Tube Collectors Associationtubecollectors.org/eimac/archives/6816(71).pdf · The EIMAC 6816, 6884,...
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Tube Collectors Associationtubecollectors.org/eimac/archives/6816(71).pdf · The EIMAC 6816, 6884, and 7843 are compact external anode ceramic/metal radial-beam tetrodes for use in