History Of Radio by David Green https://padlet.com/DavidGreens/vlkn39liqlz4 Early technology to currently some of present day en-us 2018-09-05 13:33:25 UTC 2024-11-21 19:48:38 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Lovecoffee.png Guglielmo Marconi first transformed a wireless system based on Hertzian waves in 1894. He later developed it as a commercial system DavidGreens https://padlet.com/DavidGreens/vlkn39liqlz4/wish/277971076 2018-09-05 13:47:26 UTC https://padlet.com/DavidGreens/vlkn39liqlz4/wish/277971076 Roberto Landell de Moura designed a transmission device in 1900 that could send human voice signals miles apart. His ideas were awarded and patented in three different ways. DavidGreens https://padlet.com/DavidGreens/vlkn39liqlz4/wish/277976406 1) The"The Wave Transmitter"
2) The Wireless Telephone
3) Wireless Telegraph

]]> 2018-09-05 13:55:38 UTC https://padlet.com/DavidGreens/vlkn39liqlz4/wish/277976406 From 1919 onwards Crystal Set Recievers were common in use. Amplification modulation on these radios meant that several stations could send out signals. This innovation tool was brought into practise by Fessenden & Lee de Forest. DavidGreens https://padlet.com/DavidGreens/vlkn39liqlz4/wish/277984206 2018-09-05 14:09:25 UTC https://padlet.com/DavidGreens/vlkn39liqlz4/wish/277984206 In the 1950s the National Television System Committee implemented the first compatible colour television introduced in the US. The main component Cathode ray tube was used to beam images to the screen. These are termed as electrical waveforms or radar targets. DavidGreens https://padlet.com/DavidGreens/vlkn39liqlz4/wish/277990612 2018-09-05 14:19:54 UTC https://padlet.com/DavidGreens/vlkn39liqlz4/wish/277990612