55-581: WPHI-FM (103.9 MHz ) is a commercial radio radio station licensed to Jenkintown, Pennsylvania , and serving the Philadelphia metropolitan area . The station is owned by Audacy, Inc. , simulcasting an all-news radio format with co-owned KYW (1060 AM). Its studios are located in Audacy's corporate headquarters in Center City, Philadelphia . WPHI-FM has an effective radiated power (ERP) of 270 watts, as
110-840: A Class A station. The transmitter tower is in the Roxborough neighborhood of Philadelphia ( 40°02′30.1″N 75°14′10.1″W / 40.041694°N 75.236139°W / 40.041694; -75.236139 ). The station is short-spaced due to adjacent channel interference from WMGM in Atlantic City , WXCY-FM in Havre de Grace, Maryland , and WNNJ in Newton, New Jersey (all located on 103.7 FM), and WAEB-FM in Allentown and WNNK in Harrisburg (both located on 104.1 FM). The station signed on
165-532: A local marketing agreement (LMA) on November 23, and flip it to a simulcast of KYW . Ahead of the change, the "Hip Hop" format and branding moved to WRNB on November 16, and the two stations simulcast for a week. The change in ownership and format took place at midnight on November 23. The swap was consummated on April 20, 2021. The WPHI call letters were retained to prevent competitor re-use (Nielsen's measurement systems no longer require specific callsign verification by panelists). ** = Audacy operates pursuant to
220-494: 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 is s , meaning that one hertz is one per second or the reciprocal of one second . It
275-451: A "big announcement" at 5 p.m. on April 1. At that time, after playing " Keep Your Head to the Sky " by Earth, Wind, & Fire , WRNB flipped to urban oldies as "Old School 100.3." The first song on "Old School" was " Atomic Dog " by George Clinton . The format played Motown , disco , funk , new jack swing , freestyle , and early hip hop from the 1960s to the early 2000s. The new format
330-609: A classic hip hop-leaning rhythmic AC on June 30, 2017. On December 24, 2019, WPHI rebranded as "Hip Hop 103.9". On November 5, 2020, Urban One announced that it would swap WPHI-FM, WHHL and the intellectual property of WFUN-FM in St. Louis , and WTEM in Washington, D.C. to Entercom , in exchange for WBT / WBT-FM , WFNZ and WLNK in Charlotte, North Carolina . Under the terms of the deal, Entercom would take over operations of WPHI-FM under
385-548: 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
440-569: A television sister in WIBF-TV, channel 29 (now WTXF-TV , a station coincidentally owned by the Fox Broadcasting Company). In October 1992, the station was sold by the Fox family to Jarad Broadcasting. On November 9, 1992, at midnight, co-owned WDRE from Garden City, New York , started simulcasting its modern rock programming with WIBF-FM. WIBF's branding was changed to "103.9 WDRE" to match
495-520: A true mainstream radio station in the Philadelphia radio market due to its weak signal, the station gained a cult status. As a result, events like the station's music festival (known as "DREfest") sold out to a crowd of over 25,000 people. In December 1996, Radio One bought WDRE from Jarad, and on December 16, WDRE announced that the station would flip to a then-undisclosed format in February 1997. With
550-427: 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
605-577: Is a commercial radio station licensed to Media, Pennsylvania in the Philadelphia – Delaware Valley radio market . It is owned by Radio One and airs an urban adult contemporary radio format . In afternoon drive time , WRNB carries the syndicated D. L. Hughley Show. WRNB's studios and offices are in the Two Bala Plaza– building on City Line Avenue in Bala Cynwyd . WRNB has an effective radiated power (ERP) of 17,000 watts. The transmitter
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#1733086269125660-490: 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
715-489: Is located in the Roxborough neighborhood of Philadelphia at ( 40°2′36.0″N 75°14′32.0″W / 40.043333°N 75.242222°W / 40.043333; -75.242222 ). The station is short-spaced with two other co-channel FM stations (see See § Signal note below). WRNB broadcasts in the HD Radio hybrid format, with its HD-2 subchannel airing the urban contemporary format that moved from its main signal, and
770-503: 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 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
