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File:Superheterod radio.JPG

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Captions

Sony TR63 portable radio internals

Summary edit

Description
English: A cheap transistor radio, a simple type of AM portable radio, with its back open to show parts. It uses a simple five-transistor superheterodyne circuit. Transistor radios are the most popular electronic communications devices in history, with billions manufactured in the 1960s and 1970s.
中文（简体）：超外差收音机
Date Taken on 11 July 2012
Source Own work
Author Gisling

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current12:14, 11 July 2012Thumbnail for version as of 12:14, 11 July 20121,500 × 983 (364 KB)Gisling (talk | contribs)

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