Donahue began his career in 1957 as a production assistant at KYW radio and television in Cleveland.

Channel 4 nearly lost its NBC affiliation in 1955 when Westinghouse balked at NBC's initial offer to trade sister stations KYW radio and WPTZ television ( now KYW-TV ) in Philadelphia in exchange for the network's radio and television combination in Cleveland, Ohio.

In June 1955, Westinghouse agreed to trade KYW and WPTZ to NBC in exchange for the network's properties in Cleveland, WNBK television and WTAM-AM-FM.

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 ).

In addition, a television program entitled KYW Newsradio 1060 This Morning aired from 5 a. m. to 8 a. m. on sister station WPSG in the early 2000s, adapting KYW's " clock " to television.

In June 1955 Westinghouse agreed to trade WPTZ and KYW radio to NBC in exchange for Cleveland's WNBK television and WTAM-AM-FM, and $ 3 million in cash compensation.

It briefly succeeded in 1956, when it extorted Westinghouse into exchanging channel 3 ( then called WPTZ-TV ) and KYW radio for NBC's Cleveland stations, WTAM-AM-FM and WNBK television.

When Westinghouse regained control of the Philadelphia stations on June 19, 1965, it restored the KYW calls to the radio station and renamed the television station KYW-TV.

The CBS Radio Network provides newscasts at the top of the hour, regular updates at: 31 past the hour, the popular Newsfeeds for affiliates ( including WCBS and KYW ) at: 35, and breaking news updates when developments warrant, often at: 20 and: 50 past the hour.

KYW assigns schools in the metropolitan area a number which is then announced when they are closed for a snow day or other event.

The system was originally created by the City of Philadelphia but was taken over by KYW when no other station volunteered to distribute the information.

This sound plays constantly during times when the news is being read by a KYW reporter at the headquarters.

Westinghouse's KYW had replaced WFI-WLIT as the NBC primary for Philadelphia when it moved in from Chicago a few years before.

KYW launched a massive " Make the Switch " promotional campaign when Mendte arrived.

In 1965 he was promoted to News Director Philadelphia's KYW-TV where he launched the Eyewitness News format ( the name itself had been used for some years before that by Westinghouse's TV stations for its local newscasts, and in fact was first used by KYW itself in 1959 when it was based in Cleveland, Ohio ), and in 1968 he took the format with him to his new job at WABC-TV, the ABC outlet in New York City.

Though the partnership came to an end in 1926, with Westinghouse buying out Edison's interest in KYW, Insull's interest in broadcasting did not stop there.

In 1927 Westinghouse aligned its four radio stations ( KYW, KDKA in Pittsburgh, WBZ in Boston, and WBZA in Springfield, Massachusetts ) with the NBC Blue Network, which originated from former sister station WJZ ( the present-day WABC ) in New York City.

In 1934, the assignment of clear channels took a frequency away from Illinois and gave it to Pennsylvania, resulting in Westinghouse moving KYW to Philadelphia.

KYW and the other Westinghouse radio stations remained with NBC after RCA was ordered by the FCC to break up its radio networks, aligning with the former Red Network ( the predecessor of modern-day NBC ) in 1942.

NBC took over the Philadelphia stations, rechristening 1060 AM as WRCV ( for the RCA-Victor record label ), and Westinghouse moved the KYW call letters to Cleveland.

On September 21, 1965, shortly after Westinghouse regained control of 1060 AM, the newly-rechristened KYW once again dropped its NBC radio affiliation and was converted into one of the first all-news stations in the country.

Westinghouse Electric announced it was purchasing CBS in 1995, and upon its completion KYW became a sister station to its long-time rival, CBS-owned WGMP ( 1210 AM, now WPHT ).

The Westinghouse Electric Corporation, owner of Philadelphia's NBC radio affiliate KYW ( 1060 AM ), purchased WPTZ in 1953 for a then-record price of $ 8. 5 million.

Westinghouse had moved the KYW call letters to Cleveland after the swap, and upon regaining control of the Philadelphia outlets channel 3 became KYW-TV.

Group W's parent, the Westinghouse Electric Corporation, purchased CBS in 1996, making CBS's Philadelphia radio stations sisters to WCAU-AM / WPHT's longtime rival, KYW radio.

