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This 1920s TRF radio manufactured by Signal is constructed on a breadboard Tuning a TRF receiver, like this 5 tube Neutrodyne set from 1924 with two stages of RF amplification, was a complicated process. The three tuned circuits, controlled by the 3 large knobs, had to be tuned in unison to the new station.
Audio reproduction quality of TRF sets was limited by the available loudspeakers. "High Fidelity" was not to become a radio marketing concept until the mid-1930s and was not realized until the advent of FM broadcasting. Reaction sets, also known as regenerative receivers, rely on positive feedback to achieve adequate gain. This approach ...
The RCA model R7 Superette superheterodyne table radio. This is a list of notable radios, which encompasses specific models and brands of radio transmitters, receivers and transceivers, both actively manufactured and defunct, including receivers, two-way radios, citizens band radios, shortwave radios, ham radios, scanners, weather radios and airband and marine VHF radios.
The Antique Wireless Association (AWA) is chartered as a non-profit educational organization in New York State and is an IRS 501(c)(3) tax-exempt corporation based in Bloomfield, New York. [1] It was originally established in 1952 by Bruce Kelley, George Batterson, and Linc Cundall for operators and collectors of radio equipment. [ 2 ]
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Prices ranged from $126.50 to $235 in 1930 (equivalent to $1,890–$3,500 in 2020), with installment purchase plans offered by retail dealers. [15] In a March, 1930, review, the Charlotte Observer said the Majestic brand was "famous the world over for its excellent reception and colorful tone", with "striking yet tasteful cabinet designs". [1]
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Ad for an Atwater Kent Radio receiver in the Ladies' Home Journal (September, 1926) Ad for Atwater Kent Radio Model 35, 1927. In 1921, Kent produced his first radio components, selling the do-it-yourself kits consisting of "breadboards" that could be assembled by early radio enthusiasts. [3]