69-783: KCBS-FM (93.1 MHz ) is a commercial radio station in Los Angeles, California , serving Greater Los Angeles . It is owned by Audacy, Inc. , and broadcasts an adult hits music format branded "93.1 Jack FM ". Unlike most radio stations airing the Jack FM formula, KCBS-FM runs a fairly focused playlist of popular classic rock and modern rock tracks. Currently, the station has no DJs. The only voices heard on Jack-FM are Crystal Z and Dr.Cranfill with "Jacktivities" (events and whatever announcements deemed worthy by "Jack") and Howard Cogan supplying prerecorded quips and ironic remarks between songs. Unlike most other stations in this format,
138-501: A brokered arrangement between The Walt Disney Company and CBS Radio. This arrangement ended in June 2018, when the HD2 subchannel became a simulcast of all-news KNX (1070 AM). As of November 2022, KRTH-HD2 airs an LGBTQ-oriented talk/EDM format, known as Channel Q . Since 2011, KRTH has earned five Marconi Radio Award nominations, winning three awards. ** = Audacy operates pursuant to
207-464: A CHR format with the "AMP Radio" branding. Former sister station KFWB had been broadcasting on the KCBS-FM HD3 signal, but due to that station's sale, its signal is no longer heard on KCBS-FM. As of December 6, 2018, that signal began simulcasting all-news KNX (AM 1070). It has since carried KFRG/KXFG. On January 25, 2021, KCBS-FM-HD3 started carrying a nationally syndicated sports network,
276-507: A blend of pop and rock hits from the late 1960s to late 1980s, with a sprinkling of newer, sometimes almost current, tunes. Eventually, the newer songs and pop songs were phased out in favor of mostly classic rock and classic alternative. KCBS-FM is the longest-serving of all of CBS' Jack stations. CBS also introduced the Jack FM format in New York City , Las Vegas , Chicago , Dallas , Minneapolis , Seattle and Baltimore . Though
345-552: 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
414-591: A re-imaging marketing campaign to bring in new listeners believing the "CBS-FM" call letters had a stronger association with the oldies format. These call letters had previously been used by two CBS-affiliated stations (now KSOL and KLLC ) in San Francisco. KCBS-FM still kept the oldies format, but shifted its focus mainly to the 1960s decade of oldies with a lesser selection of 1950s oldies, and more early-1970s rock oldies to better compete with KRTH. KCBS-FM struggled with low ratings, while KRTH continued to hold
483-585: A similar amount of Christmas music, but only from oldies artists such as the Beach Boys or Alvin and the Chipmunks .) For several years, KRTH switched to all-Christmas music from 12:00 p.m. on Christmas Eve to 12:00 p.m. on Christmas Day. Following the departure of program director Jhani Kaye in 2013, a series of changes at KRTH accelerated the station's transition from oldies to a classic hits format. After Labor Day 2013, under new PD Rick Thomas,
552-598: A younger demographic. In November 2009, KRTH reached its first milestone by reaching their first #1 overall in the Arbitron 12+ Ratings; the station had never reached a #1 overall in its 37 years broadcasting as K-Earth. In 2010, K-Earth began adding songs from the mid- to late 1980s into its mix from artists such as Janet Jackson , The Bangles , Deniece Williams , and The Police . KRTH still played an occasional pre-1964 song such as " Shout ", " Jailhouse Rock ", or " Tequila " (about one every other hour). Another change that
621-420: Is Joe Cipriano ), Chris Lance, Todd Parker (replaced by Jack Armstrong several months later), and Mark Hanson. Rich Fields , who would later become the announcer on The Price Is Right for over six seasons, also joined KKHR in the station's last year with the "Hit Radio" format. The KKHR call sign is now used by an Americana / Texas Country / Southern Rock hybrid station serving Abilene, Texas . Due to
690-722: Is a commercial radio station that is licensed to Los Angeles, California , United States and serves the Greater Los Angeles area. The station is owned by Audacy, Inc. and broadcasts a classic hits format . KRTH's studios are located on Wilshire Boulevard in the Miracle Mile district of Los Angeles. The station's signal covers an extremely large area of Southern California due in part to its antenna location on Mt. Wilson . It can be heard as far south as San Diego , as far east as Moreno Valley , as far west as Santa Barbara , and as far north as Barstow . KRTH
759-490: Is also the voice-over artist for other "Jack FM" stations around the country. In October 2008 , CBS Radio chose not to move the KCBS-FM call letters to its sister station at 106.9 FM in San Francisco, after that station flipped from classic hits to an all-news simulcast of KCBS . That station remains KFRC-FM , heritage calls in themselves. On February 2, 2017, CBS Radio announced it would merge with Entercom . The merger
