The radio transmitter room of KPO in Hale's Department Store is shown. In the foreground is the Western Electric 1,000 watt transmitter. In the background are the marble faced electrical control panels, which were the only ones of their kind in the country. The KPO employee inspecting the transmitter is probably Claire Morrison, KPO's first full-time announcer. (Photo courtesy of Bill Ruck, KNBR.  Colorized by John Schneider.)