned industry observers, most agreed that Infinity was getting an unusually valuable station in a strong market. Once one of the jewels of the RKO General group, KRTH has a strong signal and is the market's leading oldies station. Infinity said the station produces cash flow of $11 million on annual billings of roughly $24 million, making the deal a …