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#1732801902666828-517: Is atop Mount Wilson . KCBS-FM broadcasts using HD Radio technology. Two digital subchannels carry country music and sports betting formats. On March 30, 1948, the station signed on as KNX-FM. In its early years, KNX-FM was mostly a simulcast of sister station KNX 1070 AM . In the mid-1960s, KNX-FM, along with other CBS -owned FM radio stations, began airing an easy listening format branded as "The Young Sound". It played mostly instrumental cover versions of popular songs, but it
897-423: 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), 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
966-484: Is simply "mellowrock.com" with a similar mix of mellow rock and classic features.) On August 25, 1983, KNX-FM adopted a Top 40 music format, similar to the other CBS Radio FM stations, and branded as "Hitradio 93 KKHR". The heritage KNX-FM call sign switched to KKHR. KKHR was not a traditional top 40 music format of the time, as the playlist was more stringently limited to 30 songs. The original KKHR disc jockey staff consisted of Lou Simon, Dave Donovan (whose real name
1035-549: Is the flagship station for the nationally syndicated program Rewind with Gary Bryan . KRTH broadcasts in the HD Radio (hybrid) format. In May 1940, the Federal Communications Commission (FCC) authorized an FM band effective January 1, 1941, operating on 40 channels spanning 42–50 MHz . (This was later changed to 88–106 MHz, and still later to 88–108 MHz, which increased
1104-477: 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 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
1173-452: 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
1242-547: The BetQL Network , as "The Bet". ** = Audacy operates pursuant to a local marketing agreement with Martz Communications Group . MHz The hertz (symbol: Hz ) 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
1311-538: The Johnny Mann Singers, which helped it reach higher ratings. The Real Don Steele left KCBS-FM in mid-1992 to join KRTH. Charlie Tuna, the morning host at KODJ/KCBS-FM from 1989 to 1993, would later work at KRTH from 2008 to 2014. After his tenure at The Price is Right , Rich Fields was also on KRTH for a time as well. On July 12, 1991, at 2 pm, KODJ changed to its present call sign, KCBS-FM, as part of
1380-480: The Paramount Pictures studio lot) as a result of KCAL's operations being merged into KCBS-TV's Columbia Square facility, which KRTH had been operating out of. (They would again be split after the sale of the radio stations to Entercom in 2017.) With its target demographics aging and ratings sagging, KRTH, along with most oldies outlets across the country, began adding 1970s songs to the playlist in
1449-564: The call sign does not include any form of the word "Jack", opting instead to keep call letters tied to the station's former CBS corporate identity. Although Jack proclaims that the station is run "in a dumpy little building in Culver City ", the KCBS-FM studios and offices are actually located at 5670 Wilshire Boulevard in Los Angeles, after moving from a previous location at the corner of Fairfax and Venice in 2018. The transmitter
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#17328019026661518-638: The "Runners Up of Classic Rock and Roll Weekend", consisting of #2 songs. The "Firecracker 300" was played over the Fourth of July weekend. Other specials included a Memorial Day weekend "A to Z", the "Super Sixties Weekend", and the "Souvenirs of the Seventies Weekend". In February 1986, KHJ adopted the KRTH call letters; this necessitated the FM station adjusting its call sign to KRTH-FM. In 1988, RKO General sold KRTH-AM-FM to Beasley Broadcasting due to
1587-449: 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
1656-487: The 1955–1970 period, with an emphasis on the late 1960s and Motown which had been removed from the main channel's playlist. The HD2 station was originally branded "K-Earth Classics" and also streamed online. KRTH-HD2 was reported by social media sites and the TuneIn platform to be the highest listener rated station of CBS Radio's owned-and-operated oldies stations. On May 11, 2016, the channel began carrying Radio Disney under
1725-468: 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 ;
1794-509: The FCC modified its policy for commercial FM station call letters, and the call sign was changed to KHJ-FM, after its sister AM station KHJ . In 1946, as part of a transfer of stations to the new FM band, KHJ-FM was assigned to 99.7 MHz. In 1947, KHJ-FM was reassigned to its current broadcast frequency of 101.1 FM, eventually relocating its transmitter to Mount Wilson . In 1965, when KHJ adopted its " Boss Radio " top-40 format, that station
1863-553: The FCC. KODJ focused more on the 1950s and the early 1960s era of oldies music than KRTH. DJs on KODJ were The Real Don Steele , Charlie Tuna , Rich Fields, Machine Gun Kelly and Jeff Serr. In response to KODJ's debut, KRTH gradually reduced and eventually faded out the number of newer songs from its playlist, focusing mainly on the 1960s decade of oldies with a few songs from the late 1950s. In addition, KRTH brought in Bill Drake as consultant while featuring all new jingles by
