[AMPS] Re: SV: G2DAF

John Fielding johnf@futurenet.co.za
Sun, 1 Nov 1998 11:34:47 +0200


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Run some unbiased tests!  Good way to kill a tube!  Hi - John	ZS5JF

----------
> From: km1h@juno.com
> To: amps@contesting.com
> Subject: [AMPS] Re: SV: G2DAF
> Date: Saturday, October 31, 1998 7:53 PM
> 
> 
> 
> On Sat, 31 Oct 1998 18:17:38 +0200 "Lars Harlin" <harlins@swipnet.se>
> writes:
> 
> >>Tnx Chris for interesting info.
> >>I'm no expert on G2DAF history or technic,
> >>but in SM some people are using the G2DAF design
> >>in very high power amps on SSB.
> >>I do not belive G2DAF intensions was the same.
> >>As you know, on the AMP reflector some people
> >>dump the G2DAF as a very poor design
> >>while others says it's a great design.
> >>For me the thing is to learn who is right
> >>in this matter.
> >>73's Hakan SM3LBN
> >
> >
> >Guess you have a problem there Hakan,  who to belive, me or Rich and =
> >others.....Thats not easy...
> >Maybe you should leave that triode-crap behind, wich are so hungry for 
> >=
> >drivepower that you need a
> >SB220 or similar between exiter and amp.
> 
> Not if you use a YC-156 style triode Lars.
> Actually I would probably prefer a tube that requires an IPA. Then I
> could operate with enough power to be heard most of the time and then
> kick in the big amp when necessary. A 10dB step increase will not raise
> as much comment as 20dB +.
> 
> I run a 1200W tetrode amp on 6M and drive with 12-15W. It is a a real
> pain at times to work locals, etc with the low power and yet the 1200W is
> overkill.
> 
> 
> >
> >Guess the best way to learn is to do! Build one of your own, and join 
> >=
> >the proud crew...! ;)
> 
> 
> The following is to the group:
> Instead of a lot of unsubstantiated blustering from both sides of the DAF
> issue how about some real data from a spectrum analyzer? Not only the
> basic 2 tone test but a full analysis under voice condx. 
> I have a spectrum analyzer as do many others....bring a DAF amp to me and
> I'll run some honest unbiased tests.
> 
> 73   Carl   KM1H
> >
> >Go for it Hakan!
> >
> >73 de Lars/SM3BDZ
> >
> >
> >------=_NextPart_000_0017_01BE04FA.BD838200
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> >	charset="iso-8859-1"
> >Content-Transfer-Encoding: quoted-printable
> >
> ><!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
> ><HTML>
> ><HEAD>
> >
> ><META content=3Dtext/html;charset=3Diso-8859-1 =
> >http-equiv=3DContent-Type>
> ><META content=3D'"MSHTML 4.72.3110.7"' name=3DGENERATOR>
> ></HEAD>
> ><BODY bgColor=3D#ffffff>
> ><DIV>-----Original message-----<BR>From: Hakan Ericsson &lt;<A=20
> >href=3D"mailto:sm3lbn@swipnet.se">sm3lbn@swipnet.se</A>&gt;<BR>Date: 
> >den =
> >31=20
> >oktober 1998 11:57<BR>&Auml;mne: SV: G2DAF<BR><BR><BR>&gt;Tnx Chris 
> >for=20
> >interesting info.<BR>&gt;I'm no expert on G2DAF history or =
> >technic,<BR>&gt;but=20
> >in SM some people are using the G2DAF design<BR>&gt;in very high power 
> >=
> >amps on=20
> >SSB.<BR>&gt;I do not belive G2DAF intensions was the same.<BR>&gt;As 
> >you =
> >know,=20
> >on the AMP reflector some people<BR>&gt;dump the G2DAF as a very 
> >poor=20
> >design<BR>&gt;while others says it's a great design.<BR>&gt;For me the 
> >=
> >thing is=20
> >to learn who is right<BR>&gt;in this matter.<BR>&gt;73's Hakan=20
