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Marconi
an italian inventor who sent and receivd the first radio signal. -
Thomas eddison
In the Nineteenth Century Thomas Edison noticed a blackening on the inside of his burning light bulb. He believed it to be caused by electrons and he named it the “Edison Effect.” -
Audion Tube
Lee De Forest created (borrowed) the new idea for the audion tube, a vaccum tube that amplifies signals. -
radio stations
radio stations were created -
the dawn of advertising
a 10 minute commercial, and brodcasts for apartment complex charging was $50 -
Roger's Batteryless Receiver Model
Roger's Batteryless Receiver Model 130, built in 1925 -
FRC
FRC was established. -
the great depression
people were hurting for $$$$$$$$$$ -
The father of commercial broadcasting
Henry P. Davis died in 1931 -
fixing the problem with the 250 watt spark transmitter,
the switch from a distant frequency to a nearby station resulted in a dramatic increase in volume. The invention of the automatic loudspeaker in 1928 improved this problem immensely.