pirate radio/TV (station)
From Longman Dictionary of Contemporary Englishpirate radio/TV (station)pirate radio/TV (station)AMTillegal radio or television broadcasts, or the station sending them out → pirateExamples from the Corpuspirate radio/TV (station)• That's our very own pirate radio.• Unfortunately Phil had unwittingly chosen a bad time to clash with the pirate radio vessel.