radio

marconi

Jul 25, 1895

italian inventor
sent and received first radio signal in 1895
was he the first or was it case of good PR

audion tube

Jan 1, 1906

in 1906, lee de forest, created the audio tube, a vacuum tube that amplified signals. it is widely believed that a canadian inventor, Reginald fessenden, actually came up with the idea, but fessenden didn't seem to make it into the history books for that invention.

iceberg straight ahead

Apr 2, 1912

how did radio have an impact on the titanic ? answer: the operators were taking down personal messages, along with news and stock report with the passengers.

radio station

Jan 1, 1920

1920
8XK, later renamed KDKA
Frank conrad
still around today broadcasting out of pittsburg, pennsylvania

personal radio station

Jan 1, 1920

uncle charlie

the dawn of advertising

Jan 30, 1920

How does a radio station make money?
A: they make a profit from the ads they sell and comercial
in the 1922 WEAF aired a 10 minute 'commercial' or toll broadcast, for an apartment complex charging $50

FRC

Jan 30, 1927

uncle charlie was too popular
established FRC in 1927
-organize the licensing of transmitters
-assigning radio station frequencies, call letters, and power limits

AM waves

Jan 1, 1933

Amplitude modulation
535 KHz - 1605 KHz

FM wave

Jan 1, 1933

Frequency Modulation
88-108 MHz

famous shows of the golden era

Jan 1, 1950

Amos n andy
gunsmoke
the shadow
our miss brook
superman
dick tracey
little orphan annie
$64 dollar question

call letters

Jan 30, 2017

W is east of the mississippi river
K is west of the mississippi river
why assign call letters?
A: call letter are used by television stations to identify themselves to the TV audience.
what about WBAP and WFAA
A: they different statin from what side they are from