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58-649: KFRC-FM (106.9 MHz ) is a commercial radio station in San Francisco, California , serving the San Francisco Bay Area . It currently simulcasts sister station KCBS , which carries an all-news format. The station transmits its signal from Mount Beacon atop the Marin Headlands above Sausalito, California , while studios were shared with formerly co-owned CBS O&O station KPIX-TV in downtown San Francisco. On December 10, 1959,

116-510: A 6 + 1 ⁄ 2 -minute montage of famous events and songs from the 20th century, CBS Radio replaced KFRC's Classic Hits format with a simulcast of its all news AM station, KCBS. KFRC continued to broadcast classic hits on KFRC-FM HD2. The station's calls were not converted to KCBS-FM, because its Los Angeles sister adult hits station on 93.1 holds those calls, and Nielsen Audio 's Portable People Meter ratings system does not require call letter verification by panelists. CBS Radio retained

174-449: A semi-official release in 1994 and then an official release in 2008. According to author David Buckley, possessing a copy of the bootleg was the test of a "proper Bowie fan". On July 7, 1978, KMET aired Bruce Springsteen 's concert live from the Roxy . Many songs from that broadcast were included on Bruce Springsteen and the E Street Band's album Live/1975–85 . KMET was a member of

232-561: A contract with KFRC to carry its games; therefore, Family Radio carried the games on 610 AM until the end of the team's 2005 season. After the baseball broadcasts concluded in October 2005, 610 AM dropped the KFRC call sign and became KEAR , while 106.9 FM became KIFR, with a new format to follow after a period of stunting. On October 25, 2005, the Free FM talk radio format was launched, as

290-696: A group of progressive-rock stations that emerged across the country in the late 1960s and early 1970s, along with KSAN , WNEW-FM in New York City, WMMR in Philadelphia, WBCN in Boston, WMMS in Cleveland, and KQRS-FM in Minneapolis. The 1978 movie FM , written by former employee Ezra Sacks, was reportedly loosely based on KMET. The lead character was based around Mike Herrington ,

348-552: A more detailed treatment of this and the above frequency ranges, see Electromagnetic spectrum . Gravitational waves are also described in Hertz. Current observations are conducted in the 30–7000 Hz range by laser interferometers like LIGO , and the nanohertz (1–1000 nHz) range by pulsar timing arrays . Future space-based detectors are planned to fill in the gap, with LISA operating from 0.1–10 mHz (with some sensitivity from 10 μHz to 100 mHz), and DECIGO in

406-479: A new rock format that retained some of Donahue's progressive freedom but gave it energy and consistency that featured programming and high production values similar to those that had been integrated at KROQ. Stevens also designed a futuristic billboard campaign called "Hollywood as seen from Mulholland Drive in the year 2525." Artist Neon Park did ads for KMET as well as the famous billboards. With this new programming design and branded marketing, in 1975 KMET became

464-489: A production company and the station's programing was taken over by Sam Bellamy. Ms. Bellamy, who had been hired from Billboard Magazine , had been Stevens' assistant for most of the time he programmed the station. At the time, the studios of KMET and its local AM counterpart, country-western KLAC , were located across the street from the La Brea Tar Pits on Wilshire Blvd. In Summer 1976, both stations moved to

522-590: A revival of this format. Local management announced that some of the Free FM shows and hosts, such as Carolla, Leykis, and Opie and Anthony, would move to KYCY 1550 AM. 99.7 FM would receive the new call letters KMVQ . (KYCY would subsequently be replaced on January 1, 2009, with a version of KFRC affiliated with The True Oldies Channel , which was itself discontinued on August 31, 2011, in favor of Indian programming as KZDG .) On October 27, 2008, at 7:40 a.m., after playing " Don't Stop Believin' " by Journey , and