825-452: 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
880-620: The Fairness Doctrine , refusing to air competing viewpoints. The 100.3 frequency then went silent again for eight years. In 1981, after a seven-year comparative hearing , the FCC awarded the license to the Greater Media Radio Company, owned by Daniel Lerner. The name referred to the station's city of license, Media, and was not associated with the larger Greater Media , Inc., which locally owned WMGK , WPEN and other stations around
935-540: The urban contemporary panel. Mediabase followed suit in 2011 . WPHI-FM's chief rival was WUSL , which had been Philadelphia's long-time Urban Contemporary leader. In fall 2005, former rival personality Colby Colb was hired as the Program Director and afternoon host. For the next few years, 100.3 The Beat enjoyed high ratings, helped by Miss Jones in the morning and Colby Colb in the afternoon. Monie Love and Pooch took over mornings in 2005, with other disc jockeys on
990-479: The "Beat" moniker for "100.3 Philly." Radio One was preparing to make another frequency switch, this time moving WRNB's urban AC format and branding from 107.9 MHz to 100.3 MHz on September 1. WRNB was simulcast on both 100.3 and 107.9 until September 2, when the WPHI call sign moved to 107.9, adopted the former "Beat" format and rebranded as "Hot 107.9." On March 29, 2013, WRNB went jockless and began promoting
1045-484: The "Old School" branding. On November 16, 2020, at 10 am, WRNB absorbed sister station WPHI's urban contemporary format into its own and was rebranded as "100.3 R&B & Hip Hop" (subsequently, WRNB's urban adult contemporary format would move full-time to its HD2 sub-channel). This was a result of Urban One selling said station to Entercom; the two stations simulcasted for a week, as it had been previously announced that WPHI would begin simulcasting KYW ahead of
1100-446: 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
1155-468: 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 ;
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#17330862691251210-552: The HD-3 subchannel airing an urban contemporary gospel format. In 1942, a station broadcasting on 100.3 FM first signed on as KYW-FM, which was licensed to Philadelphia. It was the sister station to KYW , owned by the Westinghouse Electric Corporation . By the late 1940s, KYW-FM moved to 92.5 MHz. The 100.3 frequency remained dark for a decade and a half. In 1962, WXUR-FM began broadcasting, licensed to
1265-547: The New York station. The simulcasting was part of a large effort by Jarad called "The Underground Network", a group of seven stations from across the country simulcasting WDRE. In 1995, the network ceased operations, as WDRE in New York changed its call letters back to WLIR . The cessation of the network then made WIBF-FM in Philadelphia an independent, local modern rock station. WIBF-FM then changed its own call sign to WDRE - "We DaRE to be Different" - to match its branding. WDRE used
1320-549: The U.S. On November 8, 1982, 100.3 FM returned to the air, this time as WKSZ, "Kiss 100," with a soft adult contemporary format. By 1987, Kiss 100 was the No. 1 Arbitron -ranked station among women ages 25 to 54. In the early 1990s, however, the battle for AC listeners heated up, with WEAZ (now WBEB ) becoming the dominant station for soft music in Philadelphia. WKSZ lost ground in the ratings, falling to 17th place in 1992. To improve ratings, WKSZ tried to combine AC and oldies with what
1375-421: The air November 1, 1960. Its original call sign was WIBF-FM and it was owned by Fox Broadcasting, not related to the more recent Fox Broadcasting Company television network. The call letters stood for the station's owners, brothers William and Irwin Fox and their father Benjamin Fox, a local real estate developer. In the 1960s and 1970s, the station featured a format of MOR , big bands , Dixieland jazz and
1430-413: The area's first FM country music show, plus religious and ethnic programs. By the mid-1970s, the station switched to Christian radio and ethnic programming during the day and Spanish-language tropical music at night. The Barry Reisman Show, featuring Jewish music and talk, was broadcast during the afternoon drive time from 1969 through the station's sale in 1992. In 1965, the station picked up
1485-476: 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
1540-440: 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
