Broadcast groups, including three major television networks, have asked the Federal Communications Commission to reconsider its broadened standard for regulating indecency over the airwaves.

In a petition filed with the FCC, the groups said the standard is "vague and overbroad" and the agency has given broadcasters "no meaningful guidance as to what constitutes indecency under that standard."

Joining in the action are Capital Cities-ABC Inc., CBS Inc., National Broadcasting Co. Inc., National Public Radio, Public Broadcasting Service, The New York Times Co., Post-Newsweek Stations Inc. and eight other groups and companies.

In a separate filing, the National Association of Broadcasters asked the FCC to clarify its decision, saying the new standard "has caused great confusion for many in the broadcasting industry."

The FCC warned broadcasters in its April 16 decision that it would no longer limit its definition of indecency to repeated use of comedian George Carlin's "seven dirty words," the subject of a 1978 Supreme Court decision.

The agency said it would impose the definition embodied in the court decision, which includes language or material describing sexual or excretory activities or organs "in terms patently offensive as measured by contemporary community standards for the broadcast medium." It also said broadcasters could no longer avoid FCC action by airing indecent material after 10 p.m.

James McKinney, FCC mass media bureau chief, said the commission "will have to address all the arguments" the petitioners raised in their filings this week. But, he added, "that does not mean it {the standard} will be changed."

The petition seeking reconsideration does not contest the FCC's authority to regulate indecency on the airwaves, but said the new standard violates the First Amendment and does not serve the public interest.

The groups said the commission should adopt a system that "defers to reasonable, good faith judgments of licensees who decide to broadcast material that might be found to be indecent within the meaning of the commission's definition."