[AMPS] GI7B Bias requirements (and methods)

[Douglas.R.Snowden@noaa.gov (Douglas R Snowden)]

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I am in the early stage of building a pair of Russian GI7B triodes
in GG.  I have a 24vct filamanet transformer, so I plan on using
it and doing the filaments in series since they are 12.6 v each. I
have a ferrite choke wound for the filament xfmr-> tubes.  Has
anyone built one of these?  If so, what was the cathode bias they
used, how how did they produce it?  I know that the typical GG
amp would use a zener or series diodes in the cathode, but I suspect I
will
need something more than 7-8 volts.

73 Doug N4IJ


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