580-640: A song, from artists such as Bob Dylan , John Lennon , Pink Floyd , The Doors or Led Zeppelin —that underscored his point. KMET often mixed counterculture comedy skits by the Firesign Theatre and the Credibility Gap with the music. The Credibility Gap broadcast satirical skits during Pasadena's Tournament of Roses Parade in the 1970s. Another KMET staple at the time was Dr. Demento , whose variety show began on KPPC-FM. The Dr. Demento Show moved to KMET-FM in 1972 and soon became

638-562: A strong online emphasis via the 106.9 Free FM website. Podcasting, online streaming, and interactive features provides a bridge between the traditional talk radio format and the "on-demand" features of developing new media. On October 30, 2006, CBS Radio and the Oakland Athletics agreed to a three-year contract to broadcast Oakland Athletics baseball games, 162 regular season games and 15 spring training games, and all playoff games. The contract lasted through 2009 and noted 106.9 as

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696-642: A wide mix of genres such as rock, blues , jazz and folk music . Some of the music played in the spring of 1967 included Jefferson Airplane 's album Surrealistic Pillow , the first Grateful Dead album , Jimi Hendrix 's Are You Experienced and The Beatles ' Sgt Pepper's Lonely Hearts Club Band , which KMPX played uninterrupted in its entirety. Among the DJs were Howard Hesseman who used his experiences to inspire his later performance as Dr. Johnny Fever on WKRP in Cincinnati . In November 1967, Donahue

754-427: Is 1/time (T ). Expressed in base SI units, the unit is the reciprocal second (1/s). In English, "hertz" is also used as the plural form. As an SI unit, Hz can be prefixed ; commonly used multiples are kHz (kilohertz, 10  Hz ), MHz (megahertz, 10  Hz ), GHz (gigahertz, 10  Hz ) and THz (terahertz, 10  Hz ). One hertz (i.e. one per second) simply means "one periodic event occurs per second" (where

812-494: Is also used to describe the clock speeds at which computers and other electronics are driven. The units are sometimes also used as a representation of the energy of a photon , via the Planck relation E  =  hν , where E is the photon's energy, ν is its frequency, and h is the Planck constant . The hertz is defined as one per second for periodic events. The International Committee for Weights and Measures defined

870-493: Is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle ) per second . The hertz is an SI derived unit whose formal expression in terms of SI base units is s , meaning that one hertz is one per second or the reciprocal of one second . It is used only in the case of periodic events. It is named after Heinrich Rudolf Hertz (1857–1894),

928-452: Is usually measured in kilohertz (kHz), megahertz (MHz), or gigahertz (GHz). with the latter known as microwaves . Light is electromagnetic radiation that is even higher in frequency, and has frequencies in the range of tens of terahertz (THz, infrared ) to a few petahertz (PHz, ultraviolet ), with the visible spectrum being 400–790 THz. Electromagnetic radiation with frequencies in the low terahertz range (intermediate between those of

986-555: The "official radio home of the Oakland A's." On May 17, 2007, following that day's game between the Oakland A's and the Kansas City Royals, CBS Radio moved the KFRC call letters from 99.7 FM to 106.9 FM, and changed 106.9 FM's format to classic hits . At the time of 610 KFRC's sale to Family Radio, 99.7 FM and 610 AM had been simulcasting a similar format, also under the KFRC call letters. 106.9 FM's format change served as

1044-449: The 0.1–10 Hz range. In computers, most central processing units (CPU) are labeled in terms of their clock rate expressed in megahertz ( MHz ) or gigahertz ( GHz ). This specification refers to the frequency of the CPU's master clock signal . This signal is nominally a square wave , which is an electrical voltage that switches between low and high logic levels at regular intervals. As

1102-468: The 1970s. In some usage, the "per second" was omitted, so that "megacycles" (Mc) was used as an abbreviation of "megacycles per second" (that is, megahertz (MHz)). Sound is a traveling longitudinal wave , which is an oscillation of pressure . Humans perceive the frequency of a sound as its pitch . Each musical note corresponds to a particular frequency. An infant's ear is able to perceive frequencies ranging from 20 Hz to 20 000  Hz ;

