Generally in the 20th century (1900-1999), because there were so many different kinds, including AM, FM, satellite, digital, tube (valve), transistor, integrated circuit, boombox, walkman, shortwave, AC/DC, hi-fi, stereo, quadraphonic, SCA (muzak), HDradio, digital radio mondiale, SDR (software defined radio), superheterodyne, walkie-talkie, cellular, etc.
John and Frank Craighead invented radio collars for Grizzly bears.
No. The radio was invented by Guglielmo Marconi.
No.
Radio was invented in Britain and Germany, not the USA.
marconi radio is just actually the first radio that was invented by marconi.
Marconi was 20 when he invented the radio.
jamie ranson invented the radio in 1954
yes gugelimo marconi invented the radio
The first car radio was invented in 1929.
the first radio was invented in 1896 by guglielmo marconi
The first person could be Thomas Elva Edison who invented radio.
John and Frank Craighead invented radio collars for Grizzly bears.
Marconi invented the radio. He invented a successful system of radio telegraphy in 1896. In 1895, Marconi invented equipment that transmitted electrical signals through the air (part of telegraphy and radio transmission).
Guglielmo Marconi invented the radio
the radio was not invented in the 1920s, but it came out in the 1920s when people could buy them
Yes it was invented in the 1860s
It was invented around 1880.