NATS 1775 Lecture Notes - Telegraphy

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Radio systems are comprised of many different parts, and many different inventors are attributed with the invention of the radio. Heinrich hertz was one of the first people to use electrical waves to transmit information. He was a scientist who used a device called an oscillator in order to do this. At the beginning of its history, the radio was very rudimentary. There was no voice usage at the time, this came later. It was also referred to as wireless telegraphy , and was used the same was as wired telegraphy. Samuel morse - developed the morse code, which was used to transmit information telegraphically (both wired and wireless) Each letter of the alphabet was assigned a special electrical signal, which was comprised of dots and dashes. By receiving these messages, one could decode what the message said. Marconi was the first person to create a company to provide this type of service.

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