1595-521: The event. At midnight on February 8, 1997, as the crowd at "Bitterfest" chanted "'D-R-E! 'D-R-E! 'D-R-E!", a lucky (or unlucky) listener was selected to "pull the plug" on WDRE, with the station ending with the first song that started the format: Pearl Jam's "Alive". Two of the WDRE disc jockeys (Preston Eliot, Bret Hamilton) went to Y100 , as did 'DRE Program Director Jim McGuinn, and midday and Sunday night DJ Marilyn Russell (as Promotions Director for Y100). Y100
1650-404: The former Program Director of WPLY , and Mel "Toxic" Taylor, who went on to WYSP . Taylor (formerly of WPST and WIFI ) was the first DJ hired for the only two shows that were live from Philadelphia each week. When WDRE Philadelphia became a local radio station in 1995, talent was hired from within the city (e.g. Bret Hamilton, formerly of WIOQ ) and outside of the city. While WDRE never became
1705-449: 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
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1760-413: 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
1815-454: 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
1870-682: The late 1990s, WPLY leaned towards Modern AC , and would shift towards an active rock lean in 2000. In 2000, the station was bought by Radio One for $ 80 million. Radio One focuses mostly on urban music and didn't plan to program an alternative rock station. The company tried to make a deal to swap formats with Greater Media 's WEJM (now WBEN-FM ), which at the time, ran a rhythmic oldies format called "Jammin Gold," which would have better fit into Radio One's portfolio. The deal fell through, and Radio One continued to run WPLY as an alternative rock station for nearly five years. While ratings had gone down,
1925-464: The pending format flip, the staff at WDRE organized a concert called "Bitterfest", which was to be held at The Electric Factory. The concert featured local acts G Love and the Fun Lovin' Criminals , and was created to celebrate the life of WDRE as a local institution for modern rock. On February 7, 1997, "Bitterfest" was held to a sold-out crowd of over 3,000 people, with all of the WDRE staff present at
1980-674: 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"). WRNB WRNB (100.3 FM )
2035-433: The return of the WPHI call letters to the frequency that originated the call letters. With the change, WPHI's classic hip hop format shifted to urban contemporary; the classic hip hop songs were reduced to just a few per hour, with the station now emphasizing currents and recurrents. This marks the fourth attempt by Radio One to compete against long dominant WUSL . Eight months after WPHI's format switch, WISX flipped to
2090-544: 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
2145-501: The sale's closure, on November 23. With the combined R&B/hip hop format failing to catch on in the market - bottoming out with a 1.0 share in the July 2022 Nielsen Audio ratings (well behind WUSL's 3.6 share), the station ultimately reverted to its previous urban AC format and "100.3 RNB" branding on August 25, 2022. With the shift, Program Director/afternoon host Paris Nicole exited the station after twelve years; Nicole previously served in
2200-454: The same frequency of 100.3 MHz, and calling itself "Z100" since 1983, demanded that WKSZ drop the name to avoid listener confusion. After a brief legal battle, the call sign and name were changed to WPLY, "Y100". The station initially had a slight alternative rock lean, but still played other Top 40 hits, including pop and dance. By early 1995, WPLY evolved into a full-time alternative rock format, which lasted nearly ten years. Through
2255-482: The same position at WPHI and moved over at WRNB with the previous format shift. WRNB is short-spaced to two other co-channel Class B stations: WHTZ Z100 (licensed to serve Newark, New Jersey ) and WBIG-FM Big 100 (licensed to serve Washington, D.C.). The cities WRNB and WHTZ are licensed to serve are only 86 miles apart, while the cities WRNB and WBIG-FM are licensed to serve are only 112 miles apart. The minimum distance between two Class B stations operating on
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2310-409: 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
