October. 18, 1900

  • Bill Bates born in Freedom, California (Near Watsonville in Santa Cruz County.)
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October 1920.

  • KDKA in Pittsburgh, PA  became the first commercial broadcast station on the air in the United States.

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Dec. 7, 1921

  • KWG comes on the air in Stockton.
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June 18,1933

  • KTRB AM on the air on 740 KCs. Power 250 watts daytime operation only from studios at McHenry and Sylvan in Modesto. Station owned by
Bill Bates and Thomas R. McTammany who formed a partnership on October 1, 1933
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1940- 1941

  • Bill Bates purchased 40 acres of wheat land on the north side of Norwegian Ave for the new KTRB studios.
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Nov. 1941

  • KTRB construction begins on Norwegian Ave
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Early 1949
   
  • KTRB on the air from Norwegian Ave. with 1,000 watts of power.
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Jan 3, 1947

  • Chester Smith started his broadcasting career on KTRB.
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April 3, 1948

  • KBEE-FM, became Modesto's second commercial station on the air in the Modesto market.

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1948-49

  • The transmitter room addition was added to the original KTRB building on Norwegian Ave.
  • The AM power was increased from 1 KW to 5 KW.  (Kilowatts)

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Late 1949

  • KTRB FM becomes the second FM station and 3rd commercial station  on the air in Modesto. 16,000 watts of power at 104.1 MHz
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Oct. 7, 1949.
   
  • KTUR, 1390 KCs in Turlock on the air.
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1950
   
  • KMOD AM 1360 KCs on the air in Modesto.  Call letters changed to  KASH, KZUN  and later to KFIV.
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Sept. 29, 1950

  • Bill Bates becomes sole owner of KTRB when he bought out his former partner Leslie Cleary, an attorney and former District Attorney in Stanislaus Co.
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Nov. 1, 1951

  • KBOX AM  970 KCs on the air in Modesto.
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October  1951
   
  • KTRB- FM power reduced to 5 KW
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March 1952 
   
  • KTRB AM power remains at 5 KW,   FM reduced 3 KW
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April 1953
   
  • KTRB AM  power increased 10 KW daytime, 1 KW at night.   FM  remained at 3 KW  ERP.  (Effective Radiated Power)
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Feb. 17, 1954

  • The FCC granted a construction permit to build KTRB-TV on Channel  14.


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August 1960
   
  • KTRB AM power  10 KW   FM increased to 4.7 KW
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Oct. 17, 1963
   
  • KLOC AM 920 Kcs on the air in Ceres. 500 watts.  Daytime only.


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June 6, 1966
   
  • KOSO-FM Patterson 93.1, CA on the air.

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April 3, 1969
   
  • Bill Bates died in San Jose, CA at the age of 69.

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1973
  • Big Valley Broadcasting purchased KTRB from estate of Bill Bates for $675,000.

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December 12, 1977

  • The Stanislaus Amateur Radio Association 2 meter repeater was put into service from the KHOP-FM  transmitter building located on Black Butte  near Tracy, CA.   Antennas were side-mounted on the KHOP-FM 380 ft tower and operated on 146.73/13 MHz.  29 years later to the month the
        380 ft tower came down in a storm.  (See photos)
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December 1977

  • KTRB-FM  became KHOP-FM and the began transmitting with 50,000 watts of power from their new transmitting site on Black Butte near the
            intersection of Corral Hollow Rd. and  I-580 just west of Tracy, CA.
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June 16, 1975
   
  • KTRB changes format to talk radio from country.
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1981

  • Pete and Mike Pappas buy out their Big Valley Broadcasting business partners becoming sole owners of KTRB.
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1983

  • Bill Bates' first wife Maria de la Pena Bates died in San Jose.
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March 11, 1985
   
  • KDJK-FM  95.1 MHz sign on the air in Oakdale, CA.
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Aug. 14, 1986
   
  • Pete Pappas dies in Price, Utah of massive heart attack.
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October 1986

  • Pete Pappas' wife Bessie bought out her brother-in-law Mike Pappas' portion of KTRB & KHOP for $2.5 million.  Shortly thereafter Bessie sold
           KHOP-FM for $6 million to a broadcasting group from Sacramento. 

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January 31, 1990

  • Mike Pappas dies of heart attack in Fresno, CA. at 52.

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Aug. 24, 1992

  • KATM, Kat-Country replaced beautiful music station KBEE-FM when purchased by Citadel Co.

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Nov. 1, 1993
   
  • KTRB dropped its country music format and switched to Spanish Radio Labio La Picosita.
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January 1995
   
  • KRVR, The River on the air from Copperopolis with studios in Modesto.

  • KMIX FM  98.3 & KMIX AM 1390 sold to Silverado Broadcasting of Stockton and changes  programming to Spanish La Buena music.
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August 1997

  • Capstar Broadcasting has reached an agreement to purchase local radio station KOSO (93.1 FM)
  • subject to approval  by the Federal Communications.

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Mar. 14, 1998
   
  • KTRB dropped Spanish Radio Labio and returned to Talk Radio.

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October 2002
   
  • Bessie Pappas sold KTRB to her brother-in-law Harry Pappas.

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Aug. 25, 2004
   
  • The application to move KTRB 860 Kcs to San Francisco granted by the FCC.

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Spring 2005
   
  • Renovation of KTRB on Norwegian begins and local program origination reestablished.
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June 19, 2006

  • KTRB, 860 KHz ends 73 years of operations in Modesto.  Call letters and frequency moved to San Francisco.

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June 25, 2006

  • KMPH at 840 KHz comes on the air as a replacement for KTRB with studios in a temporary trailer in the parking lot of the original KTRB building on Norwegian Ave.

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Feb 1, 2007
   
  • KTRB San Francisco signs on the air transmitting from it's night time site near Livermore.

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Mar. 15, 2007
   
  • KTRB San Francisco debuts format called "Truth Radio" featuring mostly syndicated talk shows.

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(Abbreviations:   KCs = Kilo Cycles.    KHz =Kilo Hertz.    ERP= Effective Radiated Power.    KW= Kilo Watts.    Kilo = 1,000.  
                         FM= Frequency Modulation .   AM- Amplitude Modulation.   MHz= Mega Hertz. )





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