By day, KBRT transmits 50,000 watts, the maximum for American AM stations. It is a Class D station broadcasting on the Canadian clear-channel frequency of 740 AM, so to avoid interference with Class A station CFZM Toronto and Class B station KCBS San Francisco, at night KBRT greatly reduces power to 190 watts. It uses a directional antenna with a four-tower array. The transmitter is on Black Star Canyon Road in Santa Ana.^[1] KBRT is licensed by the U.S. Federal Communications Commission to broadcast in the HD Radio hybrid format.^[2]^[3] Programming is also heard on 13-watt FM translator K274CI at 100.7 MHzinCorona.^[4]

History[edit]

Early years[edit]

The station signed on the air on June 1, 1952; 72 years ago (1952-06-01). It was a daytimer station, powered at 10,000 watts during the day but required to go off the air at night. The station was founded by entrepreneur John H. Poole as KBIG. Poole had worked at KEZYinAnaheim, and was founder of KBIC-TV (now KWHY-TV) in Los Angeles. Later, he would own KBIG-FM. Studios were located at the transmitter site in AvalononSanta Catalina Island. But because it required a boat ride to get to and from the site, the studios were later relocated to the mainland coast.

From the beginning, there were contentious disagreements with co-channel KCBS 740 in San Francisco over interference between the stations. Much of the path between stations' transmitters was over highly conductive seawater.

According to the July 28, 1979 issue of Billboard Magazine, Bonneville Communications owned KBRT prior to the sale to Crawford Broadcasting. Bonneville, owned by the Church of Jesus Christ of Latter-day Saints (LDS), has dabbled on and off in the Los Angeles radio market. Bonneville also once owned KSWD, "The Sound" at 100.3 FM. After changing call signs from KBIG, KBRT was a mixture of secular and Christian music, with all programming taped, and all song "intros and outros" recorded by professional announcers. There was no live, "on-air" talent until after changing over to a completely Christian radio format.

1980s[edit]

In 1980, the station switched to a Christian talk and teaching format after being purchased by Donald Crawford of Crawford Broadcasting. Upon the death of Percy Crawford, the company's founder, the assets of the original Crawford Broadcasting were split up among his heirs. Just prior to the switch, KBRT played Contemporary Christian Music from sunrise to sunset. The daily sign-on began with a recording of a man's voice: "Good morning. This is K-B-R-T Avalon, and we now begin another day of broadcasting over Southern California. K-B-R-T radio broadcasts on an assigned frequency of 740 kilohertz with a power output of 10,000 watts by authority of the Federal Communications Commission. K-B-R-T's transmitter is located on Santa Catalina Island, and is operated by Kiertron, Incorporated." (Note: Disc jockeys made multiple mentions of "Transmitter Tom," who lived on Catalina Island, and oversaw the station's transmitter.)

Air personalities have included Clark Race, Johnny Magnus, Paul McGuire, Rich Buhler, Dave Sebastian Williams and Program Director, Mike Trout. Magnus featured his trademark "Weather With a Beat," where he would list U.S. and world city temperatures to an upbeat instrumental background. A typical background music track for "Weather With a Beat" was Count Basie's version of Neal Hefti's tune, "Cute", featuring Frank Wess on flute. Previously, KBRT was known as KBIG, airing Easy Listening music.

2000s[edit]

Former logo

Contractors cutting a steel antenna cable with a gas-powered circular saw caused the wildfire that began on May 10, 2007. KBRT had to shut down the transmitter, which was not damaged. Until the transmitter was repaired, the station aired only on KBRT740.com.

Starting on September 19, 2011, KBRT featured David Housholder, Orange County author and pastor, and Roger Marsh in the 3pm-5pm drive-home slot, with "The Bottom Line", a current events show with features in legal, educational, health, and finance segments, replacing "Talk from the Heart" with Rich Buhler, previously hosted by Paul McGuire. Housholder exited "The Bottom Line" in April 2013.^[5] "The Bottom Line" reaches most AM radios in California, since it is syndicated on KCBC 770 AM in the Sacramento/Bay Area region.

For many years, KBRT broadcast at 10,000 watts sunrise to sunset as a daytimer station. On February 28, 2013, KBRT moved to a new transmitter site near Corona, California. It began broadcasting at 50,000 watts sunrise to sunset, added nighttime authorization at 190 watts and had its city of license changed to Costa Mesa.