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Magic-Tone 504
Radio Development & Research Corp. (RDR) 504, 1947
"Magic-Tone" Liquor bottle, AM broadcast band, TRF. Tubes: 12SK7, 12SQ7, 50L6, 35Z5.

Rider Perpetual Troubleshooter's Manuals
Brand Model Volume Page Pub year
MISC-Radio Development & Research Corp. 504 17 10 1947
Michigan Antique Radio Club (MARC)
The Vintage Electronics Expo Saturday, January 20, 2024 9am-4pm
Southfield Pavilion, 26000 Evergreen Rd, Southfield, MI
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