KYW () is a commercial AM radio station licensed to serve
Philadelphia, Pennsylvania
Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...
. It is one of the oldest continuously operating radio stations in the United States, originating in Chicago before moving to Philadelphia in 1934. KYW's unusual history includes its
call sign
In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally as ...
of only three letters, beginning with a K, rare for a station in the Eastern United States. It broadcasts an
all-news radio
All-news radio is a radio format devoted entirely to the discussion and broadcast of news.
All-news radio is available in both local and radio syndication, syndicated forms, and is carried on both major US satellite radio networks. All-news sta ...
format and is branded as "KYW Newsradio". KYW serves as the flagship station of
Audacy, Inc. KYW's studios are co-located within Audacy's corporate headquarters in
Center City Philadelphia and its
transmitter
In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna (radio), antenna with the purpose of sig ...
and two-tower
directional antenna
A directional antenna or beam antenna is an antenna that radiates or receives greater radio wave power in specific directions. Directional antennas can radiate radio waves in beams, when greater concentration of radiation in a certain directio ...
array are located in
Lafayette Hill, Pennsylvania.
KYW is a 50,000–watt
class A clear channel station. It is one of two clear-channel stations in Philadelphia, the other being sister station
WPHT
WPHT (1210 AM broadcasting, AM) is a commercial radio station in Philadelphia, Pennsylvania. The station broadcasts a talk radio radio format, format and is owned by Audacy, Inc. Its studios are in Audacy's corporate headquarters on Market Stree ...
. With a good radio receiver, its nighttime signal can be heard in much of the Eastern United States and Eastern Canada, however, it restricts its signal towards the Southwest United States to protect
XECPAE-AM in Mexico City, which shares Class A status on
AM 1060. The station's signal is restricted towards the Northeast United States to protect the signal of
WEPN in New York City, which is one frequency away at
1050 AM. KYW Newsradio's programming is also available via a
simulcast on
sister station
In broadcasting, sister stations or sister channels are radio or television stations operated by the same company, either by direct ownership or through a management agreement.
Radio sister stations will often have different formats, and somet ...
103.9
WPHI-FM and the HD2 subchannel of sister station 94.1
WIP-FM.
History
Origin in Chicago (1921)
In November 1920, the
Westinghouse Electric & Manufacturing Company established its first broadcasting station,
KDKA, located at its plant in
East Pittsburgh, Pennsylvania, to promote the sales of its radio receivers. This initial station proved successful, so in 1921 the company developed plans to set up additional stations in major population centers, including WJZ in
Newark, New Jersey
Newark ( , ) is the List of municipalities in New Jersey, most populous City (New Jersey), city in the U.S. state of New Jersey, the county seat of Essex County, New Jersey, Essex County, and a principal city of the New York metropolitan area. ...
(now
WABC in New York City), and
WBZ, originally in
Springfield, Massachusetts
Springfield is the most populous city in Hampden County, Massachusetts, United States, and its county seat. Springfield sits on the eastern bank of the Connecticut River near its confluence with three rivers: the western Westfield River, the ea ...
, and now in
Boston
Boston is the capital and most populous city in the Commonwealth (U.S. state), Commonwealth of Massachusetts in the United States. The city serves as the cultural and Financial centre, financial center of New England, a region of the Northeas ...
. It also wanted to start a station in Chicago.
The Westinghouse station was first licensed on November 15, 1921, as Chicago's first broadcasting outlet, with the randomly assigned call letters of KYW. At first, it was jointly operated by Westinghouse and
Commonwealth Edison, with Westinghouse later taking over as sole operator. Through the financial support of
Samuel Insull, and the cooperation of
Mary Garden, director general of the
Chicago Opera Company, KYW's initial broadcasts consisted of the opera company's entire six-day-a-week winter season schedule. Ten microphones were installed across the
Chicago Civic Auditorium stage, with equipment for switching between them as needed. After the close of the opera season, KYW installed a studio in the Commonwealth Edison building, and began producing additional programming. By fall of 1922 the station was operating for twelve hours a day.
In 1927, Westinghouse affiliated its four radio stations (KYW, KDKA in Pittsburgh, WBZ in Springfield and WBZA in Boston) with the
National Broadcasting Company's (NBC)
Blue Network, originating from WJZ in New York City, which had been transferred from Westinghouse to the
Radio Corporation of America (RCA) in 1923. Westinghouse had been a founding partner of RCA, NBC's original parent company.

In 1923, Westinghouse established a station,
KFKX in
Hastings, Nebraska
Hastings is a List of cities in Nebraska, city in and the county seat of Adams County, Nebraska, Adams County, Nebraska, United States. The population was 25,152 at the 2020 United States census, 2020 census, making it the List of cities in Neb ...
