Who invented radio
* In 1878, David E. Hughes transmitted Morse code by radio at and below the Super low frequency range (via a clockwork transmitter).
* In 1888, Heinrich Hertz produced and measured the Ultra High Frequency range (via a sparkgap transmitter).
* In 1891, Nikola Tesla began wireless research. He developed means to reliably produce radio frequencies, publicly demonstrated the principles of radio, and transmitted long-distance signals. He obtained a U.S. patent for the invention of the radio, as defined as "wireless transmission of data."
* Between 1893 and 1894, Roberto Landell de Moura, a Brazilian priest and scientist, cond ...more