interval signal

noun

1. a characteristic snatch of music, chimes, etc, transmitted as an identifying signal by a radio station between programme items

Example Sentences

The Lincolnshire Poacher was so named because of two bars from an English folk song of that name being used as an "interval signal".

From BBC

This is a clock which ticks seconds, known officially as "The Interval Signal."

From Time Magazine Archive

After each word the "Interval" signal is made.

From Project Gutenberg