, located near the center of the country. The station was designed to serve a dual purpose, of providing an agricultural service, and for testing the practicality of using shortwave transmitters to link together radio networks, with KFKX receiving much of its programming by shortwave from KDKA in Pittsburgh. In 1927 the project was abandoned, although it was announced that the KFKX programming was being consolidated with KYW. Westinghouse now controlled two stations in addition to KYW in the Chicago area: KFKX and WEBH. On September 1, 1928, the
Federal Radio Commission
The Federal Radio Commission (FRC) was a government agency that regulated United States radio communication from its creation in 1927 until 1934, when it was succeeded by the Federal Communications Commission (FCC). The FRC was established by ...
(FRC) ordered that their operations should be consolidated. WEBH was deleted, and the other two stations were merged, with a dual call letter assignment of KYW-KFKX, although the latter call sign would be rarely if ever used after 1930.
In 1929, KYW's transmitter was moved from the top of Chicago's
Congress Hotel to west suburban
Bloomingdale Township.
[History Cards for KYW](_blank)
fcc.gov. Retrieved March 16, 2020.
On May 15, 1933, after the FRC requested that stations using only one of their assigned call letters drop those that were no longer in regular use, KFKX was eliminated and the station reverted to just KYW.
Move to Philadelphia (1934)
Under the provisions of the FRC's
General Order 40, a sweeping reallocation of station frequency assignments was implemented on November 11, 1928. KYW was assigned to the
clear channel frequency of 1020 kHz, but the assignment caused two major problems. KYW's signal on the new frequency experienced difficulties in covering the entire city of Chicago. A
relay transmitter, KYWA, was set up in late 1928, although it was no longer needed by the spring of 1930. A second issue was that, under the provisions of the "
Davis Amendment", eight clear channel frequencies were to be allocated to each of five national regions. Chicago was located in Region 4, while the reallocation provisions had reserved 1020 kHz for use in Region 2, a grouping of mid-Atlantic states.
Westinghouse fought a long legal battle, attempting to keep KYW operating as a clear channel station on 1020 in Chicago. Finally it proposed moving the station to a Region 2 location, settling on Philadelphia.
["The KYW Story"](_blank)
(talk given September 24, 1975, by Joseph Baudino to the Philadelphia Broadcast Pioneers). However, numerous other stations made alternative proposals to be assigned this allocation, and the matter was placed in the hands of an FRC examiner, who held hearings in July 1932 to sort through 23 conflicting applications from 16 stations. Examiner Pratt's recommendation concluded that KYW's willingness to move to Philadelphia was the best possible outcome.
After broadcasting its last program in Chicago on December 2, 1934, KYW aired its debut Philadelphia program the next day. Westinghouse used the studios and sales operations of WCAU. The move made KYW the easternmost U.S. radio station with a
call sign
In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally as ...
beginning with "K". When KYW moved to Philadelphia, it changed from NBC Blue to
NBC Red, predecessor of modern-day NBC, an affiliation it maintained during the remainder of the 1930s and throughout the 1940s; KYW was thus unaffected when, in 1942, the
Federal Communications Commission
The Federal Communications Commission (FCC) is an independent agency of the United States government that regulates communications by radio, television, wire, internet, wi-fi, satellite, and cable across the United States. The FCC maintains j ...
(FCC) compelled RCA to divest itself of one of its two radio networks, resulting in the divestiture of the NBC Blue network (which later became the
American Broadcasting Company
The American Broadcasting Company (ABC) is an American Commercial broadcasting, commercial broadcast Television broadcaster, television and radio Radio network, network that serves as the flagship property of the Disney Entertainment division ...
). In mid-May 1938, KYW moved to new studios at 1619
Walnut Street in Center City.
On March 29, 1941, KYW's clear channel assignment was shifted from 1020 to 1060 kHz, its current frequency, as part of a nationwide adjustment of assignments engineered by the
North American Regional Broadcasting Agreement (NARBA). In 1942, KYW added an FM station at 45.7 MHz, W57PH. It largely simulcast KYW's programming and later moved to 92.5 MHz as KYW-FM when the FM dial was shifted. Development of FM radio was slow and Westinghouse decided to shut down KYW-FM in mid-1954; the equipment was donated to the Delaware Valley Educational Television Corporation and the Philadelphia Board of Education.
KYW acquired a television counterpart in late February 1953, when Westinghouse bought WPTZ (channel 3), the nation's third commercial television station and NBC's second television affiliate, from
Philco
Philco (an acronym for Philadelphia Battery Company) is an American electronics industry, electronics manufacturer headquartered in Philadelphia. Philco was a pioneer in battery, radio, and television production. In 1961, the company was purchase ...
.
