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A foxhole radio is a simple crystal sets radio receiver cobbled together from whatever parts one could make (which were very few indeed) or scrounged from junked equipment. Such a set typically used salvaged domestic wiring for an antenna, a double-edged safety-razor blade and pencil lead (or bent safety-pin) for a detector, and a tin can ...
The ARRL published "Vintage Radio", a collection of articles from QST magazine describing vintage equipment, restoration, and operation. [ 33 ] The Antique Wireless Association of Southern Africa is devoted to the "maintenance and preservation of our amateur heritage" for enthusiasts of older types of short wave radios and amateur equipment ...
The AN/ARC-5 Command Radio Set is a series of radio receivers, transmitters, and accessories carried aboard U.S. Navy aircraft during World War II and for some years afterward. It is described as "a complete multi-channel radio transmitting and receiving set providing communication and navigation facilities for aircraft.
Today, many National radios are collected, restored and operated by vintage amateur radio enthusiasts. Through the 1970s and 1980s, National survived as a government contractor and ceased development and production of civilian equipment. However, by 1991, after continuing difficulties, the company ceased trading.
The Cardwell Condenser Corporation purchased all remaining stocks, and in 1973 the Hammarlund factory closed. At the time of its dissolution, Hammarlund was among the USA's very oldest producers of radio equipment. [2] Today, many Hammarlund radios are collected, restored and used by vintage amateur radio enthusiasts.
For example, a 1933 Murphy radio with essentially the same circuit had different models for AC supply, DC supply, and battery operation. [1] The introduction of AC/DC circuitry allowed a single model to be used on either AC or DC mains as a selling point, [ 2 ] and some such models added "Universal" to their name [ 3 ] (such sets usually had ...
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