who made the radio?

Answer 1

http://www.geocities.com/aldoandr/Marconi/marconi.html

Answer 2

Many telegraph and telephone workers noticed transmission of Morse and even speech from one line to another. This was usually over short distances with parall lines and was mostly due to induction. This was well understood by some as early as the 1870s. Edison took a patent for communicating with moving trains by induction and a system was actually built but was abandoned after a short time.

Marconi did not invent wireless telegraphy, he improved it to a workable system by increasing the sensitivity of the "coherer" detector invented in the late 1880s or early 1890s by Branly in France. There is a lot of talk about Tesla but I have yet to see solid evidence of a working system that he made. His designs were advanced, better than Marconi's but did they actually work over hundreds or thousands of miles?

In 1890 Professor Richard Threlfall at a scientific meeting in Sydney, Australia predicted that the discoveries of Heinrich Hertz would lead to a "long-range" wireless communication system. This appears to have been the first public mention of the possibility, at least in the English-speaking world. He was busy with other work so did not follow it up himself. Did he "invent" radio? There were literally dozens of people around the world working on it in from about 1891 to 1900 all without much knowledge of each other's work. Lodge, Bragg, Rutherford, Admiral "Jackie" Fisher, Popov, Braun, Branly were just a few.

In any case that was not "radio" or transmission of sound but wireless telegraphy which is the controlled transmission of electric impulses.

Radio was not a commercial possibility until the half-accidental invention of the triode vacuum tube by de Forest while he attempted to evade a Marconi patent on the diode vacuum tube. But the first transmission of speech and music came from an invention by Reginald Fessenden in 1906 using a different and soon abandoned system.

A few years later Edwin Howard Armstrong used vacuum tubes to develop a very sensitive detector system called super-regeneration. Armstrong went to invent the super-heterodyne system in about 1916. This is still used in almost all radio and TV receivers. Later he invented FM.

Answer 3

Marconi

Answer 4

Marconi invented radio.

Answer 5

The fact is a man named Nikola Tesla did.
It is how ever accept that marconi did.
Just like people do not know who invented AC
It was not edison. He was for DC not AC
Again Nikola Tesla did envented AC current