File:Superheterod radio.JPG
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Summary
| 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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:14, 11 July 2012 | | 1,500 × 983 (364 KB) | Gisling |
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