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The year 1942 saw a number of significant happenings in radio broadcasting history.
- 1 January – All radio broadcasting in the Netherlands comes under full control of the country's Nazi occupiers. Publication of the only authorized programme guide, De Luistergids, begins.
- 9 January – Blue Network Company, Inc. is incorporated by RCA in the United States to hold the assets of the NBC Blue Network, in case NBC loses their case against the FCC in court to maintain ownership of two networks.
- 29 January – The BBC Forces Programme transmits the first edition of Desert Island Discs, presented by Roy Plomley. Vic Oliver is the first castaway. The series will still be running (on BBC Radio 4) 77 years later.
- 23 February – Fireside chat: On Progress of the War.
- 24 February – The Voice of America begins short-wave radio broadcasting using CBS and NBC transmitters. Its first programmes are in German.
- 27 February – James Stanley Hey, a British Army research officer, helps develop radio astronomy, when he discovers that the sun emits radio waves.
- 28 April – Fireside chat: On Our National Economic Policy.
- 26 July – Gene Autry takes his oath of office to join the United States Army during the broadcast of Gene Autry's Melody Ranch.
- 7 September – Fireside chat: On Inflation and Progress of the War.
- 12 October – Fireside chat: Report on the Home Front.
- 24 January: Abie’s Irish Rose debuts on NBC.
- 3 February: Red Ryder debuts on NBC Blue West Coast.
- 1 March: KBON, Omaha, Nebraska, a Mutual affiliate, begins broadcasting on 1400 kHz with 250 W power (full-time).
- 4 March: Junior Miss (1942–1954) debuts on CBS.
- 22 March: The Better Half debuts on Mutual.
- 3 April: People Are Funny debuts on NBC.
- 5 April: The Army Hour debuts on NBC.
- 13 April: Are You a Genius? debuts on CBS.
- 19 April: WJLD, Bessemer, Alabama, begins broadcasting on 1400 kHz with 250 W power.
- 1 May: In Person, Dinah Shore debuts on the Blue Network.
- 6 May: The Radio Doctor (Charles Hill) makes his first BBC radio broadcast giving health care advice.
- 9 June: Cheers from the Camps debuts on CBS.
- 18 July: Chips Davis, Commando debuts on CBS.
- 30 July: Stage Door Canteen debuts on CBS.
- 2 August: Hop Harrigan debuts on ABC.
- 3 August: An American in England debuts on CBS.
- 6 September: Mayor of the Town debuts on NBC.
- 20 September: The Electric Hour debuts on CBS.
- 2 October: The Cisco Kid debuts on Mutual.
- 10 October: Campana Serenade debuts on NBC.
- 20 October: Songs by Sinatra debuts on CBS.
- 31 October: The Bob Hawk Show debuts on CBS.
- 9 November: Ceiling Unlimited debuts on CBS.
- (undated) - Harold Teen ends its run on network radio (Mutual). 
- 3 January: The Bishop and the Gargoyle ends its run on network radio (Blue Network).
- 3 April: Captain Flagg and Sergeant Quirt ends its run on network radio (NBC).
- 26 April: Songs by Dinah Shore ends its run on network radio (NBC-Blue).
- 26 June: Arnold Grimm's Daughter ends its run on network radio (NBC).
- 23 August: Great Plays ends its run on network radio (Blue Network).
- 11 September: The Bartons ends its run on network radio (NBC).
- 22 September: Cheers from the Camps ends its run on network radio (CBS).
- 25 September: The Story of Bess Johnson ends its run on network radio (NBC).
- 27 September: Joe and Mabel ends its run on network radio (NBC).
- 3 November: The Avenger (radio program) ends its run on WHN.
- 22 December: An American in England ends its run on network radio (CBS).
- 7 August: Garrison Keillor, American public radio host of A Prairie Home Companion
- 20 September: Dan Davis, American radio personality on ESPN Radio.
- 11 December: Bud Ballou, American disc jockey and radio personality during the 1960s and 1970s.
- Bill Brown, New York City television and radio personality (WCBS-FM, WPLJ, WNEW-FM)
- Larry Monroe, 29-year veteran with KUT in Austin, Texas.
- Cox, Jim (2008). This Day in Network Radio: A Daily Calendar of Births, Debuts, Cancellations and Other Events in Broadcasting History. McFarland & Company, Inc. ISBN 978-0-7864-3848-8.
- Penguin Pocket On This Day. Penguin Reference Library. 2006. ISBN 0-14-102715-0.
- French, Jack & Siegel, David S. (eds.) (2014). "Radio Rides the Range: A Reference Guide to Western Drama on the Air, 1929-1967. McFarland & Company, Inc. ISBN 978-0-7864-7146-1. Pp. 76.
- Dunning, John. (1998). On the Air: The Encyclopedia of Old-Time Radio. Oxford University Press. ISBN 978-0-19-507678-3.
- "KBON Goes MBS March 1" (PDF). Billboard. 28 February 1942. Retrieved 8 February 2015.
- Alicoate, Jack, Ed. (1944). The 1949 Radio Annual. Radio Daily Corp. P. 347.
- Young, William H.; Young, Nancy K. (2007). Music of the World War II Era. ABC-CLIO, Incorporated. p. 118. ISBN 9780313338915. Retrieved 13 August 2015.
- Sies, Luther F. (2014). Encyclopedia of American Radio, 1920-1960, 2nd Edition. McFarland & Company, Inc. ISBN 978-0-7864-5149-4. Pp. 145-146.
- Cox, Jim (2015). "Hilltop House". The Great Radio Soap Operas. McFarland. pp. 71–76. ISBN 9781476604145. Retrieved 14 December 2018.
- Curtin, Kevin. "Larry Monroe 1942-2014". The Austin Chronicle. Retrieved 20 September 2014.
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