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[AMPS] Alpha 76 and 78 tube conversions

To: <amps@contesting.com>
Subject: [AMPS] Alpha 76 and 78 tube conversions
From: jjones@etex.net (Jimmy Jones)
Date: Sat, 2 Feb 2002 11:53:56 -0600
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Actually,
I have.

N5IFI
  ----- Original Message -----=20
  From: Steven Moore=20
  To: Jimmy Jones=20
  Sent: Saturday, February 02, 2002 11:22 AM
  Subject: Re: [AMPS] Alpha 76 and 78 tube conversions


  N5IFI,
  =20
  Let's see here--new tubes and sockets at cost and if they don't fit =
you can send them back. What's wrong with that? You had any better =
offers lately?
  =20
  Steve  wd0ct
    ----- Original Message -----=20
    From: Jimmy Jones=20
    To: AMPS ; Tom Hix=20
    Sent: Saturday, February 02, 2002 9:14 AM
    Subject: Re: [AMPS] Alpha 76 and 78 tube conversions


    What a deal. You are just like everyone else in the world. You can't =
do it, but it can't be that hard and hell IT'S NOT WORTH ANYTHING.
    You should supply the tubes and sockets at no cost for that deal.
    N5IFI
      ----- Original Message -----=20
      From: Tom Hix=20
      To: amps=20
      Sent: Saturday, February 02, 2002 2:05 AM
      Subject: [AMPS] Alpha 76 and 78 tube conversions


      I dont know if any of you builders have ever paid any attention to =
the Svetlana gi7b/gi7bt triodes, but if you haven't you should. These =
are really neat tubes, and I can supply them at a great price.=20

      I believe these tubes would possibly be a good solution for many =
of the people who own the older Alpha amps like the 76 and 78 series, =
who dont want to pay $1200.00 to $1500.00 to retube their amps. These =
tubes are really heavy duty. A pair of them will give you about 1200 to =
1400 watts depending on voltage and drive. There is an article on my =
site about the conversion a friend of mine did on an older Dentron amp =
that ran 4 572b tubes. He put in a pair of the gi7b tubes and was able =
to make a real nice amp out of it. He gets about 1200 to 1300 watts out =
on the pair of gi7b tubes.=20

      Since the 8874 tubes for the 76 and 78 series Alpha amps have gone =
up so high, I am constantly getting calls from people wanting to know if =
there is a substitute they can get for the 8874 tubes. Of course there =
are no direct replacements, but these gi7b tubes might just be a good =
choice as replacements for the 8874 tubes.

      I really hate to see anyone have to rework a perfectly good amp =
like the alpha 76 or 78, but the price on the 8874 tubes have gone up so =
much that you can actually buy a good amp for what it would cost to =
retube these amps. I get calls every week from Alpha 76 and 78 owners =
facing this very situation. Most of them tell me they will just have to =
stop using their amps because they are not willing to spend the money to =
retube their amps. They will either have to set them aside or find =
another tube they can replace the 8874 with. So it is a real dilemma for =
these owners to decide what to do. Turn the amps out to pasture or =
replace the tubes with something they can afford.=20

      I am not an amp builder. I wish I knew a lot more about    =
building amps or reworking existing amps, but I am to old, fat, dumb and =
lazy to learn know. BUT.....I know many of you folks on this list are =
the very best at building and repairing amps.

      SO..............Here is what I am thinking of doing. Just to see =
if the gi7b tubes can be a decent replacement for the 8874 tubes. If =
someone who knows what they are doing has an amp that has the 8874's in =
it, and they want to change those out and would like to try the gi7b =
tubes, I will sell you, for my cost, a pair of these gi7b tubes, and a =
matching set of sockets.

      The person who wants to do this can take a look at what I send =
them and determine if the tubes and sockets will physically fit into the =
cabinet. If they will then he can pay me for the tubes and sockets at my =
cost......all I ask is that when the conversion is completed that the =
person who does the work, will send me a schematic of the conversion and =
a full set of pictures detailing each step of the conversion. I want =
this so I can share it on my web site with all the other amateurs who =
want to change out their 8874 tubes to something else like the gi7b. So =
if you know what you are doing, and have a good digital camera and can =
send me the pictures of the project via email, then contact me. I would =
love to see if this could be done, and I know the entire group of older =
Alpha owners would really appreciate finding out if there is another =
tube they can use, and what it will take to make it happen.

