@rcgPilot Wasp replica - Tube Collectors Association

Part 1 - Early Tube Developments and the Improvement of Filament Emissivity. 55-4-50@ Part 2 - The Sodion and Donle-Bristol Corporation Tubes 53-1-33@ Kirsten, Charles C. "Obsoleting" a Vintage Tube Tester 42-1-20@ Supreme Model 45 Tube Tester, The, and the 1933 Tube Pin Standard R20-213@ Kunde, Keith. About That Second Diode 46-3-58@ Magers ... ................
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