In article , Uwe
writes:

When I increase the plate voltage to 325V my 2. grid runs about 280V and the
plate current increases to about 65 mA. I don't really dare to do that
without knowing the max values on that tube.
I guess I could lower the 2. grid voltage by increasing the value of the
resistor connectd to it.
I don't know if that would lower my plate current to what you get.

Uwe,

How are you tuning up the transmitter? Are you adjusting the plate capacitor
for minimum current?

73 de Jim, N2EY