FORT LAUDERDALE, Fla. (AP) _ The arrest of two disc jockeys on drug and sex charges reportedly has led to an investigation of the possibility a homosexual ring preying on teen-agers has operated out of several Florida radio stations.

Detectives in Hollywood and Plantation are checking reports that disc jockeys used personal appearances for their stations to pick up boys for sex, the Fort Lauderdale News and Sun-Sentinel reported Sunday.

The investigation was sparked by the November arrests of Bill Tanner on drug charges and G. Michael McKay on charges of sodomizing a boy he allegedly had drugged. Both men pleaded innocent and have since left WPOW-FM, the top- rated South Florida teen-oriented dance music station.

The investigation has since widened to include other personnel at stations in the area, detectives said.

''This is a very big investigation. These guys worked at many other stations and know other station personnel. We are running down all leads,'' Hollywood Police Detective Curtiss Navarro said.

More than 20 people have been questioned. Police have combed station personnel records to establish relationships between various broadcasters, said Greg Reed, general manager of WPOW.

The arrests came after a boy told Hollywood police he was present at a homosexual orgy at McKay's home in September. The boy said Tanner also was present.

At least one other boy told detectives of sex parties at McKay's, police said.

McKay, 40, whose real name is Gary Hopfmann, was charged Nov. 26 with sexual battery and indecent assault on an incapacitated victim.

A follow-up investigation prompted a raid on Tanner's Plantation home. Tanner, 47, was arrested on charges of possession of LSD, cocaine and marijuana. Last week, police returned to his home and confiscated photographs and video tapes, the newspaper reported.

12-23-91 0938EST