FORT LAUDERDALE, Fla. (AP) _ Four police officers were fired after supervisors overheard them broadcasting vulgar conversations over citizens band radios while on duty, police say.

Using portable CBs they plugged into their cruisers, the officers used derogatory sexual language to describe a female sergeant, used racial slurs and talked about hiding their cars rather than patrolling, police said.

''After you get past some of the offensiveness and the disgust, their behavior shows there is a total immaturity of these officers,'' Police Chief Joe Gerwens said Monday. ''These are the people we entrust with the safety of the community.''

The Fraternal Order of Police will appeal the dismissals, said Frank DeRusso, president of the Fort Lauderdale chapter. He said the officers' conversations were private, and defended the content, saying they were venting job frustrations.

The men, who make at least $34,000 annually, are suspended without pay until Oct. 13, when their dismissals become effective.