Rich says:
> It is my
>opinion that operating a tetrode near or above its grounded-screen
>resonance is an open invitation to parasitic oscillation.
It's a good chance that it will oscillate at the working frequency as well
as/instead of at a parasitic frequency................Murphy rules, OK?
The worst device for parasitics I ever came across was a tunnel diode
oscillator - 5 different simultanieus parasitice between 10Hz and 4 GHz.
73
Peter G3RZP
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