Authorities search for those involved.

Da Streetz, a pirate hip-hop station based in Miami, has created interference on two frequencies used to communicate with air traffic controllers, but so far, FCC, FAA and Florida Department of Law Enforcement Authorities have been unable to locate the transmitter or any individuals associated with broadcasting the illegal signal.

The Miami Herald reports that a large antenna and radio equipment—including three computers, a monitor, mixing board, stereo compressor, microphone, a two-deck CD player, a telephone, DSL modem, two stereo speakers, three gray three-ring binders and 10 cases filled with CDs—were confiscated from an Opa-locka, Fla., warehouse, however, the station remains defiantly on the air.

The music from the pirate radio station has been so troublesome over the last month that a federal engineer who specializes in frequency transmissions has arrived in Miami to help investigators locate the signal, the newspaper says. ''It's intermittent. Not all day, every day,'' Kathleen Bergen, a spokeswoman for the FAA told the Herald. “But clear communication between air control and the pilots is a critical part of flying.''

On any given day, between nine and 20 illegal stations are playing in South Florida, according to the Florida Association of Broadcasters, which deems the region the pirate capital of the nation. Some air around the clock; many switch frequencies and locations often. ''They get a kick out of it. They laugh at everybody,'' said C. Patrick Roberts, the organization's president, in the Miami Herald.

Pirate broadcasting is a third-degree felony in Florida.