AMPLITUDE AND FREQUENCY MODULATION 5

An educational illustration depicting various inventors of radio technology including Tesla, Marconi, and Fessenden with vintage radio equipment and waveforms in the background.

Mastering Amplitude and Frequency Modulation

Test your knowledge of the pioneers of radio transmission and reception in our Amplitude and Frequency Modulation quiz! Dive into the groundbreaking discoveries that shaped modern communication and solidified the foundations of radio technology.

Whether you're a student of the field or simply passionate about radio technology, our quiz features:

10 questions on significant inventors and their contributions
Fun facts and insights about radio history
A chance to challenge yourself and improve your knowledge

10 Questions2 MinutesCreated by LearningWave527

Nikola Tesla outlined the basic principles of radio transmission and reception.

Heinrich Hertz detected electromagnetic waves with an oscillating circuit and establishes the existence of radio waves.

Hertz discovered the progressive propagation of electromagnetic action through space using a spark – gap wave generator, to measure the length and velocity of electromagnetic waves and their direct relation to light and heat as their vibration, reflection, refraction and polarization.

Almon Strowger introduced the dial – switching system transmitting the desired telephone number electrically without the assistance of a human telephone operator.

Marchese Guglielmo Marconi discovered ground – wave radio signals.

Guglielmo Marconi established the first radio link between England and France.

Reginald A. Fessenden transmits the world’s first radio broadcast using continuous waves. Marconi transmits telegraphic radio messages from Cornwall, England to Newfoundland, first successful transatlantic transmission of radio signals.

John Ambrose Fleming invented the Vacuum Tube Diode.

Reginald Fessenden invented Amplitude Modulation (AM). Lee De Forest added a grid to the diode and produced triode. Ernst F. W. Alexanderson invented the Tuned Radio Frequency Receiver (TRF) an HF Alternator to producing AC contributing to better voice broadcasting.

Reginald Fessenden developed the Heterodyne Receiver.

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