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The old 2K might be worth about $450-600
The 2K-2 about the same maybe a bit more since no meter changes $500-700.
You can replace the 3-400Z tubes with 3-500 tubes but the sockets will need
to be dropped to accommodate the increased height of the 3-500 tubes. Also a
"bias block" diode bias will work here too.
The 2K-3 was the first HENRY to use the "new" 3-500Z tubes from Eimac. Maybe
getting a manual from that amplifier would show what the progression was
from the earlier model. The 2K-3 also used solid state rectifiers.
I am currently researching a "history of HENRY" and will have a series of
WebPages on all the models from day one. This will help HENRY owners to
learn more about when their amp was built and the features unique to that
model.
I also just bought the very first HENRY amp ever made! a 2K serial number
"1". Soon I'll have that up on my site too.
Also note that later 3-400Z tubes were just as high as 3-500Z tubes as they
now sport a ring at the base making them the same height.
73, Dan Magro W7RF, (member SCDXC, SCCC)
Rugged, Reliable Henry HF Amps are "Instant on" for RF Power now!
DXers/Contesters/Ragchewers get your HENRY from RADIODAN for LESS!
***Subscribe to the HENRY reflector at www.qth.net ***
www.radiodan.com RFpower@radiodan.com
A trip to our web site is worth the click!
-----Original Message-----
From: owner-amps@contesting.com [mailto:owner-amps@contesting.com]On
Behalf Of Jim Heath
Sent: Saturday, November 21, 1998 8:17 PM
To: amps@contesting.com
Subject: [AMPS] Henry 2K and Henry 2K-2
What is an old Henry 2K from 1964 worth? The plate current meter has been
replaced with a Shurite (sure-wrong) meter. It is about a 7 out of 10. It
still has 3-400z's. The plate transformer is now a Peter Dahl. There are
no other mods. It even has the old 3B28's.
Also, what is a Henry 2k-2 from 1972 worth? It is about an 8 out of 10.
It too still has 3-400z's.
Any advice on converting either of these to 3-500z use is welcome.
Neither has bias. I just happen to have some 3-500z's and no 3-400z's.
Thanks!
Jim KB6SX
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<BODY bgColor=3D#ffffff>
<DIV><SPAN class=3D990113604-22111998><FONT color=3D#0000ff =
face=3D"Comic Sans MS"=20
size=3D2>The old 2K might be worth about $450-600</FONT></SPAN></DIV>
<DIV><SPAN class=3D990113604-22111998><FONT color=3D#0000ff =
face=3D"Comic Sans MS"=20
size=3D2>The 2K-2 about the same maybe a bit more since no meter changes =
$500-700.</FONT></SPAN></DIV>
<DIV> </DIV>
<DIV><SPAN class=3D990113604-22111998><FONT color=3D#0000ff =
face=3D"Comic Sans MS"=20
size=3D2>You can replace the 3-400Z tubes with 3-500 tubes but the =
sockets will=20
need to be dropped to accommodate the increased height of the 3-500 =
tubes. Also=20
a "bias block" diode bias will work here too. <BR>The 2K-3 was =
the=20
first HENRY to use the "new" 3-500Z tubes from Eimac. Maybe =
getting a=20
manual from that amplifier would show what the progression was from the =
earlier=20
model. The 2K-3 also used solid state rectifiers.</FONT></SPAN></DIV>
<DIV><SPAN class=3D990113604-22111998><FONT color=3D#0000ff =
face=3D"Comic Sans MS"=20
size=3D2>I am currently researching a "history of HENRY" and =
will have a=20
series of WebPages on all the models from day one. This will help HENRY =
owners=20
to learn more about when their amp was built and the features unique to =
that=20
model.</FONT></SPAN></DIV>
<DIV> </DIV>
<DIV><SPAN class=3D990113604-22111998><FONT color=3D#0000ff =
face=3D"Comic Sans MS"=20
size=3D2>I also just bought the very first HENRY amp ever made! a 2K =
serial number=20
"1". Soon I'll have that up on my site =
too.</FONT></SPAN></DIV>
<DIV> </DIV>
<DIV><SPAN class=3D990113604-22111998><FONT color=3D#0000ff =
face=3D"Comic Sans MS"=20
size=3D2>Also note that later 3-400Z tubes were just as high as =
3-500Z tubes=20
as they now sport a ring at the base making them the same=20
height.</FONT></SPAN></DIV>
<DIV> </DIV>
<P><FONT face=3D"Comic Sans MS"><FONT size=3D3>73, Dan Magro <FONT=20
face=3D"Comic Sans MS">W7RF, (member <FONT color=3D#000000 =
face=3D"">SCDXC,=20
SCCC</FONT>)<BR>Rugged, Reliable Henry HF Amps are "<FONT=20
color=3D#ff0000>Instant on</FONT>" for RF Power=20
now!<BR>DXers/Contesters/Ragchewers get your HENRY from RADIODAN for =
<FONT=20
color=3D#ff0000>LESS! <BR></FONT><FONT color=3D#ff0000>***Subscribe to =
the HENRY=20
reflector at <A href=3D"http://www.qth.net";>www.qth.net</A>=20
***</FONT><BR></FONT></FONT></FONT><FONT size=3D3><FONT face=3D"Comic =
Sans MS"><A=20
href=3D"http://www.radiodan.com"=20
target=3D_blank>www.radiodan.com</A> <A=20
href=3D"mailto:RFpower@radiodan.com";>RFpower@radiodan.com<BR></A></FONT><=
FONT=20
face=3D"Comic Sans MS">A trip to our web site is worth the=20
click!<BR></FONT></FONT></P>
<DIV> </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px">
<DIV class=3DOutlookMessageHeader><FONT face=3D"Times New Roman"=20
size=3D2>-----Original Message-----<BR><B>From:</B> <A=20
=
href=3D"mailto:owner-amps@contesting.com";>owner-amps@contesting.com</A> =
[<A=20
=
href=3D"mailto:owner-amps@contesting.com";>mailto:owner-amps@contesting.co=
m</A>]<B>On=20
Behalf Of</B> Jim Heath<BR><B>Sent:</B> Saturday, November 21, 1998 =
8:17=20
PM<BR><B>To:</B> <A=20
=
href=3D"mailto:amps@contesting.com";>amps@contesting.com</A><BR><B>Subject=
:</B>=20
[AMPS] Henry 2K and Henry 2K-2<BR><BR></FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>What is an old Henry 2K from 1964 =
worth? =20
The plate current meter has been replaced with a Shurite (sure-wrong) =
meter.=20
It is about a 7 out of 10. It still has 3-400z's. The =
plate=20
transformer is now a Peter Dahl. There are no other mods. =
It even=20
has the old 3B28's.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Also, what is a Henry 2k-2 from =
1972=20
worth? It is about an 8 out of 10. It too still has=20
3-400z's.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Any advice on converting either of =
these to=20
3-500z use is welcome. Neither has bias. I just happen to =
have=20
some 3-500z's and no 3-400z's.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Thanks!</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Jim KB6SX</FONT></DIV>
<DIV><FONT color=3D#000000 =
size=3D2></FONT> </DIV></BLOCKQUOTE></BODY></HTML>
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