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37-630 code 125 missing all 110 pF caps
Arran
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#30

04-02-2026, 06:05 PM
The Micamold resistor is the cathode resistor for the 6K7G tube, I wonder if the change in value from 700 Ohm to 400 Ohm was in aid of eliminating the need for extra mica caps. By changing that resistor they made the effective grid bias of the 6K7G slightly less negative by making the cathode less positive with respect to B-.
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Arran
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RE: 37-630 code 125 missing all 110 pF caps - by Arran - 04-02-2026, 06:05 PM



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