15 July – Inauguration of DZRH, one of the oldest radio stations in the Philippines.
29 July – In France, with war on the horizon, a package of decrees tightens the state's control of public radio and obliges all private stations to broadcast, unedited, the government's Radio-Journal in place of their own news programmes.[2]
7 August – Official test transmissions begin from Radio Andorra. The station is ceremonially inaugurated two days later by the French Minister of Public Works, Anatole de Monzie.
1 September – At 18.55 local time BBC engineers receive the order to begin closing down all transmitters in preparation for wartime broadcasting: this marks the end of the National and Regional Programmes of the BBC. At 20.15 local time the BBC's Home Service begins transmission: this will be the Corporation's only domestic radio channel for the first four months of World War II.
19 September – Popular British radio comedy show It's That Man Again with Tommy Handley is first broadcast on the BBC Home service, following trial broadcasts from 12 July.[3][4] Known as "ITMA", it runs for ten years.