Sending Radio Messages

Duration: 1 reel

Year Published: 1943

Creator: Encyclopedia Britannica Films

Format: 16mm

Sound: sound

Description: 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.

Complete 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.