NAB – The National Association of Broadcasters, which is a trade group for radio and television license holders.
NAL – A Notice of Apparent Liability and Order notice is issued by the Federal Communications Commission (FCC) when it finds a station or radio company liable for a fine under legislated laws or agency regulations. The station or company issued the NAL is permitted 30 days either to pay the proposed fine or to respond in writing.
Narrator – The individual who announces during the course of a broadcast program.
NBC – National Broadcasting Company.
NCS – Nielsen Coverage Study, used in radio and TV ratings.