75-460: WPLN-FM (90.3 MHz ), is a non-commercial public radio station in Nashville, Tennessee . It airs a news, talk and information radio format and is owned by Nashville Public Radio along with sister station WNXP . The station's studios and offices are located on Mainstream Drive north of downtown Nashville, which are considered among the finest radio production facilities in the U.S. WPLN-FM
150-504: A West Coast 25,000-square-foot (2,300 m ) production facility, NPR West , which opened in Culver City , Los Angeles County, California , in November 2002. With room for up to 90 employees, it was established to expand its production capabilities, improve its coverage of the western United States , and create a backup production facility capable of keeping NPR on the air in the event of
225-491: A primary entry point for the Emergency Alert System . Its content is also available on-demand online, on mobile networks, and in many cases, as podcasts . Several NPR stations also carry programs from British public broadcaster BBC World Service . The organization's legal name is National Public Radio and its trademarked brand is NPR ; it is known by both names. In June 2010, the organization announced that it
300-403: A religious broadcasting philosophy or be used for classroom distance learning programming. Each member station receives one vote at the annual NPR board meetings—exercised by its designated Authorized Station Representative ("A-Rep"). To oversee the day-to-day operations and prepare its budget, members elect a board of directors. The board was previously composed of ten A-Reps, five members of
375-456: A voluntary buyout plan to reduce staff by 10 percent and return NPR to a balanced budget by the 2015 fiscal year . In December 2018, The Washington Post reported that between 20 and 22 percent of NPR staff was classified as temps , while this compares to about five percent of a typical for-profit television station. Some of the temporary staff members told the newspaper the systems were "exploitative", but NPR's president of operations said
450-519: A catastrophe in Washington, D.C. In November 2003, NPR received $ 235 million from the estate of the late Joan B. Kroc , the widow of Ray Kroc , founder of McDonald's Corporation . This was the largest monetary gift ever to a cultural institution. In 2004, the Kroc gift increased NPR's budget by over 50% to $ 153 million. Of the money, $ 34 million was deposited in its endowment . The endowment fund before
525-406: A memo that NPR needed to reduce spending by $ 10 million during the current fiscal year due to a drop in revenue from sponsors. The amount is approximately three percent of the organization's annual budget. In February 2023, Lansing announced in a memo that the network would be laying off approximately 10 percent of the workforce due to reduced advertising revenue. He said the annual operating budget
600-476: A mixture of folk and alternative rock shows. WPLN-FM broadcasts using HD Radio technology. Its HD-2 digital subchannel offers the BBC World Service and co-owned 91.1 WNXP plays adult alternative music . Nashville Public Radio holds periodic on-the-air fundraisers and seeks donations on its website to support the services. WPLN began as a modest extension of Nashville Public Library . It signed on
675-548: 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
750-498: A product or "promote the goods and services" of for-profit entities. These restrictions apply only to radio broadcasts and not NPR's other digital platforms. When questioned on the subject of how corporate underwriting revenues and foundation grants were holding up during the recession, in a speech broadcast on C-SPAN before the National Press Club on March 2, 2009, then president and CEO Vivian Schiller stated: "underwriting
825-453: A simulcast of its AM sister station, WPLN (1430 AM) . XPoNential Radio was previously heard on WPLN HD2 overnights, from 6 p.m. to 6 a.m. As mentioned above, in November 2020, classical music replaced all the previous programming on HD-2, music that was heard since 2011 on the former WFCL. The HD-3 channel initially carried much of the same programming as WPLN (AM). In June 2011, the HD-3 subchannel
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#1732863326461900-713: Is simulcast on two low-powered repeaters on the fringes of the Middle Tennessee area: WHRS (91.7 FM ) in Cookeville and WTML (91.5 FM) in Tullahoma . WPLN-FM has an effective radiated power of 80,000 watts . The transmitter is on Johnson Chapel Road West in Brentwood, Tennessee , near the Little Harpeth River . The signal reaches most of Middle Tennessee and some counties in southern Kentucky . WPLN-FM shares
975-735: Is almost exactly average in terms of the sex of listeners (49% male, 51% female). NPR listeners have higher incomes than average (the 2012 Pew study showed that 43% earn over $ 75,000, 27% earn between $ 30,000 and $ 75,000). A 2012 Pew Research Center survey found that the NPR audience leans Democratic (17% Republican , 37% independent , 43% Democratic) and politically moderate (21% conservative, 39% moderate, 36% liberal). A late 2019 survey, also by Pew, found that NPR's audience overwhelmingly leaned Democratic. 87% of those surveyed identified as Democrats, or leaning Democratic, and 12% were Republicans. A Harris telephone survey conducted in 2005 found that NPR
1050-499: 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), 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
