Answer: stationbreak

AnswerCrossword Clue
STATIONBREAKBroadcast interruption
STATIONBREAKTime for call letters
STATIONBREAKProgram interruption
STATIONBREAKSpot for a commercial
STATIONBREAKTV intermission
STATIONBREAKTime out for a message.
STATIONBREAKCommercial, usually.
STATIONBREAKIt might include the line "You're listening to WABC"