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-----Original message-----
From: Rich Measures <measures@vc.net>
To: Lars Harlin <harlins@swipnet.se>; amps@contesting.com =
<amps@contesting.com>
To: <amps@contesting.com>
Date: den 30 oktober 1998 00:14
Subject: Re: [AMPS] RE: QY5-3000
>
>>......Lars wrote:
>>Myself, I have built all three amps using G2DAF design. A very clever =
and=20
>>clean design wich
>>I highly recommend! If you are interested I can mail you some drawings =
as=20
>>well as plots from IMD measurements.... ...
>
>When a G2DAF amplifier amplifier is tested for IMD by applying a =
two-tone=20
>signal, the screen potential remains constant. If no grid current =
flows=20
>during the test, the tube is operating in Class AB1. Typical test=20
>results is a total IMD that is quite acceptable. However, during SSB=20
>voice modulation, the screen potential fluctuates widely and the IMD=20
>increases significantly. // Eimac recommends a constant screen=20
>potential for best linearity. =20
>- later
>..
>
>Rich. Measures. Web site: www.vcnet.com/measures
>
>
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Good Morning Rich!
Good to see you in good health! I do consider you a very fine technican =
and even more important -
a guy with a good sense of humour!=20
However, guess you will have to let go of "Eimacs hand" to broaden your =
sight, and maybe even, learn something new!=20
Well, if noone can=B4t come up with something new, I guess there is no =
point starting this discussion all over again, as we covered the subject =
quite deeply about a year ago.
Anyway, as I said, since then two more DAF amps has seen the light here =
and
there are more to come.....
Best 73s to you all,
Lars/SM3BDZ
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<DIV>-----Original message-----<BR>From: Rich Measures <<A=20
href=3D"mailto:measures@vc.net";>measures@vc.net</A>><BR>To: Lars =
Harlin <<A=20
href=3D"mailto:harlins@swipnet.se";>harlins@swipnet.se</A>>; <A=20
href=3D"mailto:amps@contesting.com";>amps@contesting.com</A> <<A=20
To: <amps@contesting.com>
href=3D"mailto:amps@contesting.com";>amps@contesting.com</A>><BR>Date: =
den 30=20
oktober 1998 00:14<BR>Subject: Re: [AMPS] RE:=20
QY5-3000<BR><BR><BR>><BR>>>......Lars wrote:<BR>>>Myself, =
I have=20
built all three amps using G2DAF design. A very clever and =
<BR>>>clean=20
design wich<BR>>>I highly recommend! If you are interested I can =
mail you=20
some drawings as <BR>>>well as plots from IMD measurements....=20
...<BR>><BR>>When a G2DAF amplifier amplifier is tested for IMD by =
applying a two-tone <BR>>signal, the screen potential remains =
constant. =20
If no grid current flows <BR>>during the test, the tube is operating =
in Class=20
AB1. Typical test <BR>>results is a total IMD that is quite=20
acceptable. However, during SSB <BR>>voice modulation, the =
screen=20
potential fluctuates widely and the IMD <BR>>increases =
significantly. =20
// Eimac recommends a constant screen <BR>>potential for best=20
linearity. <BR>>- later<BR>>..<BR>><BR>>Rich.=20
Measures. Web site: <A=20
href=3D"http://www.vcnet.com/measures";>www.vcnet.com/measures</A><BR>>=
<BR>><BR>-------------------------------------------------------------=
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---<BR><BR></DIV>
<DIV> </DIV>
<DIV>Good Morning Rich!<BR><BR>Good to see you in good health! I do =
consider you=20
a very fine technican and even more important -<BR>a guy with a good =
sense of=20
humour! <BR><BR>However, guess you will have to let go of "Eimacs=20
hand" to broaden your sight, and maybe even, learn something new!=20
<BR><BR>Well, if noone can´t come up with something new, I guess =
there is=20
no point starting this discussion all over again, as we covered the =
subject=20
quite deeply about a year ago.<BR><BR>Anyway, as I said, since then two =
more DAF=20
amps has seen the light here and<BR>there are more to =
come.....<BR><BR>Best 73s=20
to you all,<BR><BR>Lars/SM3BDZ<BR></DIV></BODY></HTML>
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