1125-707: Is an American public broadcasting organization headquartered in Washington, D.C. , with its NPR West headquarters in Culver City, California . It serves as a national syndicator to a network of more than 1,000 public radio stations in the United States. It differs from other non-profit membership media organizations, such as the Associated Press , in that it was established by an act of Congress. Funding for NPR comes from dues and fees paid by member stations, underwriting from corporate sponsors, and annual grants from
1200-478: Is approximately $ 300 million, and the gap will likely be between $ 30 and $ 32 million. In January 2024, NPR's board named former Wikimedia Foundation CEO Katherine Maher its new CEO, effective late March. NPR is a membership organization. Member stations are required to be non-commercial or non-commercial educational radio stations; have at least five full-time professional employees; operate for at least 18 hours per day; and not be designed solely to further
1275-469: Is broadcast at noon and repeated at 7 p.m. Weekends feature hour-long public radio specialty shows, including Wait, Wait, Don't Tell Me! , Snap Judgment , Radio Lab , The New Yorker Radio Hour , Hidden Brain , The Splendid Table , You Bet Your Garden , Freakonomics Radio , TED Radio Hour and Travel with Rick Steves As is the case with other similarly-formatted NPR affiliates, WPLN-FM only broadcasts music programming on Saturday evenings, with
1350-441: Is down from its 2017 high of 37.7 million, but still well above its total of 20.9 million in 2008. According to 2015 figures, 87% of the NPR terrestrial public radio audience and 67% of the NPR podcast audience is white. According to the 2012 Pew Research Center 2012 News Consumption Survey, NPR listeners tend to be highly educated, with 54% of regular listeners being college graduates and 21% having some college. NPR's audience
1425-541: Is down, it's down for everybody; this is the area that is most down for us, in sponsorship, underwriting, advertising, call it whatever you want; just like it is for all of media." Hosts of the NPR program Planet Money stated the audience is indeed a product being sold to advertisers in the same way as commercial stations, saying: "they are not advertisers exactly but, they have a lot of the same characteristics; let's just say that." According to NPR's 2022 data, 30.7 million listeners tuned into its programs each week. This
1500-472: Is found below. On September 8, 2009, WPLN-FM discontinued its 9 a.m. to 3 p.m. classical music programming in favor of a block of news-and-talk programs from NPR and other providers. That action reflected a trend in medium-sized markets towards orienting public radio schedules in favor of more popular (and perhaps more accessible) political and features programming and away from classical music, whose audiences are aging, according to market researchers. However,
1575-483: Is measured by Nielsen in both Diary and PPM (people meter) markets. NPR stations are frequently not included in "summary level" diary data used by most advertising agencies for media planning. Data on NPR listening can be accessed using "respondent level" diary data. Additionally, all radio stations (public and commercial) are treated equally within the PPM data sets making NPR station listenership data much more widely available to
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#17328633264611650-501: Is now WNPT . In 2002, Nashville Public Radio purchased an existing Medium Wave station to broadcast NPR and local news, talk, and public affairs programs for which the FM did not originally have time on its schedule. The new WPLN-HD2 and HD3 have given Middle Tennessee residents even more choices of music and spoken-word shows. For more information, see WYGI . In early 2006, WPLN-FM began broadcasting with HD Radio technology. More information
1725-473: 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
1800-452: 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
1875-550: The Association of Public Radio Stations . Morning Edition premiered on November 5, 1979, first hosted by Bob Edwards . NPR suffered an almost fatal setback in 1983 when efforts to expand services created a deficit of nearly $ 7 million (equivalent to $ 19 million in 2022 dollars). After a Congressional investigation and the resignation of NPR's then-president Frank Mankiewicz , the Corporation for Public Broadcasting agreed to lend
1950-602: The Public Broadcasting Act of 1967 . This act was signed into law by President Lyndon B. Johnson , and established the Corporation for Public Broadcasting , which also created the Public Broadcasting Service (PBS) for television in addition to NPR. A CPB organizing committee under John Witherspoon first created a board of directors chaired by Bernard Mayes . The board then hired Donald Quayle to be
2025-630: The TED Radio Hour routinely made the iTunes Top Podcasts list. Ken Stern became chief executive in September 2006, reportedly as the "hand-picked successor" of CEO Kevin Klose, who gave up the job but remained as NPR's president; Stern had worked with Klose at Radio Free Europe . On December 10, 2008, NPR announced that it would reduce its workforce by 7% and cancel the news programs Day to Day and News & Notes . The organization indicated this
2100-416: The tower with other Nashville FM stations: WRLT , WKDF and WNRQ . It has broadcast from that site since 1984. WPLN-FM offers nationally syndicated public radio programs with local news updates. Weekdays feature Morning Edition , All Things Considered , Fresh Air with Terry Gross , 1A , Here and Now and overnight, the BBC World Service . This Is Nashville, a local weekday interview show,
