philco 41-280 volume control

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Radioengineer
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City: Pawnee,IL

03-10-2021, 02:42 PM

If I ground the grid on the 7C6 no audio.They are using -.6v bias there.

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RE: philco 41-280 volume control - by Radioengineer - 03-10-2021, 02:42 PM

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