Westinghouse launched three more radio stations in 1921: WJZ, originally licensed to Newark, New Jersey, in September ; WBZ, first located in Springfield, Massachusetts, in October ; and KYW, originally based in Chicago, in November.

A decade later, the FCC forbade common ownership of two or more clear channel stations with overlapping nighttime coverage, though the commission allowed Westinghouse to keep WBZ, KYW, KDKA and WOWO together under a grandfather clause.

Westinghouse built FM sister stations for WBZ / WBZA, KDKA, KYW, KEX and WOWO, all of which were on the air by the end of the decade.

KYW went all-news six months later on September 12, three months after Westinghouse regained control of the station ( see The 1956 Trade with NBC, below ).

In June 1955 Westinghouse announced that it would sell its Philadelphia stations, KYW radio and WPTZ-TV, to NBC.

After the deal was approved in February 1956, Westinghouse moved the KYW call letters to Cleveland, NBC renamed the Philadelphia stations WRCV ( AM ) and WRCV-TV, and both companies also transferred much of their respective on-air personnel and management to their new cities.

A few of the former Westinghouse radio stations still use the former Group W font today ( e. g. KDKA, KYW, and WINS ).

Westinghouse made similar format changes at two other stations: KYW in Philadelphia, in September 1965 ; and KFWB in Los Angeles, in March 1968.

NBC had to seek a waiver for the swap since KYW and NBC Radio's New York City flagship, WRCA ( now sister station WFAN ) were both clear channel stations ; at the time, the Federal Communications Commission ( FCC ) normally did not allow common ownership of clear-channel stations with overlapping nighttime coverage.

WEPN has a highly directional signal, due primarily to the fact that there is another 50, 000 watt station on the 1050 channel, CHUM a few hundred miles to the northwest in Toronto, and yet another 50, 000 watt station, KYW, in Philadelphia next door on the dial at 1060 AM.

When NBC took over in February 1956, channel 3's call letters were changed to WRCV-TV ( for the RCA-Victor record label ; KYW radio adopted the WRCV calls as well ).

In purchasing channel 10 in 1958, CBS cited NBC's then-ownership of WRCV-TV ( as KYW was called ) and WRCA-TV in New York City in its successful effort to obtain an FCC waiver.

KYW's early format elements were shared with WINS, such as the distinctive teletype sound effect playing in the background ( no longer done at KYW ), and the slogans " All News, All the Time ", " The Newswatch Never Stops ", " Listen 2, 3, 4 times a day " and " You give us 22 minutes, we'll give you the world ".

Newspaper accounts of the era report on a number of other drama experiments by America's commercial radio stations: KYW broadcast a season of complete operas from Chicago starting in November 1921.

Insull, who had been a founder of station KYW, sold his interest in the station.

Most of the station's programming during this time was ethnic, though for a time contemporary Christian music station WJLT ( 1060 AM, now WQOM ) leased WKOX's overnight hours to extend its programming ( at that time, 1060 signed off overnight to protect KYW in Philadelphia ).

KYW is a class A AM radio station on 1060 kHz licensed to Philadelphia, Pennsylvania, USA.

That station, under its original WCAU call letters, attempted to compete with KYW in all-news programming during the late 1970s but failed, dumping the format after only three years.

KYW is currently the easternmost station in the United States whose callsign begins with the letter K. It is also one of three such stations in Pennsylvania, the other ones being KQV and sister station KDKA, both in Pittsburgh.

KYW is also re-broadcast by sister station WIP-FM on its HD-2 digital sub-channel.

The former KYW Building on Independence Mall East, used by the station from 1972 to 2007.

From Independence Mall, this is KYW Newsradio 1060, a CBS Radio station serving Pennsylvania, New Jersey, and Delaware.

At: 30 past the hour, the recording is slightly different, with Covington announcing that " the newswatch never stops " ( borrowed from sister station WINS ), and that KYW is " the news authority in Philadelphia.

Weekend movie marathons, usually hosted by local personalities ( or KYW / WPSG staff like Sean Murphy ), have become normal, and the station recently broadcast the Philadelphia version of " Gimme the Mike!

* KYW ( AM ), a radio station ( 1060 AM ) licensed to Philadelphia, Pennsylvania, United States, which carried the KYW callsign from 1921 to 1956 ; and has again since 1965

* WTAM, a radio station ( 1100 AM ) licensed to Cleveland, Ohio, United States, which carried the KYW callsign from 1956 to 1965