lowrider57
Carts were clunky, but the later generation of tape decks used to rec/playback were first-rate. When making a promo or any recording, you would hit a button and a cue tone would be recorded into the tape.Yup! The best cart machines had very high SQ. Carts also used a "tertiary" cue tone that could trigger a flashing light (very helpful on Top 40 stations to mark the vocal post or the approaching end of the track) or to trigger another machine.