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Radios - Perine Duplex 1920s |  |
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Radios Perine Duplex, early 1920s 1 tube crystal radio with original manual. Perine Radio Co. 1411 University Ave. S. E., Minneapolis, Minn. Works in crystal, TRF and Regenerative radio modes. As shown, it is configured for regenerative mode. 
The next Vintage Electronics Expo
will be on Saturday, January 25, 2025
at the Oakland Expo Center, 2212 Mall Dr E, Waterford, MI 
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