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Chrysler and Philco announced an all-transistor car radio in the April 28, 1955, edition of the Wall Street Journal. [1] This Philco car radio model was the first tubeless auto set in history to be developed and produced. [2] It was a $150 option for 1956 Chrysler and Imperial cars and hit the showroom floor on October 21, 1955. [3] [4] [5]
In 1930, the company sold 600,000 radios, grossed $34 million, and was the leading radio maker in the country. By 1934, they had captured 30% of the domestic radio market. [10] A Philco 90 "cathedral" style radio from 1931. Philco radios were economical without sacrificing quality or durability.
The term All American Five (abbreviated AA5) is a colloquial name for mass-produced, superheterodyne radio receivers that used five vacuum tubes in their design. These radio sets were designed to receive amplitude modulation (AM) broadcasts in the medium wave band, and were manufactured in the United States from the mid-1930s until the early 1960s.
Tubes used in AC-powered radio receivers of the early 1930s 2A3 – Directly heated power triode, used for AF output stages in 1930s–1940s audio amplifiers and radios. 2A5 – Power Pentode (Except for heater, electronically identical to types 42 and 6F6) 2A6 – Dual diode, high-mu triode (Except for heater, electronically identical to type 75)
Vintage equipment in the Queen Mary radio room. Some hobbyists see vintage radio operation as a valuable asset to help preserve the history and heritage of radio for future generations. [3] They sometimes assist in the restoration and operation of vintage radio equipment for historical exhibits, museums, and historic ships or aircraft. [6]
The BP-10 proved so popular that Zenith, Motorola, Emerson, and other radio manufacturers produced similar pocket radios based on RCA's miniature tubes. [21] Several of these pocket radios were introduced in 1941 and sold until the suspension of radio production in April 1942 for the duration of World War II.
a detector, which extracts the audio signal from the radio carrier signal by rectifying it. optionally, but almost always included, one or more audio amplifier stages which increase the power of the audio signal. Leutz 9-tube receiver from 1927 clearly shows the component parts of a TRF set. Each RF stage is in a separate compartment.
CBS Radio Mystery Theater; Earplay; The Firesign Theatre; The Fourth Tower of Inverness; Further Adventures of Sherlock Holmes; The General Mills Radio Adventure Theater; Hollywood Theater of the Ear; Imagination Theater; NPR Playhouse; NPR's serialized adaptations of Star Wars, The Empire Strikes Back, and Return of the Jedi; A Prairie Home ...
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