Alfred

@alfreduwu · 06 Aug 2022

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The radio and its history

#history At the end of the 19th century, there were years of political uncertainty in much of the world (a situation that seems to have not improved over time), with wars that threatened the stability of the great nations of the time, prompting a large part of scientists, universities and laboratories to try hastily to find a new communications system that did not need cables to transmit information, the main drawback of the telegraph, Based on Hertz's previous experiences from 1886, different research groups sought formulas to achieve this wireless telegraphy and thus achieve a military advantage over its rivals, thanks among others things to the possibility of communicating with troops over long distances and especially with ships on the high seas.

Although Marconi is traditionally credited with the invention of Radio, the truth is that similar systems or some of its parts were being developed in different parts of the world simultaneously, although we cannot deny that Marconi had the merit of knowing how to integrate existing knowledge into a single team up to date related to the sending and receiving of electromagnetic waves discovered by Hertz, Tesla, Branly, Lodge or Popov, around 1937 the first systems based on FM frequency modulation appeared that complemented those of AM amplitude modulation and that allowed to minimize interference problems and reduce static in receivers due to the equipment itself and environmental conditions