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File:Regency transistor radio.jpg

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Camera location37° 37′ 07.01″ N, 122° 23′ 13.17″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo
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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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Masomi 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.
Marubucin Gregory F. Maxwell <gmaxwell@gmail.com> PGP:0xB0413BFA
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(Sake amfani da wannan fayil)		 GFDL-1.2
I, the copyright holder of this work, hereby publish it under the following license:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 only as published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. 1.2 only

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12 Nuwamba 2006

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37°37'7.014"N, 122°23'13.175"W

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na yanzu05:23, 13 Nuwamba, 2006Wadar sufa ta zubin 05:23, 13 Nuwamba, 20061,444 × 2,176 (609 KB)GmaxwellClone out distraction in upper right corner.
03:48, 13 Nuwamba, 2006Wadar sufa ta zubin 03:48, 13 Nuwamba, 20061,444 × 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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