Former Boeing 747 pilot Eric Moody believes pirate radio DJs are underestimating the risk they pose.
Ofcom's head of investigations, Paul Mercer, told BBC News that pirate radio was not a victimless crime.
One of the criticisms levelled at pirate radio stations is that they are just in it for the money.
"I went from youth club to pirate radio to legal radio to mixtapes to singles to here, " he said.
The rape claim was also said to have been broadcast on a pirate radio station and put out on a community-based website.
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"It said 'everything happening here, Beatles, Stones, The Marquee Club and pirate radio - they need you, get your butt over here!'"
Last week, officers from the Metropolitan Police and officials from Ofcom pulled the plug on one alleged pirate radio station in north London.
Every morning, he has Radio 1 playing in the bedroom, Capital Radio in the kitchen and Choice or some pirate radio in the lounge.
When he first returned to England in 1967, he spent six months working for a pirate radio station on a ship in the North Sea.
However, one pirate radio DJ told the BBC that while pirate stations may have interfered with the emergency services in the past, it was now a rare occurrence.
But people who listen to pirate radio tend not to be concerned about the problem - which can also affect radio communications by emergency services and air traffic control.
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Walker joined BBC Radio 1 in 1969 having made his name on pirate station Radio Caroline, before moving to BBC Radio 2 in 1998.
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Peel began working for a radio station in Dallas in the 1960s, followed by a spell on pirate station Radio London, before moving to Radio 1 in 1967.
Unlike many of the other pirate-radio operators, who were in it mostly for money or adventure, Smedley saw his broadcasts as part of a wider moral crusade.
But Ofcom warns that pirate stations are starving legitimate radio stations of audiences, advertisers and money.
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Broadcasting legend Dave Cash began his radio career on the pirate ships in the North Sea where he presented the "Kenny and Cash Show" with Kenny Everett.
Technicians on the roof, examining a microwave link to a remote transmitter, also found a cable linking to a second alleged pirate station, that while not transmitting, contained radio equipment which officials also seized.
It wasn't long before he joined one of the many pirate ships broadcasting off the coast of England and thus began a radio career that has taken him across the country - including presenting on the legendary Radio Luxembourg and Radio Caroline.
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