KYW Cleveland/WRCV Philadelphia (1956–1965)
In June 1955 Westinghouse agreed to trade KYW and WPTZ to NBC in exchange for NBC's
Cleveland
Cleveland is a city in the U.S. state of Ohio and the county seat of Cuyahoga County. Located along the southern shore of Lake Erie, it is situated across the Canada–U.S. maritime border and approximately west of the Ohio-Pennsylvania st ...
properties,
WTAM-AM-
FM and
WNBK television; Westinghouse also received $3 million in cash compensation. The main impetus for the trade was NBC's desire to acquire an
owned-and-operated television station in the fourth-largest American television market. NBC had to receive a waiver for the swap because KYW and NBC Radio's New York City
flagship
A flagship is a vessel used by the commanding officer of a group of navy, naval ships, characteristically a flag officer entitled by custom to fly a distinguishing flag. Used more loosely, it is the lead ship in a fleet of vessels, typically ...
, WRCA (now
WFAN) were both clear channel stations. At the time, the FCC normally did not allow common ownership of clear channel stations with overlapping nighttime coverage. After clearing the final regulatory hurdles, the swap went into effect on January 22, 1956.
On February 13, NBC changed KYW's call letters in Philadelphia to WRCV (for the
RCA-Victor record label). At the same time, Westinghouse changed the call letters of its new Cleveland station from WTAM to KYW. The Westinghouse-NBC station swap, and its subsequent reversal nine years later, resulted in two alternate ways to recount KYW's history. In the records of the FCC, the station in Philadelphia on 1060 kHz merely underwent two call letter and ownership changes, taking place in 1956 and 1965. However most KYW histories follow the path of the call letters, and refer to KYW moving from Philadelphia to Cleveland in 1956, then returning to Philadelphia nine years later.
["The History of KYW Newsradio"](_blank)
which details the evolution of the station from Chicago, to Philadelphia, to Cleveland and back to Philadelphia (philadelphia.cbslocal.com)
Based on its responsibilities as an NBC-owned outlet, WRCV carried all of NBC's network programming, such as the weekend ''
Monitor'' magazine-style program. Philadelphia radio personality
Hy Lit briefly worked at WRCV during the first year of NBC ownership, hosting a local
rock-and-roll program and an
adult standards show for the NBC network. WRCV adopted a
big band
A big band or jazz orchestra is a type of musical ensemble of jazz music that usually consists of ten or more musicians with four sections: saxophones, trumpets, trombones, and a rhythm section. Big bands originated during the early 1910s and ...
format featuring
swing music
Swing music is a style of jazz that developed in the United States during the late 1920s and early 1930s. It became nationally popular from the mid-1930s. Swing bands usually featured soloists who would improvise on the melody over the arrangement ...
popular during the pre-rock era.
Return to Philadelphia (1965)
Almost immediately after the NBC-Westinghouse trade was finalized, Westinghouse complained to the FCC and the
United States Department of Justice
The United States Department of Justice (DOJ), also known as the Justice Department, is a United States federal executive departments, federal executive department of the U.S. government that oversees the domestic enforcement of Law of the Unite ...
that it had been coerced into making the station swap, including a threat by NBC to revoke Westinghouse's NBC-TV affiliations. A lengthy investigation was launched. In September 1959 the Justice Department issued a decision which, in part, instructed NBC to divest WRCV-AM-TV by the end of 1962. Several months later in early 1960, NBC announced it would trade its Philadelphia stations to
RKO General in exchange for that company's Boston outlets,
WNAC-AM-
FM-
TV. That proposed station swap was held up for nearly four years until the FCC issued a final decision in August 1964. The Commission renewed NBC's licenses for WRCV radio and television, on the condition that the 1956 station swap with Westinghouse be reversed. RKO General initially contested the FCC's decision, but soon gave up its efforts and bowed out of the competition. Following nearly a year of appeals by NBC, Westinghouse regained control of WRCV-AM-TV on June 19, 1965, and subsequently restored the KYW call letters to the radio station. The television station became
KYW-TV at this point.
All-news format
On September 21, 1965, shortly after Westinghouse regained control of 1060 AM, the newly revived KYW dropped its NBC radio affiliation. It became one of the first radio stations in the country to switch to an
all-news radio
All-news radio is a radio format devoted entirely to the discussion and broadcast of news.
All-news radio is available in both local and radio syndication, syndicated forms, and is carried on both major US satellite radio networks. All-news sta ...
format. Newscaster Steve Porter read the first newscast, which had been edited by
Fred B. Walters, the former
Harrisburg
Harrisburg ( ; ) is the List of capitals in the United States, capital city of the Commonwealth (U.S. state), U.S. commonwealth of Pennsylvania and the county seat, seat of Dauphin County, Pennsylvania, Dauphin County. With a population of 50, ...
bureau chief and eventual executive editor. The new format was part of Westinghouse's decision to put all-news formats on its large market AM stations. Five months earlier the company had converted
WINS in New York City from a
Top 40
In the music industry, the Top 40 is a list of the 40 currently most popular songs in a particular genre. It is the best-selling or most frequently broadcast popular music. Record charts have traditionally consisted of a total of 40 songs. "To ...
format to all-news. A third conversion was made three years later at another Westinghouse-owned station,
KFWB in Los Angeles. The Westinghouse trio of all-news stations made numerous contributions to developing the all-news format.
