WASHINGTON (AP) – Federal regulators continued their crackdown on indecency Thursday, issuing a fine for a broadcast of the Howard Stern radio show and ruling that an expletive uttered by rock singer Bono on NBC violated broadcast standards.

The Federal Communications Commission proposed fining Infinity Broadcasting the maximum $27,500 for a Stern show broadcast on WKRK-FM in Detroit.

The FCC also overruled its staff and said that Bono’s expletive during the 2003 Golden Globe Awards program was indecent and profane, but issued no fine.

FCC Chairman Michael Powell had asked his fellow commissioners to overturn the FCC enforcement bureau’s finding.

The FCC also proposed fining a subsidiary of Clear Channel Communications $55,000 for a broadcast on two Florida radio stations where the host conducted an interview with a couple allegedly having sex.

The fines are the latest in a stepped-up campaign by the FCC to crack down on indecency.

Critics have said the commission failed to aggressively enforce rules, leading to a coarsening of the airwaves.

Federal law bars radio stations and over-the-air television channels from airing references to sexual and excretory functions between 6 a.m. and 10 p.m., when children may be tuning in.

The rules do not apply to cable and satellite channels or satellite radio.

AP-ES-03-18-04 1810EST