      If any of you are interested in trying this, just send me a reply =
and we will see what we can work out. I have no idea if any of this is =
even feasible or not, but I sure do wish I could help out these guys =
with these beautiful old amps.

      Thanks for your time and comments will be welcome.

      73

      Tom Hix..................w4th




      Tom's Tubes: Your Russian Tube Connection. Specializing in Amateur =
Amplifier Tubes, Heavy Duty Antenna Tuners, Remote or local ladderline & =
coax antenna switches.=20

      http://www.tomstubes.com



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<META content=3D"text/html; charset=3Diso-8859-1" =
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Actually,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I have.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>N5IFI</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A href=3D"mailto:wd0ct@networksplus.net"; =
title=3Dwd0ct@networksplus.net>Steven=20
  Moore</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A href=3D"mailto:jjones"=20
  title=3Djjones>Jimmy Jones</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, February 02, =
2002 11:22=20
  AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [AMPS] Alpha 76 =
and 78 tube=20
  conversions</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=3DArial size=3D2>N5IFI,</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Let's see here--new tubes and sockets =
at cost and=20
  if they don't fit you can send them back.&nbsp;What's wrong with that? =
You had=20
  any better offers lately?</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Steve&nbsp; wd0ct</FONT></DIV>
  <BLOCKQUOTE dir=3Dltr=20
  style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; =
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
    <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
    <DIV=20
    style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
    <A href=3D"mailto:jjones@etex.net"; title=3Djjones@etex.net>Jimmy =
Jones</A>=20
</DIV>
    <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
    href=3D"mailto:amps@contesting.com"; =
title=3Damps@contesting.com>AMPS</A> ; <A=20
    href=3D"mailto:w4th@hotmail.com"; title=3Dw4th@hotmail.com>Tom =
Hix</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, February 02, =
2002 9:14=20
    AM</DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [AMPS] Alpha 76 =
and 78=20
    tube conversions</DIV>
    <DIV><BR></DIV>
    <DIV><FONT face=3DArial size=3D2>What a deal.&nbsp;You are just like =
everyone=20
    else in the world. You can't do it, but it can't be that hard and =
hell IT'S=20
    NOT WORTH ANYTHING.</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2>You should supply the tubes and =
sockets&nbsp;at=20
    no cost for that deal.</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2>N5IFI</FONT></DIV>
    <BLOCKQUOTE=20
    style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; =
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
      <DIV style=3D"FONT: 10pt arial">----- Original Message ----- =
</DIV>
      <DIV=20
      style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
      <A href=3D"mailto:w4th@hotmail.com"; title=3Dw4th@hotmail.com>Tom =
Hix</A>=20
</DIV>
      <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A href=3D"mailto:amps"; =

