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Radio sets from before 1920 are rarities, and are probably military artifacts. Sets made prior to approximately 1924 were usually made on wooden breadboards, in small cupboard style cabinets, or sometimes on an open sheet metal chassis. Homemade sets remained a strong sector of radio production until the early 1930s.
The earliest radio programs of the 1920s were largely unsponsored; radio stations were a service designed to sell radio receivers. In early 1922, American Telephone & Telegraph Company (AT&T) announced the beginning of advertisement-supported broadcasting on its owned stations, and plans for the development of the first radio network using its ...
The Majestic "Smart Set" line of less expensive, but stylish, table radios was introduced in mid-1933 and enjoyed strong sales. The model 161 (pictured at top) produced in 1933 was a superheterodyne receiver with Art Deco -style chrome decorative trim adorning the loudspeaker grill cloth and a hand-rubbed mahogany cabinet, having a list price ...
In April, the local owners of Price Tower sold an undisclosed amount of historic Frank Lloyd Wright and Bruce Goff artifacts, which are now up for sale by a Texas-based gallery.
The Boy Scouts have kept the construction of a radio set in their program since the 1920s. A large number of prefabricated novelty items and simple kits could be found through the 1950s and 1960s, and many children with an interest in electronics built one. Building crystal radios was a craze in the 1920s, and again
In the 1920s, the Westinghouse company bought Lee de Forest's and Edwin Armstrong's patent. During the mid-1920s, Amplifying vacuum tubes revolutionized radio receivers and transmitters. Westinghouse engineers developed a more modern vacuum tube. The first radios still required batteries, but in 1926 the "battery eliminator" was introduced to ...
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.
As of December 2024, a 1920 Indian Head Gold Coin in circulated condition is worth between $20,000 and $75,000. But that value rises to as much as $2 million for specimens in pristine ...
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