2175-446: 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
2250-505: The 1970s and early 1980s, the majority of NPR funding came from the federal government. Steps were taken during the Reagan administration in the 1980s to completely wean NPR from government support, but the 1983 funding crisis forced the network to make immediate changes. According to CPB , in 2009 11.3% of the aggregate revenues of all public radio broadcasting stations were funded from federal sources, principally through CPB; in 2012 10.9% of
2325-468: 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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2400-563: The NPR Foundation Chair, and the NPR President & CEO. Terms are for three years and are staggered such that some stand for election every year. As of January 2024 , the board of directors of NPR included the following members: The original purposes of NPR, as ratified by the board of directors, are the following: The Public Editor responds to significant listener queries, comments and criticisms. The position reports to
2475-744: The Spotify Audience Network platform within NPR programming, when NPR has empty slots available they otherwise were unable to sell to other advertisers directly. In contrast with commercial broadcasting , NPR's radio broadcasts do not carry traditional commercials, but has advertising in the form of brief statements from major sponsors which may include corporate slogans , descriptions of products and services, and contact information such as website addresses and telephone numbers . These statements are called underwriting spots and, unlike commercials, are governed by specific FCC restrictions in addition to truth in advertising laws; they cannot advocate
2550-564: The afternoon All Things Considered , both carried by most NPR member stations, and among the most popular radio programs in the country. As of March 2018, the drive-time programs attract an audience of 14.9 million and 14.7 million per week, respectively. NPR manages the Public Radio Satellite System , which distributes its programs and other programming from independent producers and networks such as American Public Media and Public Radio Exchange , and which also acts as
2625-578: The air on December 17, 1962. The studios were in the Richland Park library branch on Charlotte Avenue in West Nashville. It broadcast a limited schedule, almost entirely classical music , and only on Mondays through Fridays. The power was limited and the station was only heard in and around the city of Nashville proper. A year later, Nashville and Davidson County merged to form a metropolitan government . The library, and with it WPLN, became an arm of
2700-400: The area began in 1975. Schedule and programming expansion continued at a steady pace throughout the 1980s and 1990s, while WPLN's physical plant did not expand beyond a block of rooms in the library building. In order to rectify the space shortage and provide more extensive services to the community than was possible under the budgetary and bureaucratic constraints of the public library system,
2775-476: 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
2850-671: The board of directors on the needs of the listening area. In addition to the main FM channel, WPLN now has two digital multicast stations: 90.3 FM HD-2 and 90.3 FM HD-3. Initially, 90.3 HD-2 featured primarily classical music and music programs, such as The World Cafe and Echoes . In June 2011, following the launch of Classical 91 One, 90.3 HD-2 switched to carrying time-shifted programming from WPLN's main channel. On May 22, 2014, after WPLN discontinued WRVU from its HD3 channel, and moved XPoNential Radio from its HD2 channel, to broadcasting full-time on its HD3 channel, WPLN replaced its time-shifted programming from WPLN's main channel with
2925-485: The corner of North Capitol Street NE and L Street NW—is in the burgeoning NoMa neighborhood of Washington. The first show scheduled to be broadcast from the new studios was Weekend Edition Saturday . Morning Edition was the last show to move to the new location. In June 2013 NPR canceled the weekday call-in show Talk of the Nation . In September 2013, certain of NPR's 840 full- and part-time employees were offered
3000-461: The current system was in place because the station is a "media company that strives to be innovative and nimble." In December 2018, NPR launched a new podcast analytics technology called Remote Audio Data (RAD), which developer Stacey Goers described as a "method for sharing listening metrics from podcast applications straight back to publishers, with extreme care and respect for user privacy." In late November 2022, CEO John Lansing told staffers in
3075-784: The debt. Delano Lewis , the president of C&P Telephone , left that position to become NPR's CEO and president in January 1994. Lewis resigned in August 1998. In November 1998, NPR's board of directors hired Kevin Klose , the director of the International Broadcasting Bureau , as its president and chief executive officer. September 11th attacks made it apparent in a very urgent way that we need another facility that could keep NPR going if something devastating happens in Washington. Jay Kernis, NPR's senior VP for programming NPR spent nearly $ 13 million to acquire and equip
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3150-468: The demand for the spoken-word programs grew to the point that station officials decided to acquire the Vanderbilt University -owned student station WRVU and convert it into a full-time classical music station, WFCL , on 91.1 FM, on June 7, 2011. WPLN thereafter became a full-time news-and-talk station, with feature programming on weekends. Beginning on November 30, 2020, the classical music on
