first two months on air, 2JJ reached a 5.4% share of the total radio audience, with 17% in the 18–24 age group, while the audience share of rival 2SM dropped by 2.3%. Despite the poor quality of reception caused by the Sydney transmitter, the station still saw rapid growth. Austin explained that station staff threatened industrial action in July 1975 due to the transmitter issues, but officials of the BCB still refused to meet with 2JJ representatives. A new transmitter was not provided until 1980, following the transition to the FM band. 2JJ presenter George "Groover" Wayne, who hosted the show Cooking with George, became very popular, but was also part of the station's controversial reputation. Originally from South Africa, Wayne was fondly remembered by a listener for the 30-year anniversary event: "I remember George being booted off air. One night, reading the gig guide, he announced a fund raiser for NORML where the lucky door prize (or raffle) was a block of hash. I can't remember how long he was off air but he went home early that night." Former Triple J DJ Ian Rogerson stated: "He had this fantastic voice and presence on air...He was just a great communicator...I really miss him." Controversy also emerged after the station hosted an open-air concert in Liverpool, in Sydney's south-west, in June 1975 (featuring Skyhooks and Dragon). A page-one headline in the Sydney Sun that read "Rock Concert Filth Uproar" introduced a story that claimed that many were "shocked" by "depictions of sexual depravity and shouted obscenities", which allegedly caused women in the audience to clap their hands over their ears, and reportedly prompted Coalition frontbencher Peter Nixon to call for the station to be closed down. The station regularly sponsored live concerts and organised a number of major outdoor concert events in the late 1970s, culminating in an outdoor, all-day event in Parramatta Park, Sydney on 18 January 1981 to celebrate the end of Double J and the start of 2JJJ. Attended by 40,000 people, the historic concert featured Midnight Oil and Matt Finish. 1980s: National expansion On 1 August 1980 2JJ began broadcasting on the FM band at a frequency of 105.7 MHz (again restricted to within the greater Sydney region) and became 2JJJ (later, Triple J). Test transmissions in the lead-up to the FM launch used the innovative device of broadcasting stereo audio-verité recordings made by ABC staff,