Principles of radio. Part 1. Sending radio messages

United States, 1943

Film
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Sorry, we don't have images or video for this item.

Detailed treatment is given to the following: operation of the microphone, transformer and modulator; nature of a sound wave; direct current; alternating current; voice current; carrier wave; and amplification.

Credits

production company

ERPI Classroom Films

Language

English

Duration

00:10:17:00

Colour

Black and White

ACMI Identifier

28363

Subject categories

Advertising, Film, Journalism, Mass Media & TV â†’ Radio - Receivers and reception

Advertising, Film, Journalism, Mass Media & TV â†’ Radio waves

Communications, Infrastructure, & Transport â†’ Communications - History

Communications, Infrastructure, & Transport â†’ Radio waves

Documentary

Documentary â†’ Documentary films - United States

Educational & Instructional

Educational & Instructional â†’ Educational films

Educational & Instructional â†’ Instructional

Mathematics, Science & Technology â†’ Amperes

Mathematics, Science & Technology â†’ Radio waves

Mathematics, Science & Technology â†’ Sound-waves

Short films

Short films â†’ Short films - United States

Sound/audio

Sound

Holdings

16mm film; Access Print (Section 1)

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If you would like to cite this item, please use the following template: {{cite web |url=https://acmi.net.au/works/72651--principles-of-radio-part-1-sending-radio-messages/ |title=Principles of radio. Part 1. Sending radio messages |author=Australian Centre for the Moving Image |access-date=25 January 2021 |publisher=Australian Centre for the Moving Image}}