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First national radio network in North America. [47] Developed by the Canadian National Railway to provide en route entertainment for train passengers but also available to anyone within signal range. Consisted of 27 stations (3 owned and operated and up to 24 "phantom stations" – time leased on affiliated radio stations. WEAF chain
List of AM radio stations in the United States by call sign (initial letters KN–KS) List of AM radio stations in the United States by call sign (initial letters KT–KZ) List of AM radio stations in the United States by call sign (initial letters WA–WF) List of AM radio stations in the United States by call sign (initial letters WG–WM)
w. w298ap; wagn (am) wake (am) watx; waxs; wazx (am) wbat; wbbt (am) wbbx (fm) wbev-fm; wbfx; wbgn (am) wbgr-fm; wbol; wbqq; wbsc-lp; wbwo-lp; wbyb (fm) wcbl (am ...
Radio stations attractiveness to advertisers began to change from a "mass medium" to one shaped by demographics, although to a lesser degree than television; radio formats began to be targeted toward specific groups of people according to age, gender, urban (or rural) setting and race, and freeform stations with broad playlists became uncommon ...
The earliest radio programs of the 1920s were largely unsponsored; radio stations were a service designed to sell radio receivers. In early 1922, American Telephone & Telegraph Company (AT&T) announced the beginning of advertisement-supported broadcasting on its owned stations, and plans for the development of the first radio network using its ...
In the United States, FM broadcasting stations currently are assigned to 101 channels, designated 87.9 to 107.9 MHz, within a 20.2 MHz-wide frequency band, spanning 87.8–108.0 MHz. In the 1930s investigations were begun into establishing radio stations transmitting on "Very High Frequency" (VHF) assignments above 30 MHz.
The Happy Station Show: 61 35 by Eddy Startz: PCJJ (1928-1940, 1946–47), Radio Netherlands (1947-1995) 18 November 1928 17 September 1995 Long-running shortwave radio light entertainment programme from Holland in English and Spanish. Had an audience of as high as 100 million in the 1930s [37] and 25 million in the 1970s. [38]
In early radio, and to a limited extent much later, the transmission signal of the radio station was specified in meters, referring to the wavelength, the length of the radio wave. This is the origin of the terms long wave , medium wave , and short wave radio. [ 51 ]