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Amateur radio equipment of past eras like the 1940s, 50s, and 60s that are separate vacuum tube transmitters and receivers (unlike modern transceivers) are an object of nostalgia, and many see rehabilitation and on-air use by enthusiasts. [18] [19] EF Johnson Viking Ranger transmitter, c. 1958. Vintage operating activity is not limited to the ...
A number of radio amateurs also build their own tube receivers and AM voice transmitters. [9] As late as the 1960s, glowbugs were part of many beginner ham stations because of their simple, tube-based designs. Glowbugs are popular among QRP enthusiasts and others with a penchant for constructing their own equipment. Enthusiasts may assemble ...
A family listening to a crystal radio in the 1920s Greenleaf Whittier Pickard's US Patent 836,531 "Means for receiving intelligence communicated by electric waves" diagram US Bureau of Standards 1922 Circular 120 "A simple homemade radio receiving outfit" taught Americans how to build a crystal radio.
Modify your television set to accept a baseband video signal for better picture quality when using a computer or VCR. John Soluk: 54/4: April 1983 Build your own custom cases: Give your projects a profession look with custom-built cases. Robert Grossblatt: 54/4: April 1983 VLF-HF active antennas: Part 3.
The history of amateur radio, dates from the dawn of radio communications, with published instructions for building simple wireless sets appearing at the beginning of the twentieth century. [1] Throughout its history, amateur radio enthusiasts have made significant contributions to science , engineering , industry , and social services .
Interest in older media formats like cassette and VHS tapes certainly seems to have ballooned in recent years, with contemporary pop stars releasing their new music on cassette as well as vinyl.
Image credits: bullettbailey #7. The Rats of Tobruk. An Australian garrison in Tobruk during WWII that became infamous during an 8 month siege against an armored German/Italian Afrika corps.
By 1927 there were over fifty radio stations and 1.5 million radio sets in the New York metropolitan area. There were so many stations it was common for stations to share the same frequency at different times during the day. [4] At this time radio was regulated by the Department of Commerce, as authorized by the Radio Act of 1912. However, this ...