Activists have defied telecommunication laws by making an unauthorised broadcast on a frequency used by a radio station owned by tycoon Li Ka-shing. The group is calling the move a 'first step in the fight to open up the airwaves'. Citizens' Radio, run by a group including district councillor Tsang Kin-shing and former anti-Tung Chee-hwa campaigner Siu Yeuk-yuen, made the broadcast in the Wan Chai and Causeway Bay areas, using amateur equipment. The station said its broadcast could be heard clearly from the Bank of China in Admiralty to Victoria Park and parts of Happy Valley. Mr Tsang said they would continue to broadcast every evening from 8pm for about an hour. 'We will broadcast in 18 individual districts throughout Hong Kong. It is just like guerilla warfare,' he said. Last night's internet-based broadcast, from 10.15pm to 11.30pm, went out on the 102.8 FM frequency, which is within the band occupied by Mr Li's Metro Finance station. Mr Tsang said the talk show was an act of civil disobedience because the government had been dragging its feet on opening up the public airwaves. 'This is only the first step in the fight to open up the airwaves,' he said. Last month, the group applied for a licence from the Broadcasting Authority to operate a public radio station. But officials, who insist most airwaves are already occupied, have yet to respond. The rebel station is aiming to provide an alternative voice to government and commercial stations, and to provide alternative cultural and political programmes. Last night's live 'trial broadcast' was conducted by Mr Tsang, talk-show host Wong Yuk-man and fellow activists. Organisers said it was a historic moment because it signalled the breaking of what they termed a monopoly of the freedom of speech by officials and tycoons. Metro Finance's broadcast band is between 102.4 and 106.3 FM, but Mr Tsang said the choice of frequency was not directed at Mr Li. 'We don't want to jam anybody's frequency, but we found 102.8 has the best broadcast quality. This is only a trial broadcast.' Under the Telecommunications Ordinance, it is illegal to possess or use without a licence any apparatus for radio communications that generates radio waves. A spokesman for the Commerce, Industry and Technology Bureau said the Office of the Telecommunications Authority would monitor the broadcasts. A spokeswoman for Metro Broadcast Corporation, which operates the Metro Finance channel, said: 'As the licensee, we of course do not want to see other parties jam or overlap our frequency spectrum.' Legislator Albert Cheng King-hon, deputy chairman of the Legco information technology and broadcasting panel, said some trial broadcasts in a small area were not against the law.