2365-470: The slogan "Philly's Modern Rock". " Alive " by Pearl Jam was the first song played on WDRE. The station helped launch the careers of several famous disc jockeys and broadcasters. They include Preston Elliot and Steve Morrison of the Preston and Steve morning show on WMMR , Bret Hamilton of WCAU-TV , Marilyn Russell (formerly of Y100 , WXPN , WMGK , and WOGL ), Jim McGuinn (also known as Rumor Boy),
2420-413: 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
2475-435: The station called the "50/50 Mix"; however, this failed to turn ratings around, and in 1993, WKSZ returned to a playlist of AC love songs. On March 15, 1993, at 6 am, with the station still struggling, WKSZ became "Z100", switching to a adult top 40 format. The flip came three days after Eagle 106 gave up Top 40 and switched to smooth jazz , creating an opening which WKSZ hoped to fill. New York's WHTZ , located on
2530-459: The station including Micheal Shawn, DJ Touchtone, DJ Jay Ski, Megatron, DJ Bent Rock, Moshay, Toshamakia, DJ JDS, Laiya and Hansoul. In late 2010, WPHI-FM became the Philadelphia home of the Star and Buc Wild Morning Show, syndicated from New York City. The show had actually been heard in Philadelphia in early 2006 on WUSL but had drawn some controversy and was dropped. On August 27, 2011 , WPHI dropped
2585-419: The station ran without DJs throughout the day until August 2007. In late August, the addition of performer Lonnie Hunter from Chicago was named the midday personality along with Sheik Meah. Motivational speaker Les Brown was added on Sundays from 7–9pm. In September, Pastor Alan E. Waller joined the staff to do a Saturday morning show from 10–11:00 and two more weekend shows were added. The "Holy Hip-Hop Show"
2640-491: The station still was moderately successful. On February 24, 2005 , at 11:50 pm, WPLY ended its alternative rock format with " Alive " by Pearl Jam (which was also the first and last song on WDRE ). WPHI, an urban contemporary station at 103.9 MHz, also owned by Radio One and known as "103.9 The Beat," moved to 100.3 FM. The station at 103.9, in turn, flipped to urban gospel as WPPZ-FM , "Praise 103.9." By 2006 , Nielsen BDS / Radio & Records moved WPHI to
2695-599: The suburban community of Media. Its effective radiated power was 4,200 watts, simulcasting the Christian programming of its AM sister station 690 WXUR (now WPHE in Phoenixville, Pennsylvania ). WXUR-AM-FM were owned by Carl McIntire , a Bible Presbyterian minister. In 1973, the Federal Communications Commission (FCC) revoked the licenses for both stations, with the FCC ruling that WXUR-AM-FM violated
2750-480: 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
2805-414: The urban contemporary panel. Mediabase followed suit in 2011 , completing the rhythmic to urban shift. On February 27, 2005, Radio One moved the "Beat" format to the 100.3 frequency, which was formerly Y100 . 103.9 then flipped to urban gospel , branded as "Praise 103.9". The call sign was changed to WPPZ-FM on March 3. Except for "The Yolanda Adams Morning Show" and CeCe McGhee weekday afternoons,
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#17330862691252860-471: Was added on Saturdays from 7–9pm and a Christian dating show was added on Sundays from 9–11pm. WPPZ's staff includes Lonnie Hunter, Brother Marcus, and CeCe Magee. Former DJs include Church Lady (2007–2008), Ed Long (2005–2007), CoCo Brother (2011–2013), and Les Brown and B.I.G. C.I.T.Y. (2008–2009; 2009–present). On September 27, 2016, at midnight, WPPZ and WPHI swapped frequencies, with "Praise" moving to 107.9 FM, and "Boom" moving to 103.9 FM. It also marked
2915-482: 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
2970-479: Was also bought out by Radio One in 2000, and flipped in 2005 to urban contemporary . On February 10, 1997, after a weekend of stunting with classic soul music, the station flipped to urban contemporary , branded as "Philly 103-9". The call letters were soon changed to WPHI. When the station rebranded as "The Beat" in April 2002, it shifted to rhythmic top 40 . By 2006 , Radio & Records / Nielsen BDS moved it to
3025-408: Was designed to better compete with the dominant Urban AC station in Philadelphia, WDAS-FM . In November 2014, sister station WPHI-FM moved to a classic hip-hop format. In response, WRNB re-added some current music, although the station continued to focus on older urban hits. On October 6, 2016, WRNB returned to urban adult contemporary music, once more calling itself "100.3 WRNB," and dropping
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