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This Post Has Been Edited by the Author
In Reply to: RE: I thought that the KT77 is a beam tetrode... posted by Vinyl Valet on March 14, 2023 at 21:09:40
No, a true pentode (el34) has a cathode, control grid, screen grid, suppressor grid and a plate. No beam forming plate at all. Just a cathode a plate and three grids in between.
some people call a beam power tube a pentode because they consider the beam forming plate to be a fifth element.
A beam power tube does not function exactly like a power pentode but close enough that it can be a direct drop in replacement.
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