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[AMPS] Alpha 76 and 78 tube conversions

To: <amps@contesting.com>
Subject: [AMPS] Alpha 76 and 78 tube conversions
From: NICK.WALLACE@xtra.co.nz (Nick Wallace)
Date: Sun, 3 Feb 2002 19:20:49 +1300
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  Hey whatever happened to WA4DOG?Used to enjoy his ravings on 80m.

  Nick  ZL1IU

  You related to WA4D ?

  Phil




    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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          -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: =
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  <DIV style=3D"FONT: 10pt arial">&nbsp;</DIV>
  <DIV><FONT face=3Darial size=3D2>Hey whatever happened to WA4DOG?Used =
to enjoy his=20
  ravings on 80m.</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Nick&nbsp; ZL1IU</FONT></DIV><BR>You =
related to=20
  WA4D ?<BR><BR>Phil<BR><BR><BR>
  <BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite"><BR><FONT =
face=3Darial=20
    size=3D2>N5IFI</FONT><BR>
    <BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite">----- Original =
Message -----=20
      <BR><B>From:</B> <A href=3D"mailto:wd0ct@networksplus.net";>Steven =
Moore</A>=20
      <BR><B>To:</B> <A href=3D"mailto:jjones";>Jimmy Jones</A> =
<BR><B>Sent:</B>=20
      Saturday, February 02, 2002 11:22 AM<BR><B>Subject:</B> Re: [AMPS] =
Alpha=20
      76 and 78 tube conversions<BR><BR><FONT face=3Darial=20
      size=3D2>N5IFI,</FONT><BR>&nbsp;<BR><FONT face=3Darial =
size=3D2>Let's see=20
      here--new tubes and sockets at cost and if they don't fit you can =
send=20
      them back. What's wrong with that? You had any better offers=20
      lately?</FONT><BR>&nbsp;<BR><FONT face=3Darial =
size=3D2>Steve&nbsp;=20
      wd0ct</FONT><BR>
      <BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite">----- Original =
Message -----=20
        <BR><B>From:</B> <A href=3D"mailto:jjones@etex.net";>Jimmy =
Jones</A>=20
        <BR><B>To:</B> <A href=3D"mailto:amps@contesting.com";>AMPS</A> ; =
<A=20
        href=3D"mailto:w4th@hotmail.com";>Tom Hix</A> <BR><B>Sent:</B> =
Saturday,=20
        February 02, 2002 9:14 AM<BR><B>Subject:</B> Re: [AMPS] Alpha 76 =
and 78=20
        tube conversions<BR><BR><FONT face=3Darial size=3D2>What a deal. =
You are=20
        just like everyone else in the world. You can't do it, but it =
can't be=20
        that hard and hell IT'S NOT WORTH ANYTHING.</FONT><BR><FONT =
face=3Darial=20
        size=3D2>You should supply the tubes and sockets at no cost for =
that=20
        deal.</FONT><BR><FONT face=3Darial size=3D2>N5IFI</FONT><BR>
        <BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite">----- Original =
Message=20
          ----- <BR><B>From:</B> <A href=3D"mailto:w4th@hotmail.com";>Tom =
Hix</A>=20
          <BR><B>To:</B> <A href=3D"mailto:amps";>amps</A> =
<BR><B>Sent:</B>=20
          Saturday, February 02, 2002 2:05 AM<BR><B>Subject:</B> [AMPS] =
Alpha 76=20
          and 78 tube conversions<BR><BR>I dont know if any of you =
builders have=20
          ever paid any attention to the Svetlana gi7b/gi7bt triodes, =
but if you=20
          haven't you should. These are really neat tubes, and I can =
supply them=20
          at a great price. <BR><BR>I believe these tubes would possibly =
be a=20
          good solution for many of the people who own the older Alpha =
amps like=20
          the 76 and 78 series, who dont want to pay $1200.00 to =
$1500.00 to=20
          retube their amps. These tubes are really heavy duty. A pair =
of them=20
          will give you about 1200 to 1400 watts depending on voltage =
and drive.=20
          There is an article on my site about the conversion a friend =
of mine=20
          did on an older Dentron amp that ran 4 572b tubes. He put in a =
pair of=20
          the gi7b tubes and was able to make a real nice amp out of it. =
He gets=20
          about 1200 to 1300 watts out on the pair of gi7b tubes. =
<BR><BR>Since=20
          the 8874 tubes for the 76 and 78 series Alpha amps have gone =
up so=20
          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=20
          are no direct replacements, but these gi7b tubes might just be =
