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Radios - Champion SPR-910 |  |
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Radios Champion SPR-910 AC operated Spark plug radio. 8 transistors, 1 diode, 1 thermistor and 1 silicon diode. Output 250 mw. RIC Japan. R I C SPR-B403-110-B PAT.   Here's what it looked like while I was working on it. It works very well now. 
The Vintage Electronics Expo Saturday, January 20, 2024 9am-4pm
Southfield Pavilion, 26000 Evergreen Rd, Southfield, MI 
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