1160-688: The Amalgamated Federation of International FM Workers of the World, operating out of a ferry boat. Crosby hired replacements, negotiations broke down, and the former KMPX and KPPC staffers were eventually hired by Metromedia at their stations KSAN in San Francisco and KMET in Los Angeles, both adopting the freeform progressive album-oriented rock format pioneered at KMPX and KPPC. In 1969, KMPX and KPPC-AM-FM were sold by

1218-574: The Crosby-Pacific Broadcasting Company to National Science Network, Inc. in a $ 1.2 million transaction. They continued with the freeform format, though it was tweaked over the next several years. Crosby eventually purchased a local television station, KEMO , channel 20. In June 1972, KMPX dropped rock and switched to a big band/nostalgia format. When Ludwig Wolfgang Frohlich, the owner of National Science Network died, his estate explored various opportunities to sell

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1276-476: The average adult human can hear sounds between 20 Hz and 16 000  Hz . The range of ultrasound , infrasound and other physical vibrations such as molecular and atomic vibrations extends from a few femtohertz into the terahertz range and beyond. Electromagnetic radiation is often described by its frequency—the number of oscillations of the perpendicular electric and magnetic fields per second—expressed in hertz. Radio frequency radiation

1334-463: The breaking news and views of the day. The progressive format thrived on KMET throughout the 1970s and into the early 1980s, at one time becoming one of the most successful FM stations in the country. But changing trends in music, culture and society, and the advent of strict formatting in radio eventually turned KMET into a relic. The station experienced staff turnover, radio consultants, tight playlists and an increasingly-impersonal approach typical of

1392-487: The calls to keep control of the historic callsign rather than risk having another Bay Area station take them and trade on their nine-decade heritage in the area. KFRC's call letters are only mentioned in form of station identification as "KCBS-AM, KFRC-FM and HD1, San Francisco, Oakland, San Jose" at :59 past the hour. On February 2, 2017, CBS Radio announced it would merge with Entercom . KFRC-FM, along with KCBS, KITS , KLLC and KZDG were retained by Entercom, while KMVQ

1450-476: The daytime foreign language programming gave way to more rock music programming, due to the efforts of newly hired Tom Donahue . The rock music format expanded to full-time on August 6, 1967, as the last of the foreign-language program contracts expired. The presentation of music on the station stood in stark contrast to most other stations of the day. Instead of a hit music-dominated playlist, KMPX played more album cuts, local, emerging and cutting-edge artists, and

1508-715: The entire KMET on-air staff on February 9, 1987, signing off its album rock format at Noon on February 14, 1987, with The Beatles' "Golden Slumbers Medley" (Golden Slumbers / Carry That Weight / The End). KMET was replaced by the new-age KTWV "The Wave". Today, "The Wave" has evolved into a Smooth Jazz format, though now plays Urban Adult Contemporary and is owned by Entercom , which merged with CBS Radio in 2017. The KMET call letters have been since reassigned to an AM Talk radio station, KMET in Banning, California . On June 21, 2009, Los Angeles radio station KSWD ("The Sound 100.3") announced that on July 10, 2009, it would do

1566-440: The event being counted may be a complete cycle); 100 Hz means "one hundred periodic events occur per second", and so on. The unit may be applied to any periodic event—for example, a clock might be said to tick at 1 Hz , or a human heart might be said to beat at 1.2 Hz . The occurrence rate of aperiodic or stochastic events is expressed in reciprocal second or inverse second (1/s or s ) in general or, in

1624-403: The first person to provide conclusive proof of the existence of electromagnetic waves . For high frequencies, the unit is commonly expressed in multiples : kilohertz (kHz), megahertz (MHz), gigahertz (GHz), terahertz (THz). Some of the unit's most common uses are in the description of periodic waveforms and musical tones , particularly those used in radio - and audio-related applications. It

1682-449: The hertz has become the primary unit of measurement accepted by the general populace to determine the performance of a CPU, many experts have criticized this approach, which they claim is an easily manipulable benchmark . Some processors use multiple clock cycles to perform a single operation, while others can perform multiple operations in a single cycle. For personal computers, CPU clock speeds have ranged from approximately 1 MHz in

