Chicago's WBEZ-FM is studying ways to acquire a second frequency in the city, reports the Sun-Times.

Public radio engineers say that iBiquity Digital Corp. has improved its digital audio codec, reports BE Radio. Meanwhile, WGUC-FM in Cincinnati has gone digital.

KPCC-FM in Los Angeles and K-Mozart, a local commercial classical station, will promote each other on their airwaves, reports the Los Angeles Times.