In 1972, KYW moved to new studios in
Independence Mall East, at Fifth and Market streets, where it would remain for the next 35 years.
KYW has long been a leader in the Philadelphia radio market, although its audience had naturally reduced due to the decline of AM as a whole. KYW-TV took advantage of the radio station's popularity by incorporating a version of KYW's musical sounder into its news themes from 1991 to 2003. In addition, ''KYW Newsradio This Morning'' aired on co-owned
WPSG (channel 57) in the early 2000s, adapting KYW's "news blocks" to television (though it was not a simulcast of KYW itself). KYW anchors and reporters were seen on morning television delivering the news.
Changes in ownership

In 1995, Westinghouse Electric announced its purchase of CBS. Upon its completion KYW became a
sister station
In broadcasting, sister stations or sister channels are radio or television stations operated by the same company, either by direct ownership or through a management agreement.
Radio sister stations will often have different formats, and somet ...
to its long-time rival, CBS-owned WGMP (1210 AM, now WPHT). That station, under its original WCAU call letters, had attempted during the late 1970s to compete with KYW with all-news programming. The effort failed, with WCAU switching to a talk format after a three-year effort.

From 1986 to 1998, KYW used the
C-QUAM AM Stereo
AM stereo is a term given to a series of mutually incompatible techniques for radio broadcasting stereo audio in the AM band in a manner that is compatible with standard AM receivers. There are two main classes of systems: independent sideban ...
system, but abandoned stereo broadcasts about the time of the CBS-Westinghouse merger and went back to standard monophonic broadcasts. The station previously used the
HD Radio
HD Radio (HDR) is a trademark for in-band on-channel (IBOC) digital radio broadcast technology. HD radio generally simulcast, simulcasts an existing analog radio station in digital format with less noise and with additional text information. HD R ...
digital system created by
iBiquity beginning in 2007 after an initial testing period.
In March 2007, the studios moved one half-block to 400 Market Street in
Center City Philadelphia, which allowed for the construction of the National Museum of American Jewish History. In March 2014, KYW radio and television relocated to the sixth floor of 1555 Hamilton Street in Philadelphia, in what was initially referred to on-air as the "CBS Broadcast Center".
In November 2017, CBS Radio merged with
Entercom, which is based in Philadelphia. Entercom had never previously owned a station in its home market. The transaction separated KYW from its television counterparts, and marked the first time since its establishment 96 years earlier that KYW was no longer owned by a direct descendant of Westinghouse.
KYW radio ended its longtime partnership with KYW-TV on February 10, 2020, and began broadcasting traffic, news, and weather information from NBC-owned
WCAU (channel 10). The change coincided with KYW radio's move from the CBS Broadcast Center (which continues to house KYW-TV) to 2400 Market Street, along with Entercom's other Philadelphia radio stations and its corporate headquarters.
KYW broke from its all-news format on November 3, 2022, to simulcast Game 5 of the
2022 World Series
The 2022 World Series was the World Series, championship series of Major League Baseball's (MLB) 2022 Major League Baseball season, 2022 season. The 118th edition of the World Series, it was a best-of-seven playoff between the American League (AL ...
, which involved the
Philadelphia Phillies, with WPHT. The Phillies' flagship station,
WIP-FM (94.1), could not air the game because of a conflict with the
Philadelphia Eagles
The Philadelphia Eagles are a professional American football team based in Philadelphia. The Eagles compete in the National Football League (NFL) as a member of the National Football Conference (NFC) NFC East, East division. The team plays its ...
, who were playing a
Thursday Night Football game at the same time.
Notable on-air staff
*
Andrea Mitchell
*
Larry Kane: Special Contributor
*
Wally Kennedy: Anchor
Notable alumni
*
Rich Gunning: Traffic and Transit
Stations
One full-power station
simulcasts the programming of KYW:
KYW programming is also available via a simulcast on the HD2 subchannel of sister station 94.1
WIP-FM.
References
See also
*
List of initial AM-band station grants in the United States
List of initial AM-band station grants in the United States reviews the first standard radio broadcasting stations that were authorized in the United States.
This review begins with the introduction of the broadcasting service in the United S ...
Further reading
*
External links
*
FCC History Cards for KYW(covering 1927-1981)
{{All-News Radio
All-news radio stations in the United States
Audacy, Inc. radio stations
Clear-channel radio stations
Radio stations established in 1921
KYW
Westinghouse Broadcasting