1932-459: The KRTH call sign in May 1990, continued acknowledging the mid- and late 1970s and continued playing moderate amounts of pre-1964 material until 1991, when management eliminated the 1980s music and most post-1972 songs. The two stations went head-to-head for a few years, with K-Earth consistently getting higher ratings and emerging as the winner. In an attempt to distinguish itself from K-Earth and regain
2001-476: 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
2070-628: The corporate name "Audacy". KCBS-FM programming is found on the Audacy.com website and app. On June 6, 2024, KCBS-FM temporarily rebranded as 93.1 Blade FM in honor of Richard Blade receiving a star on the Hollywood Walk Of Fame . In addition to the main Jack FM format on HD1, KCBS-FM-HD2 simulcasts KFRG , its co-owned country music station in San Bernardino . Before KLSX switched from talk to CHR in 2009, 93.1 HD2 carried
2139-644: The decade. Older songs from before the British Invasion of 1964 were increasingly dropped from the playlist, and the station began to emphasize music of the late 1960s, especially that of Motown. The playlist itself began to shrink, with only the biggest, most-requested hits from this period played in heavy repetition. In 2002, the station would be reunited under common ownership with the former KHJ-TV when CBS bought KCAL-TV ; KRTH wound up moving into KCAL's old facility at 5515 Melrose Avenue in Hollywood (on
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2208-519: The early 2000s, particularly disco . Artists such as Stevie Wonder , Elton John , ABBA , the Bee Gees , Earth, Wind & Fire , and Peter Frampton were combined with 1960s artists such as The Supremes and the Beatles. Though still repetitive, the playlist was also rotated more frequently, with a few rediscovered oldies brought "out of the vault" on occasion, while other songs were "rested" from
2277-668: The early 2000s, with a heavy focus on the 1980s. However, the station's playlist is limited to avoid excessive overlap with sister station KCBS-FM , which airs an adult hits format. In addition to Rewind with Gary Bryan , KRTH also broadcasts America's Greatest Hits , hosted by Scott Shannon , and the 1980s and 1990s editions of Backtrax USA with Kid Kelly on the weekends. Bryan, Kelly, and Shannon are all former disc jockeys at WHTZ (Z100) in New York City. KRTH broadcasts in HD Radio with two subchannels: KRTH-HD2 began broadcasting in 2010, originally featuring oldies from
2346-444: The end of 1993, making the new format an immediate success. The station kept the KCBS-FM call letters, but would only quickly identify its call sign once at the top of the hour per FCC station identification requirements. The format would later evolve towards classic rock of the late 1960s, 1970s, and early 1980s, and re-branded itself as "Arrow 93FM, All Rock & Roll Classics" in 1996. In 2005, Infinity Broadcasting (as CBS Radio
2415-440: 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
2484-525: The focus largely on the 1960s. Doo-wop , early rock, Motown , girl groups, Elvis Presley , and the Beatles were the mainstays of the station's music mix. Throughout the 1980s, K-Earth would feature huge weekend specialties, including #1 music over the Labor Day weekend. Every L.A. #1 song would be played in chronological order (utilizing the older KHJ Boss 30, KFWB Fab Forty, and other local charts) from 1955 through 1985. The weekend before would feature
2553-449: 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
2622-413: 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
2691-616: 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 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
2760-459: 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
2829-538: The majority share of the oldies market. On September 10, 1993, at 3 pm, KCBS-FM flipped to a mixed classic rock and classic hits format, and branded itself as "Arrow 93FM, All Rock and Roll Oldies". The moniker "Arrow" stood for "All Rock and Roll Oldies". The new format focused on the late 1960s and the entire 1970s decade with an emphasis on only classic rock oldies, not including adult contemporary hits, Motown , bubblegum , disco or doo-wop . The Arbitron ratings for KCBS-FM went from 18th to 3rd place by
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2898-571: The merger, the FM radio rights to the Los Angeles Rams of the National Football League were moved to KCBS-FM from KSWD, which was sold off as part of the deal when it flipped to contemporary Christian format as KKLQ on November 16, 2017. The Rams broadcasts were FM only, and regular programming was exclusive to the Audacy app during game broadcasts, including in Los Angeles. On March 30, 2021, Entercom rebranded to
