ABC American Broadcasting Company; network.
AC Adult Contemporary format.
Account executive Station or agency salesperson.
Actives Listeners who call radio stations to make requests and comments or in response to contests and promotions.
Actuality Actual recording of news event or person(s) involved.
ADI Area of Dominant Influence; Arbitron measurement area.
Adjacencies Commercials strategically placed next to a feature.
Ad lib Improvisation; unrehearsed and spontaneous comments.
Affidavit Statement attesting to the airing of a spot schedule.
AFTRA American Federation of Television and Radio Artists; union composed of broadcast performers: announcers, deejays, and newscasters.
Aircheck Tape of live broadcast.
AM Amplitude modulation; ...