Sending Radio Messages
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✎ Suggest a correctionExplains the basic principles of radio transmission and the importance of radio in modern living. Uses animated drawings to show the operation of microphone, transformer and modulator. Describes and explains direct, alternating and voice currents, carrier waves and amplification. Demonstrates through natural photography the operation of units in a modern transmission station.
Copyright
© Erpi Classroom Films, Inc.; 2Jun43; MP14229.
Complete catalog record
Explains the basic principles of radio transmission and the importance of radio in modern living. Uses animated drawings to show the operation of microphone, transformer and modulator. Describes and explains direct, alternating and voice currents, carrier waves and amplification. Demonstrates through natural photography the operation of units in a modern transmission station. , SENDING RADIO MESSAGES. Erpi Classroom Films, Inc., c1943. 1 reel, sd. (Principles of Radio, pt. 1) © Erpi Classroom Films, Inc.; 2Jun43; MP14229., SENDING RADIO MESSAGES. Erpi Classroom Films, Inc., c1943. 1 reel, sd. (Principles of Radio, pt. 1) © Erpi Classroom Films, Inc.; 2Jun43; MP14229.NOTE: Two (or more) records have been merged together to create this data.
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Sources
- A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
- 16mm Filmography (legacy record) — catalog record, copyright
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