[Amps] grounding grids

Fuqua, Bill L wlfuqu00 at uky.edu
Sat Aug 1 21:24:21 PDT 2009


The question we should ask now what are our preferences in grounding grids.
Mine is as direct to ground as possible with the least series impedance. 

73
Bill wa4lav
PS Has the gentleman trying out the 4cx250Bs in grounded grid (control grid connected to cathode) gotten any results?
I would like to know how it turned out.

73
Bill wa4lav

________________________________________
From: amps-bounces at contesting.com [amps-bounces at contesting.com] On Behalf Of Herzog [herzog at frontiernet.net]
Sent: Saturday, August 01, 2009 6:44 PM
To: Ham-amps
Subject: [Amps] grounding grids

RE:  What makes you think that the impedance between the grid and
common changes by a factor of 10:1 between 3.5 and 29.7 MHz?
73
Gary K4FMX
=============
That is a red herring.  Because the frequency ratio is about 10 to one
is the answer.
    This begs the question as to whether the impedance is enough to care
about, and cap or inductive,  or a series resonance.  Such wonderful
considerations are why we can discuss this matter after over 50 years.
Wil
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