22nd Sep 2022, 10:40 am
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#14
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Heptode
Join Date: May 2017
Location: Konongo, Ghana
Posts: 513
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Re: Quad 22 KT66 to 6L6 with Cathode resistor increase?
Like you wrote, Philips kept on calling them pentodes but in later times sometimes added that they were 'beam pentodes'.
Two examples of this:
https://frank.pocnet.net/sheets/010/e/EL503.pdf
https://frank.pocnet.net/sheets/010/p/PL504.pdf
__________________
Robert
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