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File:Trio Of 826 Transmitting Triode Vacuum Tubes, RCA (Left) and Ken Rad (Middle & Right), Made In USA (36229884105).jpg - Wikimedia Commons
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File:Vintage RCA Tube Table Radio, Model 46X11, Mahogany Plastic, 5 tubes, BC-SW, AC-DC, Circa 1940 (13246969044).jpg - Wikimedia Commons
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