This was used on newer tubes (3-500Z - ect) to raise the resonance of the grid
to control parasitics.
It is not needed for older tubes
STEVEN GRANT W4IIV
--- On Wed, 7/29/09, Bill Fuqua <wlfuqu00@uky.edu> wrote:
From: Bill Fuqua <wlfuqu00@uky.edu>
Subject: Re: [Amps] grounding grids
To: "Herzog" <herzog@frontiernet.net>, "Ham-amps" <amps@contesting.com>
Date: Wednesday, July 29, 2009, 9:28 AM
Maybe to measure individual grid currents?
That would be the only reason I can think of.
73
Bill wa4lav
At 08:35 PM 7/27/2009 -0400, Herzog wrote:
>RE: > >Hi.
> > >This has probable been asked before on this group,but... Is it good
> > >practice to physically tie the grids to ground via one connection,or via
> > >low value resistors and decoupling capacitors. I was going to go for VHF
> > >practice and go for direct grounding,but would like some comments before
> > >progressing this project.
> > > 73`s Jon
>
>REPLY:
>
>I'm curious - what would be the reason for using resistors and
>decoupling caps?
>
>73, Bill W6WRT
>===========================
>Herzog proffers a reason, to be able to measure the grid current.
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