> >SM3LBN<BR><BR><BR>Guess you have a problem there Hakan,&nbsp; who to =
> >belive, me=20
> >or Rich and others.....Thats not easy...<BR>Maybe you should leave 
> >that=20
> >triode-crap behind, wich are so hungry for drivepower that you need =
> >a<BR>SB220=20
> >or similar between exiter and amp.<BR><BR>Guess the best way to learn 
> >is =
> >to do!=20
> >Build one of your own, and join the proud crew...! ;)<BR><BR>Go for 
> >it=20
> >Hakan!<BR><BR>73 de Lars/SM3BDZ<BR></DIV></BODY></HTML>
> >
> >------=_NextPart_000_0017_01BE04FA.BD838200--
> >
> >
> >--
> >FAQ on WWW:               http://www.contesting.com/ampfaq.html
> >Submissions:              amps@contesting.com
> >Administrative requests:  amps-REQUEST@contesting.com
> >Problems:                 owner-amps@contesting.com
> >Search:                   http://www.contesting.com/km9p/search.htm
> >
> >
> 
> ___________________________________________________________________
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<html><head></head><BODY bgcolor=3D"#FFFFFF"><p><font size=3D2 =
color=3D"#000000" face=3D"Arial">Run some unbiased tests! &nbsp;Good way =
to kill a tube! &nbsp;Hi - John&#009;ZS5JF<br><br>----------<br>&gt; =
From: <font color=3D"#0000FF"><u>km1h@juno.com</u><font =
color=3D"#000000"><br>&gt; To: <font =
color=3D"#0000FF"><u>amps@contesting.com</u><font =
color=3D"#000000"><br>&gt; Subject: [AMPS] Re: SV: G2DAF<br>&gt; Date: =
Saturday, October 31, 1998 7:53 PM<br>&gt; <br>&gt; <br>&gt; <br>&gt; On =
Sat, 31 Oct 1998 18:17:38 +0200 &quot;Lars Harlin&quot; &lt;<font =
color=3D"#0000FF"><u>harlins@swipnet.se</u><font =
color=3D"#000000">&gt;<br>&gt; writes:<br>&gt; <br>&gt; &gt;&gt;Tnx =
Chris for interesting info.<br>&gt; &gt;&gt;I'm no expert on G2DAF =
history or technic,<br>&gt; &gt;&gt;but in SM some people are using the =
G2DAF design<br>&gt; &gt;&gt;in very high power amps on SSB.<br>&gt; =
&gt;&gt;I do not belive G2DAF intensions was the same.<br>&gt; =
&gt;&gt;As you know, on the AMP reflector some people<br>&gt; =
&gt;&gt;dump the G2DAF as a very poor design<br>&gt; &gt;&gt;while =
others says it's a great design.<br>&gt; &gt;&gt;For me the thing is to =
learn who is right<br>&gt; &gt;&gt;in this matter.<br>&gt; &gt;&gt;73's =
Hakan SM3LBN<br>&gt; &gt;<br>&gt; &gt;<br>&gt; &gt;Guess you have a =
problem there Hakan, &nbsp;who to belive, me or Rich and =3D<br>&gt; =
&gt;others.....Thats not easy...<br>&gt; &gt;Maybe you should leave that =
triode-crap behind, wich are so hungry for <br>&gt; &gt;=3D<br>&gt; =
&gt;drivepower that you need a<br>&gt; &gt;SB220 or similar between =
exiter and amp.<br>&gt; <br>&gt; Not if you use a YC-156 style triode =
Lars.<br>&gt; Actually I would probably prefer a tube that requires an =
IPA. Then I<br>&gt; could operate with enough power to be heard most of =
the time and then<br>&gt; kick in the big amp when necessary. A 10dB =
step increase will not raise<br>&gt; as much comment as 20dB +.<br>&gt; =
<br>&gt; I run a 1200W tetrode amp on 6M and drive with 12-15W. It is a =
a real<br>&gt; pain at times to work locals, etc with the low power and =
yet the 1200W is<br>&gt; overkill.<br>&gt; <br>&gt; <br>&gt; =
&gt;<br>&gt; &gt;Guess the best way to learn is to do! Build one of your =
own, and join <br>&gt; &gt;=3D<br>&gt; &gt;the proud crew...! ;)<br>&gt; =
<br>&gt; <br>&gt; The following is to the group:<br>&gt; Instead of a =
