In 2006, an unknown pirate FM radio station started broadcasting in Metro Manila with the power of 500watts at 107.9MHz. The station played nothing but underground club music, no call sign, no jocks, just a stinger saying "You're tuned to Underground Radio" and a recorded female voiceover mentioning a mobile phone number that served as a request line in between queues. With hundreds of text messages being received daily and the station was a hot topic on dozens of blog sites on the internet. From that moment on they knew that people were tuning-in. And so they finally decided to take things to the next level.
In April 2007 they temporarily ceased transmission so it could obtain all the necessary broadcast permits from the National Telecommunications Commission to legitimize the station.
On June 2007 the station was back on air with a stonger signal and a new name "107.9 U-Radio" They moved their transmitter facilities to Tagaytay City and the studio is now located in Pasig. It is now owned and operated by Brainstone Broadcasting Inc, formed by a group of young entrepreneurs who helped bring the station back on air. The station is now broadcasting with an Effective Radiated Power (ERP) of 2500W. Its reach comprises of the whole of Metro Manila, as well as some areas in the north (Bulacan, Pampanga) and south (Cavite, Batangas, Tagaytay). In addition, it also started doing live broadcast feeds from different bars and clubs (Embassy SuperClub, Embassy Cuisine, Warehouse 135, Alchemy, Opus Bar, and others) in the metro.
On July 2008 the temporary permit issued by the National Telecommunications Commission expired and the station was denied a new permit for unknown reasons. On October 2 2008 the station's broadcast facilities were raided by the NTC and police officials for broadcasting with an expired permit and the main transmitter and STL system were confiscated. On October 12 2008 the station was back on air using its back-up system at the same location in Tagaytay.