On 9/14/2016 11:20 PM, K2CB wrote:
> I recall reading in the past that directly grounding the grids
> requires increased drive. Thus my suspicion that the new inductors
> may be the culprit.
Added inductance in the grid lead makes a tube *harder* to drive.
Compare the 811/572B and a ceramic triode like the 3CX800 or 8877.
For good info on the TL-922 see the information by W8JI:
http://www.w8ji.com/tl922_mods_parasitic.htm
and Kessler Engineering:
http://kesslerengineeringllc.com/download/922/TL922_Revival.pdf
73,
... Joe, W4TV
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