I have an amp I built a few years ago. 10 - 160m YC156   The tube has high 
capacitance
and operating on 10 and 15m results in higher plate current at reduced output 
(600 watts). I
knew this going in and was curious if the problem can be solved.  I am using a 
pi tank circuit.
Plate v = 5300vdc
I have heard  (but not tried)  an inductor between the plate and blocking cap 
will help.  Probably around
.6 uh.
If I recall correctly the total capacitance of the mounted  tube and tuning cap 
was around  65pf
    Anyone have experience or comments on this application?   
TIA for any comments
Lynn  NO9Z
      
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