vacuum

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Ham Radio Loop Antenna - Amateur radio loop antenna project using a Comet CVBA-500BC vacuum variable capacitor.
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The Tube Thing - The Vacuum Tube Page with a lot of stuff about tubes
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Evolution of Car Radios: From Marconi to Motorola - his historical account traces the development of car radios from Marconi's mobile wireless telegraph station on a steam engine vehicle in 1901 to Motorola's iconic car radio models in the 1930s. It highlights key milestones such as Alfred Grebe's radio-telephone experiments on Long Island and the introduction of Marconi-Phone 8 radios by the Daimler Company in England. The narrative explores technological advancements, including the transition from TRF to Super-Heterodyne circuitry and the integration of push-button controls. The evolution from vacuum tubes to transistors and compact discs is also documented, showcasing the continuous innovation in automotive entertainment systems.
[ Hits: 50 | Votes: 1 | Rating: 1 ]

What is a Vacuum Tube - Read all the key details about Vacuum Tubes or Thermionic Valves that provided the foundations for today's electronics technology.
[ Hits: 281 | Votes: 2 | Rating: 10 ]