STW Perth is owned by WIN Corporation and affiliated to the Nine Network. The call sign STW stands for Swan Television, Western Australia. STW-9 broadcasts from a transmitter mast located in Walliston in the Perth Hills beyond Kalamunda. Its operational base and studios are located at 9 Gay Street, Dianella, across the road from Seven’s studios with approximately 150 staff working at the station. STW9 commenced broadcasting on 12 June 1965 and was the second commercial television station in Perth. Members of the Australian Museum of Motion Picture Technology toured the studios just before the station was brought by WIN Corporation.