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-------Original Message-------
From: Lamb
To: <amps@contesting.com>
Date: Friday, April 27, 2001 09:27:19 AM
To: steven grant
Subject: Re: [AMPS] Buffer/Driver Stage for 4-1000 Amp
Hi Steven:
One question raised by your comment. Grounded grid, cathode driven will
have a natural inverse feedback that improves the imd performance. I reca=
ll
that the grounded grid 4-1000 has about -34 db of distortion. If the
inverse feedback improves by 9 db, that would imply that the distortion o=
f
the grid driven 4-1000 would be under -30 db.
Have you made any measurements of your distortion, or do you have the
published specs of the tube in grid driven configuration?
73, Colin K7FM
OOOPS sorry about the stationery forgot to turn it off
(THAT WAS WHAT THE ATTACHMENT WAS)
I will get that to you later Colin has to dig everything up to make su=
re im right
I used an old handbook for the specs and has to dig it up
73
STEVEN GRANT W4IIV =20
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<DIV id=3DIncrediOriginalMessage><I>-------Original Message-------<=
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<DIV> </DIV>
<DIV id=3Dreceivestrings>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>From:</B></I> <A=20
href=3D"mailto:k7fm@teleport.com";>Lamb</A></DIV>
To: <amps@contesting.com>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Date:</B></I> Friday=
, April 27,=20
2001 09:27:19 AM</DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>To:</B></I> <A=20
href=3D"mailto:w4iiv@arrl.net";>steven grant</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Subject:</B></I> Re:=
[AMPS]=20
Buffer/Driver Stage for 4-1000 Amp</DIV></DIV>
<DIV> </DIV>
<P>Hi Steven:<BR><BR>One question raised by your comment. Grounded =
grid,=20
cathode driven will<BR>have a natural inverse feedback that improve=
s the=20
imd performance. I recall<BR>that the grounded grid 4-1000 has abou=
t -34=20
db of distortion. If the<BR>inverse feedback improves by 9 db, that=
would=20
imply that the distortion of<BR>the grid driven 4-1000 would be und=
er -30=20
db.<BR><BR>Have you made any measurements of your distortion, or do=
you=20
have the<BR>published specs of the tube in grid driven=20
configuration?<BR><BR>73, Colin K7FM</P>
<P> </P>
<P> </P>
<P>OOOPS sorry about the stationery forgot to tur=
n it=20
off</P>
<P>(THAT WAS WHAT THE ATTACHMENT WAS)</P>
<P>I will get that to you later Colin has to=
dig=20
everything up to make sure im right</P>
<P>I used an old handbook for the specs and has to dig it up</=
P>
<P>73</P>
<P> &nbs=
p; =20
STEVEN GRANT W4IIV </P> </TD=
>
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