Fil:Regency transistor radio.jpg

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Kameraposition37° 37′ 07,01″ N, 122° 23′ 13,17″ W Kartographer map based on OpenStreetMap.Dette og andre billeder på deres position på: OpenStreetMap - Google Earthinfo
Beskrivelse
English: Regency TR-1 transistor radio, the first commercial transistor radio, which debuted October 18, 1954. Designed by Texas Instruments and IDEA, the TR-1 had a superheterodyne circuit with only 4 transistors: a combined local oscillator/mixer, two IF amplifiers, and one audio amplifier. Within one year of release, TR-1 sales approached 100,000. The transistor radio was the most popular communications device in history, with billions manufactured during the 1960s and 1970s. Courtesy of Steve Kushman.
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Kilde Photo by uploader, taken at The History of Audio: The Engineering of Sound, an exhibition of the San Francisco Airport Museums[1] in SFO Airport, Terminal 3 from 2006-09 to 2007-05.
Ophavsmand Gregory F. Maxwell <gmaxwell@gmail.com> PGP:0xB0413BFA
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Dato/tidThumbnailDimensionerBrugerKommentar
nuværende13. nov 2006, 07:23Thumbnail af versionen fra 13. nov 2006, 07:231.444 × 2.176 (609 KB)GmaxwellClone out distraction in upper right corner.
13. nov 2006, 05:48Thumbnail af versionen fra 13. nov 2006, 05:481.444 × 2.176 (542 KB)Gmaxwell{{Location dec|37.618615|-122.386993|scale:1000}} {{Information |Description=Regency TR-1 transistor radio circa 1956. Courtesy of Steve Kushman. |Source=Photo by uploader, taken at ''The History of Audio: The Engineering of Sound'', an exhibition of the

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