1740-413: The highest normally usable radio frequencies and long-wave infrared light) is often called terahertz radiation . Even higher frequencies exist, such as that of X-rays and gamma rays , which can be measured in exahertz (EHz). For historical reasons, the frequencies of light and higher frequency electromagnetic radiation are more commonly specified in terms of their wavelengths or photon energies : for

1798-494: The killing of whales, the spraying of marijuana with the toxic chemical Paraquat , the Vietnam War and civil rights , and most importantly they chose the music that they played on the air. Emblematic of this approach was longtime KMET late-night host Jim Ladd (fired October 25, 2011 by one-time rival KLOS-FM , later hosting his own show on SiriusXM , now deceased), whose laid-back philosophical ruminations usually led into

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1856-459: The late 1970s ( Atari , Commodore , Apple computers ) to up to 6 GHz in IBM Power microprocessors . Various computer buses , such as the front-side bus connecting the CPU and northbridge , also operate at various frequencies in the megahertz range. Higher frequencies than the International System of Units provides prefixes for are believed to occur naturally in the frequencies of

1914-588: The more mainstream album oriented rock format. KMET is also notable for broadcasting the program The Mighty METal Hour, which was hosted by Jim Ladd on Friday nights from 10PM to midnight, and showcased the music of many then-up-and-coming hard rock and heavy metal bands, including Metallica , Slayer , Megadeth , Anthrax , Iron Maiden , Queensrÿche , Mötley Crüe , Motörhead , Y&T , Metal Church , Great White , Armored Saint , Dio , W.A.S.P. , Ratt , Quiet Riot , Twisted Sister , Saxon , Riot , Loudness , Warrior and Agent Steel . Metromedia fired

1972-624: The most listened-to Sunday evening radio program in Los Angeles. Following Dr. Demento on Sunday nights, Mike Harrison hosted a phone-in talk show called Harrison's Mike . KMET aired live concerts that went on to become seminal recordings. David Bowie's show at the Santa Monica Civic Auditorium on 20 October 1972 during the Ziggy Stardust Tour was aired by KMET. Bootlegs of the broadcast were widely distributed, even in chain record stores, before it gained

2030-469: The number one radio station in Los Angeles. http://www.shadoe.com/kroq-kmet-fm.html KMET's station identification jingle , "A Little Bit of Heaven, Ninety-Four Point Seven - KMET - Tweedle-Dee" was originally written by Shadoe Stevens and the song was sung by the Pointer Sisters during an interview on his show. This ID "jingle" came to be emblematic for KMET. Stevens left in 1975 to begin

2088-696: The owners more success than they encountered before. But it was to be short-lived. After conflicts with the stations’ owners, the Donahues, Reed and the rest of the KPPC and KMPX staff left both stations and went on strike . As prospects for resolving the strike looked hopeless (the owners had hired scabs to continue the rock programming), Tom Donahue looked elsewhere, and eventually convinced Metromedia to install KPPC's format at KMET in June 1968. They did likewise at KMET's sister station, KSAN-FM in San Francisco. Many of

2146-415: The personalities at both stations transferred to Metromedia. The KPPC format was only mildly successful. After leaving KROQ AM/FM , Shadoe Stevens was hired by General Manager L. David Moorhead in 1974 to create something new for the struggling format KMET had put in place. With a staff that included B. Mitchell Reed, Stevens, Jimmy Rabbitt, Brother John, and Mary ("The Burner") Turner, Stevens introduced

2204-491: The program director for much of the era preceding the film. Much of the history of KMET is documented in Jim Ladd's book Radio Waves , where the station is referred to as Radio KAOS and many of the DJs are given pseudonyms. Arguably, 1978 was the pinnacle year at the station. The line-up was impressive. Jeff Gonzer, Bob Coburn, Cynthia Fox, Jack Snyder, Mary Turner, and Jim Ladd. Ace Young and Patrick 'Paraquat' Kelley provided

