What is the value of the plate choke?
What is the value of the plate choke bypass cap?
How much power out are you getting with 20 watts drive?
73,
Ken W2DTC
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Applying 20 watts of drive the amplifier tunes and loads properly grid
> current loading down to around 60ma anode current to around 200ma...If I
> increase the drive beyond 20 watts the anode current immediately shoots
> to 800ma and the grid current off the scale tripping the protection
> circuit.
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