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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.
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]
Eldorado Electrodata was founded in Oakland, California, as the Sargent-Rayment Company in 1927 by Ed Sargent and Lyndon C. Rayment.Among the company's first offerings was a TRF receiver called the Sargent-Rayment 7, which gained national renown after being advertised in Radio World. [1]
RCA antique radios, and early color television receivers such as the RCA Merrill/CT-100, are among the more sought-after collectible radios and televisions, due to their popularity during the golden age of radio and the historic significance of the RCA name, as well as their styling, manufacturing quality and engineering innovations. Most ...
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 ]
Listing price on eBay: $2,500 There were countless Japanese-made, cartoon-like ceramic figurines made during the 1950s, and some of the most valuable (and collectible) are vintage salt and pepper ...
Although the TRF receiver is used in a few applications, it has practical disadvantages which make it inferior to the superheterodyne receiver below, which is used in most applications. [9] The drawbacks stem from the fact that in the TRF the filtering, amplification, and demodulation are done at the high frequency of the incoming radio signal.
Enjoy a classic game of Hearts and watch out for the Queen of Spades!