2967-541: The number of channels to 100.) On October 31, 1940, the first fifteen construction permits for commercial FM stations were issued, including one to Don Lee Broadcasting System for a station in Los Angeles at 44.5 MHz, which was issued the call sign K45LA. K45LA signed on August 11, 1941, as the first FM station in Los Angeles, broadcasting from a tower atop Mount Lee ; it is the oldest continuously operating FM station in California. Effective November 1, 1943,
3036-499: The oldies audience, KODJ changed its call letters to KCBS-FM and, in early 1993, began playing mostly pre-1965 oldies. KCBS-FM successfully switched to a classic rock format in late 1993 called " Arrow 93 ", but later flipped to adult hits as " Jack FM ". KRTH, by then, focused on the 1964–1969 period with moderate amounts of pre-1964 and 1970s songs each hour. The station remained a competitor with Pasadena's AM oldies station KRLA until 1998, when that station switched formats. KRTH
3105-694: 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"). KRTH KRTH (101.1 FM , "K-Earth 101")
3174-407: The rotation. This process was taken a step further in 2007 with a few early 1980s songs added to the mix by artists such as Hall & Oates , Phil Collins , and Michael Jackson . By the end of 2007, K-Earth had improved its ratings substantially and was once again ranked among the top 10 stations in the Los Angeles market. More importantly from an advertising standpoint, the station was attracting
3243-564: 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
3312-403: The same disease. His death several months later severed KRTH's last link to Boss Radio. "Shotgun" Tom Kelly succeeded Don Steele in afternoon drive that September. KRTH changed hands in 1996 when Infinity was purchased by Westinghouse Broadcasting , which at the time owned CBS , making KRTH and KCBS-FM sister stations. K-Earth continued with its oldies format, adjusting it toward the end of
3381-513: The scandals involving KHJ-TV which forced the former company out of broadcasting. Oldies were a ratings success for KRTH-FM and similar stations across the United States and Canada. In March 1989, another Los Angeles FM oldies station emerged at 93.1 FM under the call sign KODJ, later KCBS-FM , as a direct competitor to KRTH-FM. KODJ/KCBS-FM played oldies from 1955 to 1972 with a heavy focus on pre-1964 oldies. KRTH-FM , which reverted to
3450-413: 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
3519-510: The station began to remove a portion of 1960s music, as it had appealed to a much older audience than was measurable by the ratings system. In addition, most early 1970s hits, as well as soul hits from the late 1960s through the mid-1970s, were eliminated; the playlist now focused on music from 1973 to 1989 (with only a few pre-1973 songs per day). With these changes, ratings rose substantially. In June 2014, CBS transferred Thomas to New York, with Chris Ebbott replacing him as program director. Ebbott
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#17328019026663588-518: The station has no DJs, KCBS-FM will occasionally respond to current events, such as playing all Michael Jackson songs following his death, or spinning a celebratory tune or two following a local sports victory (especially with the Rams). The "voice" of Jack FM is a real person named Howard Cogan. His quips which are heard between songs are created by a team of writers. As Jack became popular, Cogan moved to Los Angeles to record his comments more easily. He
3657-401: The station off-air. By early 2016, KRTH began adding songs from the 1990s into its playlist. On February 2, 2017, CBS Radio announced it would merge with Entercom . The merger was approved on November 9, 2017, and was consummated on November 17. As of 2018, KRTH no longer plays music from the 1960s through the mid-1970s, with its playlist shifting towards hits from the late 1970s through
3726-441: The station's lackluster ratings, the mellow rock format and heritage KNX-FM call letters were returned under the new branding "Quality Rock" in 1986. KNX-FM struggled with low ratings, and was not able to re-capture its original audience. On March 2, 1989, at 12:00 pm, following a day-long stunt with a ticking clock during songs and an announcement from vice president and general manager Charlie Seraphin, an oldies music format
3795-480: 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
3864-403: 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 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
3933-437: Was simulcast on KHJ-FM. From 1968 to 1970, KHJ-FM aired Drake-Chenault 's "Hit Parade" format, an automated mix of older songs and current hits. In 1971, the station carried another Drake-Chenault top 40 format, "Solid Gold Rock And Roll". On October 16, 1972, KHJ-FM switched to what was then called a "gold" format, featuring older hit songs from the past. At the time, this " oldies " format featuring songs from 1953 to 1963
