"The new sponsor will get air time on all 66 of the radio stations that broadcast Red Sox baseball across New England as soon as the latter part of this season. And the number of stations may grow: The Red Sox and Entercom are laying plans to broadcast Sox games in several major areas outside New England that are home to large numbers of Red Sox fans, including Florida, Arizona, and California, Kahn said. Ultimately, she said, Entercom and the Sox would like to expand the Red Sox radio network to 100 stations."