page_title: KZY
section_title: KZY (Rock Ridge station)
hierarchical_section_title: KZY / KZY (Rock Ridge station)
caption_attribution_description: English: Advertisement for radio station KZY which appeared on the back page of the June, 1922 issue of Radio magazine
context_page_description: KZY was a radio station located in Oakland, California, that was licensed to the Atlantic-Pacific Radio Supplies Company from December 9, 1921 until its deletion on January 24, 1923. It, and the Preston D. Allen station, KZM, were the first broadcasting stations licensed to Oakland.
  KZY was the successor to Experimental station 6XC, which dated to mid-1920, and which founder Lee de Forest suggested deserved credit as the "first radio-telephone station devoted solely" to broadcasting to the public. Including its predecessor, KZY's broadcasting history predated that of many better-known pioneer stations, including WWJ in Detroit, Michigan and KDKA in Pittsburgh, Pennsylvania.
context_section_description: Although initially there were no formal standards for U.S. radio stations that provided entertainment broadcasts, effective December 1, 1921 the Department of Commerce adopted a regulation requiring that stations engaged in broadcasting to the public now needed to hold a Limited Commercial license. Therefore a new license, with the randomly assigned call sign of KZY, was issued for the station on December 8, 1921. At the same time, it was decided to transfer the station to the home of Henry M. Shaw, the Atlantic-Pacific Radio Supplies president, located in the Rock Ridge section of Oakland, California, and operate KZY from there.
  After a rush to move the facility to the new site, KZY's official opening took place on Christmas morning, December 25, 1921, with a live concert of Christmas-themed music. 6XC had operated on its own longwave frequency, but the new regulations required that all broadcasting stations use a shared entertainment wavelength of 360 meters (833 kilohertz). Under the initial timesharing agreement, KZY's schedule was 3:30-4:30 p.m. and 7:00–7:30 p.m. daily (except Sundays), plus 3:00–4:00 p.m. on Sundays, 2:30–3:15 p.m. on Wednesdays, and 8:15–9:00 p.m. on Saturdays.
  Due to its more remote location, the station attracted fewer prominent artists than it had in San Francisco, although it did feature the radio debut of Glenhall Taylor, who on May 11, 1922 shared the microphone with Stanford University's first president, David Starr Jordan. The station also was known for picking up the signals of other distant radio stations, including WGY, the General Electric station in Schenectady, New York.
  Although KZY was well-managed, the station would be short-lived, and gave its last known broadcast the evening of June 17, 1922. At the time it was stated that this was only a temporary suspension, necessitated because Henry M. Shaw had resigned as Atlantic-Pacific's president and the station needed to be moved from his home. There were plans to move KZY back to San Francisco with the new location said to be the Atlantic-Pacific headquarters at 646 Mission Street. However, it does not appear that KZY ever broadcast from the new location, and later that year the station was reported to have permanently ceased operations, although it was not formally deleted until January 24, 1923.
caption: Advertisement for radio station KZY.[15]
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