Corbett’s Trivia: Fire Alarm Telegraph System



Glenn Corbett, PE, is the former assistant chief of the Waldwick (NJ) Fire Department, an assistant professor of fire science at John Jay College of Criminal Justice in New York City, and a technical editor for Fire Engineering. He recently served on the Federal Advisory Committee of the National Construction Safety Team and is a member of the Fire Code Advisory Council for New Jersey. He is the coauthor of the late Francis L. Brannigan’s Building Construction for the Fire Service, 4th Edition, editor of the upcoming Fire Engineering’s Handbook for Firefighter I and II, and an FDIC Executive Advisory Board member.



Q. In a fire alarm telegraph system, which signal was transmitted faster–the joker or the gong signal? Scroll down for the answer! 


A. The joker signal. It was transmitted manually by hand.

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