KYUU 99.7 FM
San Francisco, California
January 1977-October 1988
The roots of 99.7 KYUU can be traced back to NBC's construction of the
station as the FM adjunct to its powerhouse KPO (680 AM) back in 1946.
Originally permitted to operate at 98.1 megacycles with 3,000 watts of
power, KPO-FM was granted an increase to 45,000 watts in July 1947.
The station became KNBC-FM in November 1947 (concurrent with KPO
changing call letters to KNBC on the AM side), with a move to 99.7 FM in
1948. Throughout its early existence, KNBC-FM — which became KNBR-FM in
November 1962 — duplicated much of its AM counterpart's programming,
with brief attempts at flying solo. On June 18, 1975, KNBR-FM adopted a
fulltime news format as part of NBC's NIS (News & Information Service)
Network, then switched call letters to KNAI (for "News
And Information") to better reflect the new
In January 1977, the news format was dropped and KNAI became KYUU,
airing the "FM 100 Plan" Adult Popular Music format programmed by Peters
Productions. Later in the year, KNBR and KYUU moved to new studios at
1700 Montgomery Street, Suite 400, in San Francisco. In 1978, John Hayes
became general manager of KYUU; he was promoted to vice president of
NBC's FM Radio Division in January 1980, while continuing to oversee
KYUU was moved to its own studio complex at 530 Bush Street in March
1982, leaving KNBR behind on Montgomery Street, while adopting a new
Contemporary Hits format. Terry De Voto replaced John Hayes as KYUU's
general manager in September 1984.
On October 7, 1988, KYUU and four other NBC-owned stations (not
including KNBR) were sold for $121.5-million to Jeff Smulyan's Emmis
Broadcasting, at which time KYUU became KXXX (X-100).