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6Ж7, Tube 6Ж7; Röhre 6Ж7 ID18865, Vacuum Pentode | Radiomuseum.org
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6J7GT @ The Valve Museum
RCA 6J7 Audio pentode, sharp cut-off
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6J7-US
Le journal technique de Bell System . S3^ -> .» ^ ^^^i Fig. 5 — vue éclatée de l'électrovanne J-7. •18 THE BELL SYSTEM TECHNICAL JOURNAL, MAI 1957. Figure 6 —
6J7 @ The Valve Museum
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