4002-477: Was a bit more uptempo than competing beautiful music stations. In 1973, KNX-FM switched to a mellow rock format, featuring artists airing on other rock stations but choosing softer selections than heard on rivals KLOS and KMET . (Volunteers launched an internet stream recreating the KNX-FM format of the 1973-1983 era in 2019, now calling itself "TheMellowSound.net, a KNX-FM 93 tribute". Another tribute website
4071-427: Was a novel idea since most stations played current music with only a few older songs mixed in. The only local competition in this format was KWOW (1600 AM), a mostly automated station in nearby Pomona . With the switch in format came a new moniker: "K-Earth", named after Earth Day which had debuted to much fanfare two years before. New matching call letters KRTH accompanied the change. The "K-Earth 101" jingle
4140-490: 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
4209-419: Was also introduced at this time; it directly echoed the sound and notes of the jingle from KHJ, the station where many of these "gold" songs had originally been played. (KHJ was still on the air at this point, but was playing current top 40 songs.) In the late 1970s, under program director Bob Hamilton, KRTH added current hits to its oldies playlist—essentially an adult contemporary format. Though current music
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#17328019026664278-409: Was approved on November 9, 2017, and was consummated on November 17. As part of the agreement with CBS, Entercom was given the rights to use the brand and trademarks for KCBS-FM along with sister stations WCBS-AM and WCBS-FM in New York City, KCBS-AM in San Francisco for a 20-year period after which Entercom (or succeeding entity) will be required to relinquish using those call-letters. As part of
4347-488: Was getting picked up in numerous U.S. markets. The Jack format was a break from the heavily niched formats that had developed beginning in the 1970s. Jack was also unusual in that it employed no DJs, and had a much larger playlist than the typical classic hits or classic rock radio station. The Los Angeles incarnation of Jack includes more modern rock titles than most Jack outlets, reflecting the local influence of KROQ-FM during its alternative heyday. Initially, KCBS-FM played
4416-463: Was introduced and the heritage KNX-FM call sign was dropped yet again. (The KNX-FM call letters returned to the Los Angeles airwaves on December 21, 2021, when they were picked up by co-owned 97.1, formerly KNOU.) With the new oldies format, the station switched its call letters to KODJ and the branding changed to "Oldies 93.1". KODJ competed with crosstown oldies rival KRTH , which later came under common CBS Radio ownership when limits were relaxed by
4485-478: Was known at the time) won the licensing rights to brand its adult hits music formatted radio stations as " Jack FM ". This led to yet another format change for KCBS-FM. On March 17, 2005 ( St. Patrick's Day ), after an all-day stunt with music from U2 (as that band is from Ireland), the classic rock format was dropped, as "93.1 Jack FM" debuted in Los Angeles, airing an adult hits format that started in Canada and
4554-403: Was made in the 2000s was the addition of adult contemporary Christmas music during the holiday season from performers such as Mannheim Steamroller , Air Supply , and Barry Manilow . Airing three times an hour, this holiday fare was designed to entice listeners away from AC competitor KOST , which annually shoots to #1 in the ratings with its all-Christmas format. (In years past, K-Earth played
4623-408: Was played to varying degrees through the early 1980s, K-Earth's format remained focused on the past. In 1985, KRTH solidified its oldies format, adopting the motto "Classic Rock and Roll". K-Earth began promoting its "Good Time Oldies" image with frequent TV ads featuring Beach Boys music, classic cars, palm trees, and the ever-present K-Earth jingle. The songs featured were from 1955 to 1978, with
4692-701: Was previously PD at CKFM-FM in Toronto. Also in 2014, Johnny Mann , whose singers have been responsible for KRTH's jingles over the years, died. Additionally, Charlie Van Dyke , who was KRTH's voiceover artist in recent years but more recently has also been the imaging voice of KABC-TV , was replaced as station voiceover with Joe Cipriano , the longtime voice of the Fox Television Network . In August 2015, "Shotgun" Tom Kelly left his afternoon drive position but remained with KRTH in an "ambassador" role, making public appearances and otherwise representing
4761-479: Was sold to Infinity Radio in 1994. From 1992 to 1997, K-Earth was the home of The Real Don Steele and Robert W. Morgan , who were co-workers at KHJ during the 1960s Boss Radio era. In April 1997, Steele announced in a very emotional on-air statement that he had lung cancer, which subsequently led to both his retirement as well as his death by the summer of 1997. Six weeks later, in May 1997, Morgan would grip audiences with his own heartfelt announcement that he had
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