Vol. 4, No. 1April 18, 2023July 19, 2024By Libby76View FullscreenOn the Cover The inner structure of the ill-fated 6AE4 magnetronIn this issue“Missing” Tubes – Ever WonderThe GE UV-213 Rectifier“DOD” TubesAmperex’s Inside-Out TubeThe Nuvi-StoryLenkurt and Pointy-Pinned SN7’sTube Tester’s Invade SupermarketsIndex to 1999-2001 Pubs
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