The Oregonian had earlier constructed an iconic building on the corner of Sixth and Alder Streets, the first steel-frame building wests of the Mississippi, which featured a huge clock tower. KGW's transmission equipment was located at the top of the clock tower along with the station's primitive "studio." At that time a radio transmitter required two towers with the transmission wire(s) stretched between them. One such tower was located on the clock tower roof and the other on the Northwestern Bank Building, a full block away, with the transmission wires stretched between them high above Alder Street.