 Before the station launched its Emu Plains based translator in the late 1970s, it was exclusively a Blue Mountains based licence.The new frequency, 1476 kHz, enabled programmers to extend the audience reach to Penrith, and draw revenue from businesses in the area.To combat the potential damage to their Sydney audiences at the time, a number of Sydney radio stations bought the licence and experimented with various automated technologies, none of which were seriously designed to draw mass audiences.