lot of unsubstantiated blustering from both sides of the DAF<br>&gt; =
issue how about some real data from a spectrum analyzer? Not only =
the<br>&gt; basic 2 tone test but a full analysis under voice condx. =
<br>&gt; I have a spectrum analyzer as do many others....bring a DAF amp =
to me and<br>&gt; I'll run some honest unbiased tests.<br>&gt; <br>&gt; =
73 &nbsp;&nbsp;Carl &nbsp;&nbsp;KM1H<br>&gt; &gt;<br>&gt; &gt;Go for it =
Hakan!<br>&gt; &gt;<br>&gt; &gt;73 de Lars/SM3BDZ<br>&gt; &gt;<br>&gt; =
&gt;<br>&gt; &gt;------=3D_NextPart_000_0017_01BE04FA.BD838200<br>&gt; =
&gt;Content-Type: text/html;<br>&gt; =
&gt;&#009;charset=3D&quot;iso-8859-1&quot;<br>&gt; =
&gt;Content-Transfer-Encoding: quoted-printable<br>&gt; &gt;<br>&gt; =
&gt;&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD W3 =
HTML//EN&quot;&gt;<br>&gt; &gt;&lt;HTML&gt;<br>&gt; =
&gt;&lt;HEAD&gt;<br>&gt; &gt;<br>&gt; &gt;&lt;META =
content=3D3Dtext/html;charset=3D3Diso-8859-1 =3D<br>&gt; =
&gt;http-equiv=3D3DContent-Type&gt;<br>&gt; &gt;&lt;META =
content=3D3D'&quot;MSHTML 4.72.3110.7&quot;' =
name=3D3DGENERATOR&gt;<br>&gt; &gt;&lt;/HEAD&gt;<br>&gt; &gt;&lt;BODY =
bgColor=3D3D#ffffff&gt;<br>&gt; &gt;&lt;DIV&gt;-----Original =
message-----&lt;BR&gt;From: Hakan Ericsson &amp;lt;&lt;A=3D20<br>&gt; =
&gt;href=3D3D&quot;<font =
color=3D"#0000FF"><u>mailto:sm3lbn@swipnet.se</u><font =
color=3D"#000000">&quot;&gt;<font =
color=3D"#0000FF"><u>sm3lbn@swipnet.se</u><font =
color=3D"#000000">&lt;/A&gt;&amp;gt;&lt;BR&gt;Date: <br>&gt; &gt;den =
=3D<br>&gt; &gt;31=3D20<br>&gt; &gt;oktober 1998 =
11:57&lt;BR&gt;&amp;Auml;mne: SV: =
G2DAF&lt;BR&gt;&lt;BR&gt;&lt;BR&gt;&amp;gt;Tnx Chris <br>&gt; =
&gt;for=3D20<br>&gt; &gt;interesting info.&lt;BR&gt;&amp;gt;I'm no =
expert on G2DAF history or =3D<br>&gt; =
&gt;technic,&lt;BR&gt;&amp;gt;but=3D20<br>&gt; &gt;in SM some people are =
using the G2DAF design&lt;BR&gt;&amp;gt;in very high power <br>&gt; =
&gt;=3D<br>&gt; &gt;amps on=3D20<br>&gt; &gt;SSB.&lt;BR&gt;&amp;gt;I do =
not belive G2DAF intensions was the same.&lt;BR&gt;&amp;gt;As <br>&gt; =
&gt;you =3D<br>&gt; &gt;know,=3D20<br>&gt; &gt;on the AMP reflector some =
people&lt;BR&gt;&amp;gt;dump the G2DAF as a very <br>&gt; =
&gt;poor=3D20<br>&gt; &gt;design&lt;BR&gt;&amp;gt;while others says it's =
a great design.&lt;BR&gt;&amp;gt;For me the <br>&gt; &gt;=3D<br>&gt; =
&gt;thing is=3D20<br>&gt; &gt;to learn who is right&lt;BR&gt;&amp;gt;in =
this matter.&lt;BR&gt;&amp;gt;73's Hakan=3D20<br>&gt; =
&gt;SM3LBN&lt;BR&gt;&lt;BR&gt;&lt;BR&gt;Guess you have a problem there =
Hakan,&amp;nbsp; who to =3D<br>&gt; &gt;belive, me=3D20<br>&gt; &gt;or =
Rich and others.....Thats not easy...&lt;BR&gt;Maybe you should leave =
<br>&gt; &gt;that=3D20<br>&gt; &gt;triode-crap behind, wich are so =
hungry for drivepower that you need =3D<br>&gt; =
&gt;a&lt;BR&gt;SB220=3D20<br>&gt; &gt;or similar between exiter and =
amp.&lt;BR&gt;&lt;BR&gt;Guess the best way to learn <br>&gt; &gt;is =
=3D<br>&gt; &gt;to do!=3D20<br>&gt; &gt;Build one of your own, and join =
the proud crew...! ;)&lt;BR&gt;&lt;BR&gt;Go for <br>&gt; =
&gt;it=3D20<br>&gt; &gt;Hakan!&lt;BR&gt;&lt;BR&gt;73 de =
Lars/SM3BDZ&lt;BR&gt;&lt;/DIV&gt;&lt;/BODY&gt;&lt;/HTML&gt;<br>&gt; =
&gt;<br>&gt; &gt;------=3D_NextPart_000_0017_01BE04FA.BD838200--<br>&gt; =
&gt;<br>&gt; &gt;<br>&gt; &gt;--<br>&gt; &gt;FAQ on WWW: =
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