1920-1929 - Early Broadcasting
1926
The first 'light socket' powered sets are marketed.RCA, Westinghouse and GE start a network...NBC, the National Broadcasting Corporation.
A US court decides that the Secretary of Commerce has no power to regulate broadcasting - only to issue licenses, and the chaos on the broadcast bands grows as stations increase power to drown out the competition.
David Sarnoff is named vice president of RCA.
The BBC, British Broadcasting Corporation is granted a Royal Charter.
"Pay Radio"makes its debut in Philadelphia - Placed in retail stores, these 5 foot high units charge a nickle for 5 minutes of radio.
1927
Philo T. Farnsworth makes his application for a patent to cover a complete electronic television system, including an "image dissector tube."
FarnsworthThe FRC, Federal Radio Commission begins to regulate broadcasting. Their first act was to revoke all licenses, and then assign frequencies and power levels.
Mechanical televisions are being sold in kit form.
The Columbia Broadcasting System - CBS - is started
1928
Diode detectors receive consideration by radio designers.Type 226 and 227 tubes with AC heaters are released by tube manufacturers.
The first experimental TV station begins broadcasting - WGY in Schenectady, NY.
AC Screen Grid tubes are announced towards the end of the year.
1929
RCA gains control of several important radio patents, and begins to license manufacturers to use those designs. Prior to this, radio design was somewhat stifled because no one could legally use the designs of many important circuits.
Amos 'n' Andy becomes a series on NBC
A typical AC TRF receiver employs type 226 tubes in the RF and AF amps, a 227 as a detector, type 71A for the output and a type 80 in the power supply.
Atwater-Kent
Arthur Atwater-Kent places a 'Time Capsule' in the cornerstone of his new factory addition. It is opened in 1996
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