a good=20
          choice as replacements for the 8874 tubes.<BR><BR>I really =
hate to see=20
          anyone have to rework a perfectly good amp like the alpha 76 =
or 78,=20
          but the price on the 8874 tubes have gone up so much that you =
can=20
          actually buy a good amp for what it would cost to retube these =
amps. I=20
          get calls every week from Alpha 76 and 78 owners facing this =
very=20
          situation. Most of them tell me they will just have to stop =
using=20
          their amps because they are not willing to spend the money to =
retube=20
          their amps. They will either have to set them aside or find =
another=20
          tube they can replace the 8874 with. So it is a real dilemma =
for these=20
          owners to decide what to do. Turn the amps out to pasture or =
replace=20
          the tubes with something they can afford. <BR><BR>I am not an =
amp=20
          builder. I wish I knew a lot more about&nbsp;&nbsp;&nbsp; =
building=20
          amps or reworking existing amps, but I am to old, fat, dumb =
and lazy=20
          to learn know. BUT.....I know many of you folks on this list =
are the=20
          very best at building and repairing =
amps.<BR><BR>SO..............Here=20
          is what I am thinking of doing. Just to see if the gi7b tubes =
can be a=20
          decent replacement for the 8874 tubes. If someone who knows =
what they=20
          are doing has an amp that has the 8874's in it, and they want =
to=20
          change those out and would like to try the gi7b tubes, I will =
sell=20
          you, for my cost, a pair of these gi7b tubes, and a matching =
set of=20
          sockets.<BR><BR>The person who wants to do this can take a =
look at=20
          what I send them and determine if the tubes and sockets will=20
          physically fit into the cabinet. If they will then he can pay =
me for=20
          the tubes and sockets at my cost......all I ask is that when =
the=20
          conversion is completed that the person who does the work, =
will send=20
          me a schematic of the conversion and a full set of pictures =
detailing=20
          each step of the conversion. I want this so I can share it on =
my web=20
          site with all the other amateurs who want to change out their =
8874=20
          tubes to something else like the gi7b. So if you know what you =
are=20
          doing, and have a good digital camera and can send me the =
pictures of=20
          the project via email, then contact me. I would love to see if =
this=20
          could be done, and I know the entire group of older Alpha =
owners would=20
          really appreciate finding out if there is another tube they =
can use,=20
          and what it will take to make it happen.<BR><BR>If any of you =
are=20
          interested in trying this, just send me a reply and we will =
see what=20
          we can work out. I have no idea if any of this is even =
feasible or=20
          not, but I sure do wish I could help out these guys with these =

          beautiful old amps.<BR><BR>Thanks for your time and comments =
will be=20
          welcome.<BR><BR>73<BR><BR>Tom=20
          Hix..................w4th<BR><BR><BR><FONT =
color=3D#ff0066>Tom's Tubes:=20
          Your Russian Tube Connection. Specializing in Amateur =
Amplifier Tubes,=20
          Heavy Duty Antenna Tuners, Remote or local ladderline &amp; =
coax=20
          antenna switches. <BR></FONT><BR><A=20
          =
href=3D"http://www.tomstubes.com/";>http://www.tomstubes.com</A><BR><BR>
          <HR>
          MSN Photos is the easiest way to share and print your photos: =
<A=20
          href=3D"http://go.msn.com/bql/hmtag3_etl_EN.asp";>Click =
Here</A><BR>--=20
          FAQ on WWW: <A href=3D"http://www.contesting.com/FAQ/amps"=20
          eudora=3D"autourl">http://www.contesting.com/FAQ/amps</A> =
Submissions:=20
          amps@contesting.com Administrative requests:=20
          amps-REQUEST@contesting.com Problems: =
owner-amps@contesting.com=20
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</BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE><BR></BLOCKQUOTE></BO=
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