The History of Pirate Radio: From Offshore Ships to Low-Power FM

Pirate radio means broadcasting without a licence, and its history runs from a ferry anchored off the English coast to a federal law signed in 2011. This guide tells both halves: the offshore ships that brought pop records to Britain, and the American micro-power stations whose fight helped create licensed low-power FM.

Records all day: Radio Caroline and the offshore ships

The best-known pirate began with Ronan O’Rahilly, whom the Offshore Radio Museum calls “the father of UK offshore radio.” He fitted out “the mv Fredericia, a former Danish ferry,” at his father’s port of Greenore. The ship “dropped anchor off Felixstowe on Good Friday,” and Radio Caroline went on air over Easter weekend 1964.

The format was the news. “The station played records all day, every day. No one else was doing that in the UK in 1964.”

After a July 1964 deal with Radio Atlanta, Caroline’s ship moved to the Irish Sea off the Isle of Man as Radio Caroline North, and Radio Atlanta became Caroline South. The Pirate Radio Hall of Fame’s history of O’Rahilly and Radio Caroline tells the story in detail.

Outlawed and still on air

In the museum’s words, “in August 1967 the British government legislated to outlaw the pirates. All the other stations closed down.” Caroline carried on from abroad until March 1968, when its ships were impounded for unpaid bills.

It came back from the Dutch coast at the end of 1972, and then “In 1974 the Dutch Government followed the British and passed legislation outlawing offshore radio.” The Ross Revenge “dropped anchor in the North Sea in August 1983,” and Caroline returned after 41 months of silence.

Radio Caroline closed down at sea for the last time on November 5, 1990. The museum notes that it “still exists as a licensed, legal broadcaster on land.”

Small transmitters in America

The American story turns on power levels. In 1978, the FCC’s own later order recalls, the Commission judged that 10-watt Class D stations used the band inefficiently. The Austin Chronicle adds that “In 1978, the FCC stopped issuing licenses to stations that operate at less than 100 watts,” which left “no license the stations could have applied for.”

In 1987 Mbanna Kantako, originally named DeWayne Readus, “began transmitting WTRA at a power of 4 watts from his apartment in a public housing development in Springfield,” Illinois, according to the University of Illinois Springfield archives. It later became Human Rights Radio, among other names.

Small FM transmitters also have quieter, legal uses, such as kit-built FM transmitters at headphone concerts.

Free Radio Berkeley in court

Stephen Dunifer, a radio engineer, ran Free Radio Berkeley, a 25-watt FM station that by one 1997 account reached “some eight square miles.” In 1993 the FCC fined him $20,000, which he refused to pay. In January 1995 federal Judge Claudia Wilken turned down the FCC’s request for an injunction, finding that the government had “failed to show a probability of success on the central issue raised by the defendant.”

That issue was “whether the FCC’s complete prohibition of micro-radio is constitutional.” The station broadcast openly on 104.1 FM for three and a half years. In June 1998 Wilken granted the injunction on a technicality: the station “had never applied for (and been denied) a license,” so it could not raise the constitutional defence.

Year	Event
1964	Radio Caroline goes on air from a ship off Felixstowe, Easter weekend
1967	Britain outlaws the offshore stations in August; Caroline carries on
1978	The FCC judges 10-watt Class D stations an inefficient use of the band
1987	Mbanna Kantako starts 4-watt WTRA in Springfield, Illinois
1993	The FCC fines Stephen Dunifer $20,000
1995	Judge Wilken refuses the FCC an injunction against Free Radio Berkeley
1998	Wilken grants the injunction in June
2000	The FCC creates low-power FM; Congress limits it in December
2011	Local Community Radio Act signed, January 4

The FCC opens a door: low-power FM

On January 20, 2000, the FCC adopted a Report and Order creating a low-power radio service. It authorised “two new classes of FM radio stations,” at a maximum of 100 watts and 10 watts, run on a noncommercial educational basis by local groups. A 100-watt station reaches about 3.5 miles.

The order is frank about who pushed for it: “Many individuals insist that without radio ‘pirates,’ LPFM would not have been created.” The compromise let a former unlicensed broadcaster apply only if it had stopped by February 26, 1999, or within 24 hours of an FCC warning.

The FCC’s 2000 Report and Order creating low-power FM sets all of this out.

Aspect	Low-power FM (from 2000)	Unlicensed (pirate) station
Who	Local noncommercial groups only	Anyone with a transmitter
Power	100 watts or 10 watts	From 4 watts (WTRA) to 25 watts (Free Radio Berkeley)
Reach	About 3.5 miles at 100 watts	A neighbourhood, some eight square miles in Berkeley
Legal status	Licensed	Illegal; past pirates barred from low-power licences

Congress narrows it, then reopens it

Late in 2000 Congress added a provision to an appropriations act requiring a further interference study. A Senate committee report later found that it “led to the elimination of at least 50 percent of the pending LPFM applications,” leaving “only one LPFM station licensed in the top 50 cities nationwide.” The Mitre study that followed took over two years, cost over $2 million and “confirmed the FCC’s initial findings.”

The Local Community Radio Act, signed on January 4, 2011, told the FCC to remove the third-adjacent distance rules. It kept one line from the pirate years: no low-power licence for an applicant who “has engaged in any manner in the unlicensed operation of any station.”

A theatre named Antenna

Antenna Theater took its name from the device. In a November 1985 profile, Robert Hurwitt reported that Chris Hardman “conceived of Antenna, he says, as an instrument for receiving information from the audience, transforming it and then transmitting that information back out.”

Its own radio work was small and local. In 1984 the company made Antenna’s Radio-Active Theater series on KPFA, a licensed listener-supported station. For Skin & Bones in 1995 it wrote: “Using our local radio system the audience follows a Marin County matron through the Marin Recycling Center.” Antenna’s devices, from Walkman to FM radio, are traced in the headphone theater history.

The parallel with pirate radio is the idea of radio as a local, personal medium rather than a mass one. No source links Antenna with any unlicensed broadcaster; the comparison is the Journal’s own. For radio as storytelling rather than protest, see the history of radio drama.

Frequently asked questions

For more, see Walkmanology and Antenna’s other new theater forms, Dial-A-Poem, John Giorno’s poetry by telephone, what makes a radio documentary, Pauline Oliveros and Deep Listening and Etienne Decroux and corporeal mime.