3225-493: The direction of the organization", including issues NPR's member station managers had had with NPR's expansion into new media "at the expense of serving" the stations that financially support NPR. As of 2009, corporate sponsorship comprised 26% of the NPR budget. In October 2010, NPR accepted a $ 1.8 million grant from the Open Society Institute . The grant is meant to begin a project called Impact of Government that
3300-440: 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
3375-530: The federally funded Corporation for Public Broadcasting (CPB). In 2009, member stations derived 6% of their revenue from federal, state and local government funding, 10% of their revenue from CPB grants, and 14% of their revenue from universities. NPR receives a small number of competitive grants from CPB and federal agencies like the Department of Education and the Department of Commerce. This funding amounts to less than 1% of revenues. In 2011, NPR announced
3450-527: The first president of NPR with 30 employees and 90 charter member local stations, and studios in Washington, D.C. NPR aired its first broadcast on April 20, 1971, covering United States Senate hearings on the ongoing Vietnam War in Southeast Asia . The afternoon drive-time newscast All Things Considered premiered on May 3, 1971, first hosted by Robert Conley . NPR was primarily a production and distribution organization until 1977, when it merged with
3525-540: The general public, and the chair of the NPR Foundation. On November 2, 2015, NPR Members approved a change in the NPR Bylaws to expand the board of directors to 23 directors, consisting of 12 Member Directors who are managers of NPR Member stations and are elected to the board by their fellow Member stations, 9 Public Directors who are prominent members of the public selected by the board and confirmed by NPR Member stations,
3600-523: The gift totaled $ 35 million. NPR will use the interest from the bequest to expand its news staff and reduce some member stations' fees. The 2005 budget was about $ 120 million. In August 2005, NPR entered podcasting with a directory of over 170 programs created by NPR and member stations. Users downloaded NPR and other public radio podcasts 5 million times by November of that year. Ten years later, by March 2015, users downloaded podcasts produced only by NPR 94 million times, and NPR podcasts like Fresh Air and
3675-449: 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
3750-413: 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
3825-616: 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
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#17328633264613900-516: 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
3975-686: The library board decided, in 1995, to begin proceedings to release the station to an independent community board. The public library relinquished control of WPLN-FM on October 1, 1996, to a group known as "Nashville Public Radio". The station eventually moved out of the library into a modern studio in the Metrocenter area on May 24, 1998. The success of this move may have prompted the Metropolitan Nashville-Davidson County school system, which operated public television outlet WDCN (channel 8), to follow suit three years later. That station
4050-447: The main channel of 91.1 FM ended. WFCL became WNXP (with the call sign actually having changed in early October) and classical programming was replaced by an eclectic music format, largely revolving around the adult album alternative genre. Classical music moved to the HD-2 signal. WPLN is governed by a self-perpetuating board of directors, with a separate board of local residents who advise
4125-423: The media planning community. NPR's signature morning news program, Morning Edition , is the network's most popular program, drawing 14.63 million listeners a week, with its afternoon newsmagazine, All Things Considered , a close second, with 14.6 million listeners a week according to 2017 Nielsen ratings data. Arbitron data is also provided by Radio Research Consortium , a non-profit corporation which subscribes to
4200-523: The network money in order to stave off bankruptcy. In exchange, NPR agreed to a new arrangement whereby the annual CPB stipend that it had previously received directly would be divided among local stations instead; in turn, those stations would support NPR productions on a subscription basis. NPR also agreed to turn its satellite service into a cooperative venture (the Public Radio Satellite System ), making it possible for non-NPR shows to get national distribution. It took NPR approximately three years to pay off
4275-410: The new structure. WPLN was one of only a few non-commercial FM licenses held by a public library system in the U.S. In most cases, libraries usually operate radio frequencies only for radio-reading services for the blind and visually impaired, signals that are available only on special receivers. In 1965, the library moved the station into the then-newly constructed main library downtown. By that time,
4350-525: The president and CEO John Lansing. In April 2020, Kelly McBride became the Public Editor for NPR. In 2020, NPR released a budget for FY21 anticipating revenue of $ 250 million, a slight decrease from the prior year due to impacts of COVID-19. The budget anticipated $ 240 million in operating expenses, plus additional debt service and capital costs that lead to a cash deficit of approximately $ 4 million. The budget included $ 25 million in budget cuts. During