      title=3Damps>amps</A> </DIV>
      <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, February =
02, 2002=20
      2:05 AM</DIV>
      <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [AMPS] Alpha 76 =
and 78 tube=20
      conversions</DIV>
      <DIV><BR></DIV>
      <DIV>
      <DIV>
      <DIV>
      <DIV></DIV>
      <DIV></DIV>
      <P>I dont know if any of you builders have ever paid any attention =
to the=20
      Svetlana gi7b/gi7bt triodes, but if you haven't you should. These =
are=20
      really neat tubes, and I can supply them at a great price. </P>
      <P>I believe these tubes would possibly be a good solution for =
many of the=20
      people who own the older Alpha amps like the 76 and 78 series, who =
dont=20
      want to pay $1200.00 to $1500.00 to retube their amps. These tubes =
are=20
      really heavy duty. A pair of them will give you about 1200 to 1400 =
watts=20
      depending on voltage and drive. There is an article on my site =
about the=20
      conversion a friend of mine did on an older Dentron amp that ran 4 =
572b=20
      tubes. He put in a pair of the gi7b tubes and was able to make a =
real nice=20
      amp out of it. He gets about 1200 to 1300 watts out on the pair of =
gi7b=20
      tubes. </P>
      <P>Since the 8874 tubes for the 76 and 78 series Alpha amps have =
gone up=20
      so high, I am constantly getting calls from people wanting to know =
if=20
      there is a substitute they can get for the 8874 tubes. Of course =
there are=20
      no direct replacements, but these gi7b tubes might just be a good =
choice=20
      as replacements for the 8874 tubes.</P>
      <P>I really hate to see anyone have to rework a perfectly good=20
      amp&nbsp;like the alpha 76 or 78, but the price&nbsp;on the 8874 =
tubes=20
      have&nbsp;gone up so much that you can actually buy a good amp for =
what it=20
      would cost to retube these amps. I get calls every week =
from&nbsp;Alpha 76=20
      and 78 owners facing this very situation. Most of them tell me =
they will=20
      just have to stop using their amps because&nbsp;they are not =
willing to=20
      spend the money to retube their amps. They will either&nbsp;have =
to set=20
      them aside or find another tube they can replace the 8874 with. So =
it is a=20
      real dilemma for these owners to decide what to do. Turn the amps =
out to=20
      pasture or replace the tubes with something they can =
afford.&nbsp;</P>
      <P>I am not an amp builder. I wish I knew a lot more=20
      about&nbsp;&nbsp;&nbsp; building&nbsp;amps&nbsp;or reworking =
existing=20
      amps, but I am to old, fat, dumb and lazy to learn know. BUT.....I =
know=20
      many of you folks on this list are the very best at building and =
repairing=20
      amps.</P>
      <P>SO..............Here is what I am thinking of doing. Just to =
see if the=20
      gi7b tubes can be a decent replacement for the 8874 tubes. If =
someone who=20
      knows what they are doing has an amp that has the 8874's in it, =
and they=20
      want to change those out and would like to try the gi7b tubes, I =
will sell=20
      you,&nbsp;for my cost, a pair of these gi7b tubes, and a matching =
set of=20
      sockets.</P>
      <P>The person who wants to do this can take a look at what I send=20
      them&nbsp;and determine if the tubes and sockets&nbsp;will =
physically fit=20
      into the cabinet. If they will then he can pay me for the tubes =
and=20
      sockets at my cost......all I ask is that when the conversion is =
completed=20
      that the person who does the work, will send me a schematic of the =

      conversion and a full set of pictures detailing each step of the=20
      conversion. I want this so I can share it on my web site =
with&nbsp;all the=20
      other amateurs who want to change out their 8874 tubes to =
something else=20
      like the gi7b. So if you know what you are doing, and have a good =
digital=20
      camera and can send me the pictures of the project via email, then =
contact=20
      me. I would love to see if this could be done, and I know the =
entire group=20
      of older Alpha owners would really appreciate finding out if there =
is=20
      another tube they can use, and what it will take to make it =
happen.</P>
      <P>If any of you are interested in trying this, just send me a =
reply and=20
      we will see what we can work out. I have no idea if any of this is =
even=20
      feasible or not, but I sure do wish I could help out these guys =
with these=20
      beautiful old amps.</P>
      <P>Thanks for your time and comments will be welcome.</P>
      <P>73</P>
      <P>Tom Hix..................w4th<BR><BR><BR></P>
      <DIV></DIV>
      <DIV></DIV>
      <DIV></DIV>
      <P><FONT color=3D#ff0066>Tom's Tubes: Your Russian Tube =
Connection.=20
      Specializing in Amateur Amplifier Tubes, Heavy Duty Antenna =
Tuners, Remote=20
      or local ladderline &amp; coax antenna switches. </FONT></P>
      <DIV></DIV>
      <P><A =
href=3D"http://www.tomstubes.com/";>http://www.tomstubes.com</A></P>
      <DIV></DIV>
      <DIV></DIV>
      <DIV></DIV>
      <DIV></DIV></DIV></DIV></DIV><BR clear=3Dall>
      <HR>
      MSN Photos is the easiest way to share and print your photos: <A=20
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Here</A><BR>-- FAQ on=20
      WWW: http://www.contesting.com/FAQ/amps Submissions: =
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