2262-692: The quantum-mechanical vibrations of massive particles, although these are not directly observable and must be inferred through other phenomena. By convention, these are typically not expressed in hertz, but in terms of the equivalent energy, which is proportional to the frequency by the factor of the Planck constant . The CJK Compatibility block in Unicode contains characters for common SI units for frequency. These are intended for compatibility with East Asian character encodings, and not for use in new documents (which would be expected to use Latin letters, e.g. "MHz"). KMET (FM) As with many FM stations at

2320-564: The rules for capitalisation of a common noun ; i.e., hertz becomes capitalised at the beginning of a sentence and in titles but is otherwise in lower case. The hertz is named after the German physicist Heinrich Hertz (1857–1894), who made important scientific contributions to the study of electromagnetism . The name was established by the International Electrotechnical Commission (IEC) in 1935. It

2378-544: The sale at the FCC and ended in a 1978 settlement where Golden Gate would take over the KMPX call letters and format on its own station. Golden Gate also would operate from the former KMPX studios. The three-way switch occurred September 13, 1978, with 106.9 becoming the new location of KEAR's religious format. From October 4, 1978, to October 17, 2005, 106.9 served as Family Radio's flagship Christian radio station. KEAR's programming

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2436-399: The schedule became dominated by various brokered foreign language programs by 1966. Though KMPX's daytime schedule was heavy with ethnic programming, the midnight-6 AM slot was open. On February 12, 1967, on-air personality Larry Miller was given the shift, where he played his preferred folk rock music programming. The popularity of what Larry Miller was doing caught on very rapidly and soon

2494-409: The second as "the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium -133 atom" and then adds: "It follows that the hyperfine splitting in the ground state of the caesium 133 atom is exactly 9 192 631 770  hertz , ν hfs Cs = 9 192 631 770  Hz ." The dimension of the unit hertz

2552-413: The specific case of radioactivity , in becquerels . Whereas 1 Hz (one per second) specifically refers to one cycle (or periodic event) per second, 1 Bq (also one per second) specifically refers to one radionuclide event per second on average. Even though frequency, angular velocity , angular frequency and radioactivity all have the dimension T , of these only frequency is expressed using

2610-579: The station began carrying the Tom Leykis and John and Jeff shows. In addition, KIFR added locally based talk shows from The Dog House , John London, Darien O'Toole, Turi Ryder, Johnny Wendell and Scott and Casey. When CBS' post-Howard Stern morning show strategy began in January 2006, KIFR picked up the new The Adam Carolla Show from Adam Carolla . Weekday evenings, then middays were hosted by Chris Daniel and Brad Giese , who came together on air as

2668-497: The station began operating in multiplex stereo , and the call letters were changed to KMPX, for "multiplex", the following month. Soon after, Crosby gained authorization by the Federal Communications Commission (FCC) to increase the station's power from the original 37,000 watts to 80,000 watts. By mid-1964, KMPX was airing a middle of the road music format. As the money-strapped station struggled,

2726-557: The station for $ 1 million. In accordance with FCC ownership guidelines at the time, Family Radio sold their station at 97.3 to CBS Inc. for $ 2 million, and CBS in turn sold their lower-powered station at 98.9 MHz to a Black-owned local company, Golden Gate Radio, for $ 850,000. The sale, though, caused controversy among a group of dedicated KMPX listeners, organized as the KMPX Listeners Guild. Their objections, backed by petitions signed by more than 20,000 listeners, held up

2784-745: The station, owned by San Francisco businessman and future San Francisco/Golden State Warriors owner Franklin Mieuli , signed on at 106.9 MHz with the KPUP call letters . It was one of two Bay Area stations to sign on that day: three hours later, KWME in Walnut Creek began broadcasting. In July 1960, the call letters were changed to KHIP, and the station aired jazz music programming. Mieuli sold KHIP on July 1, 1962, to Leon Crosby, who had previously owned KHYD in Hayward . Under Crosby's ownership,