4425-459: The publicly funded Corporation for Public Broadcasting . Most of its member stations are owned by non-profit organizations , including public school districts , colleges , and universities . NPR operates independently of any government or corporation, and has full control of its content. NPR produces and distributes both news and cultural programming. The organization's flagship shows are two drive-time news broadcasts: Morning Edition and
4500-722: 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"). National Public Radio National Public Radio ( NPR , stylized as npr )
4575-562: The revenues for Public Radio came from federal sources. In 2010, NPR revenues totaled $ 180 million, with the bulk of revenues coming from programming fees, grants from foundations or business entities, contributions and sponsorships . According to the 2009 financial statement, about 50% of NPR revenues come from the fees it charges member stations for programming and distribution charges. Typically, NPR member stations receive funds through on-air pledge drives , corporate underwriting, state and local governments, educational institutions, and
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#17328633264614650-413: The roll-out of their own online advertising network , which allows member stations to run geographically targeted advertisement spots from national sponsors that may otherwise be unavailable to their local area, opening additional advertising-related revenue streams to the broadcaster. Center Stage , a mix of native advertising and banner ad featured prominently on the NPR homepage, above-the-fold,
4725-544: 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
4800-455: The simulcast of WPLN (AM) moved to the HD-3 subchannel of WPLN-FM, replacing XPoNential Radio. These multicast stations can be heard using an HD Radio receiver. 90.3 HD-2 and 90.3 HD-3 can also be streamed on the internet through WPLN's website. Hertz 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
4875-413: 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
4950-553: The station had begun operating a full seven days a week. The station was one of the 73 charter members of National Public Radio in 1970. It was one of the first public radio stations in The South to join the network. The station's website claims it joined NPR in 1968, but this is incorrect; NPR was not founded until two years later. In 1972, WPLN began broadcasting in stereo and at a full 100,000 watts of power. A "Talking Library" subchannel for blind (and visually impaired) residents of
5025-480: 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
5100-403: 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
5175-508: Was "making a conscious effort to consistently refer to ourselves as NPR on-air and online" because NPR is the common name for the organization and its radio hosts have used the tag line "This ... is NPR" for many years. National Public Radio remains the legal name of the group, however, as it has been since 1970. NPR replaced the National Educational Radio Network on February 26, 1970, following Congressional passage of
5250-482: 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
5325-505: Was in response to a rapid drop in corporate underwriting in the wake of the economic crisis of 2008 . In the fall of 2008, NPR programming reached a record 27.5 million people weekly, according to Arbitron ratings figures. NPR stations reach 32.7 million listeners overall. In March 2008, the NPR Board announced that Stern would be stepping down from his role as chief executive officer, following conflict with NPR's board of directors "over
5400-456: Was intended to add at least 100 journalists at NPR member radio stations in all 50 states by 2013. The OSI has made previous donations but does not take on-air credit for its gifts. In April 2013, NPR moved from its home of 19 years (635 Massachusetts Avenue NW) to new offices and production facilities at 1111 North Capitol Street NE in a building adapted from the former C&P Telephone Warehouse and Repair Facility . The new headquarters—at
5475-530: Was launched in 2013. The launch partner for Center Stage was Squarespace . In 2014, NPR CEO Jarl Mohn said the network would begin to increase revenue by having brands NPR views as more relevant to the audience underwrite NPR programs and requesting higher rates from them. For the year ended September 30, 2018, total operating revenues were $ 235 million, increasing to almost $ 259 million by September 2019. In 2023, Current reported that NPR partnered with Spotify to run targeted advertisements sold through
5550-485: Was temporarily silenced. On September 1, 2011, at noon, 90.3 HD-3 returned to the air, returning the college alternative format of Vanderbilt University's WRVU to the Nashville airwaves. This lasted until May 22, 2014, when WPLN discontinued WRVU from its HD3 signal (due to low ratings) and replaced it with XPoNential Radio. WRVU's programming is now solely available online, with no terrestrial broadcasting. Beginning in 2020,
5625-450: Was the most trusted news source in the United States. In 2014, Pew reported that, of adults who had heard of NPR, 55% of those polled trusted it; this was a similar level of listener trust as CNN , NBC , and ABC . NPR stations generally subscribe to the Nielsen rating service , but are not included in published ratings and rankings such as Radio & Records . NPR station listenership
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