2842-486: The station. In 1973, a sale to KMPX, Inc.—a subsidiary of the Burbank Broadcasting Company, which bought KPPC-FM—failed. A 1975 offer from film director Francis Ford Coppola to purchase KMPX for $ 870,000 was not consummated because of problems at one of Coppola's other businesses. The company finally found a buyer in 1976, when Family Radio , owner of KEAR (97.3 FM) , struck a deal to purchase

2900-479: The then-Metromedia complex where KTTV Channel 11 was located. KMET stood in direct contrast to other music stations of the era. KMET and other progressive-rock stations played more eclectic artists with much longer songs and more socially-conscious lyrics than the Top 40 AM stations. The disc jockeys talked far less, and in a more personal, relaxed manner. They voiced their opinions on controversial topics, such as

2958-652: The time, KMET featured an automated format (with female voices and middle-of-the-road music). The origin of KMET's freeform rock music format came about due to events at a rival radio station. In 1967, popular Top 40 disc jockey Tom Donahue (Rock Radio Hall of Fame inductee 2015) and his wife Raechel took the FM underground rock sound to KMPX in San Francisco, and soon, along with L.A. Top 40 personality B. Mitchel Reed , to KPPC-FM in Pasadena. Both stations quickly became popular with their innovative formats, and brought

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3016-412: The topical call-in show The Gray Area . Documentary filmmaker and San Francisco socialite Emily Morse hosted Sex With Emily , a show that started as a podcast, late Saturday nights. "On The Couch with Drew and Marcus" was a weekend show on Free FM. It was a college show at San Francisco State and became a weekend staple for Free FM. All the shows can be found online at www.drewandmarcus.com. "Gamer!"

3074-480: The unit hertz. Thus a disc rotating at 60 revolutions per minute (rpm) is said to have an angular velocity of 2 π  rad/s and a frequency of rotation of 1 Hz . The correspondence between a frequency f with the unit hertz and an angular velocity ω with the unit radians per second is The hertz is named after Heinrich Hertz . As with every SI unit named for a person, its symbol starts with an upper case letter (Hz), but when written in full, it follows

3132-415: Was a one-hour weekend radio show that aired on Saturday mornings on KIFR that highlighted the world of video gaming. Hosted by Karlenea B and Keith Williams, they had interviews with video game makers, players, and other people of interest to the video gaming world. On August 1, 2006, Opie and Anthony started airing on the station on a tape delay basis from 10 AM-1 PM. KIFR and the Free FM format included

3190-490: Was adopted by the General Conference on Weights and Measures (CGPM) ( Conférence générale des poids et mesures ) in 1960, replacing the previous name for the unit, "cycles per second" (cps), along with its related multiples, primarily "kilocycles per second" (kc/s) and "megacycles per second" (Mc/s), and occasionally "kilomegacycles per second" (kMc/s). The term "cycles per second" was largely replaced by "hertz" by

3248-482: Was also syndicated to the company's other radio outlets across the country. CBS entered the picture once again in April 2005, when parent company Viacom struck a deal with Family Radio to trade their strong-signaled AM facility, KFRC (610 AM) , for the 106.9 MHz facility. Until CBS was able to install their own programming on 106.9 FM, KEAR simulcast on both frequencies. The Oakland Athletics baseball team had

3306-477: Was hired to bring the progressive rock to KMPX's sister station in Southern California, KPPC-FM . The difficulties of managing two stations and friction between Donahue and Crosby led to Donahue's resignation, followed by a strike by the loyal Donahue-led KMPX and KPPC staff on March 18, 1968, principally over the DJs wanting more freedom over the songs played on the stations. The DJs organized as

3364-412: Was placed in a divestiture trust (along with Entercom's KOIT , KBLX and KUFX ) in preparation of a sale to a permanent owner. The merger was approved on November 9, 2017, and was consummated on November 17. KFRC-FM is rebroadcast on the following FM Booster: ** = Audacy operates pursuant to a local marketing agreement with Martz Communications Group . Hertz The hertz (symbol: Hz )

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