[AMPS] Alpha 76 and 78 tube conversions
Will
k6ndv@contesting.com
Sat, 2 Feb 2002 19:23:51 -0800
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Now, enough again...!
NO MORE!
Will, K6NDV
AMPS reflector administrator
-----Original Message-----
From: owner-amps@contesting.com [mailto:owner-amps@contesting.com]On
Behalf Of Phil (VA3UX)
Sent: Saturday, February 02, 2002 6:24 PM
To: amps@contesting.com
Subject: Re: [AMPS] Alpha 76 and 78 tube conversions
At 11:53 AM 2/2/2002 -0600, you wrote:
Actually,
I have.
Then take the better deal and shut-up.
You related to WA4D ?
Phil
N5IFI
----- Original Message -----
From: Steven Moore
To: Jimmy Jones
Sent: Saturday, February 02, 2002 11:22 AM
Subject: Re: [AMPS] Alpha 76 and 78 tube conversions
N5IFI,
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?
Steve wd0ct
----- Original Message -----
From: Jimmy Jones
To: AMPS ; Tom Hix
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 -----
From: Tom Hix
To: amps
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.
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.
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.
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.
http://www.tomstubes.com
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<DIV><SPAN class=3D110342203-03022002><FONT face=3DArial color=3D#0000ff =
size=3D2>Now,=20
enough again...!</FONT></SPAN></DIV>
<DIV><SPAN class=3D110342203-03022002><FONT face=3DArial color=3D#0000ff =
size=3D2>NO=20
MORE!</FONT></SPAN></DIV>
<DIV><SPAN class=3D110342203-03022002><FONT face=3DArial color=3D#0000ff =
size=3D2>Will,=20
K6NDV</FONT></SPAN></DIV>
<DIV><SPAN class=3D110342203-03022002><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D110342203-03022002><FONT face=3DArial color=3D#0000ff =
size=3D2>AMPS=20
reflector administrator</FONT></SPAN></DIV>
<DIV><SPAN class=3D110342203-03022002><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<BLOCKQUOTE>
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> =
owner-amps@contesting.com=20
[mailto:owner-amps@contesting.com]<B>On Behalf Of </B>Phil=20
(VA3UX)<BR><B>Sent:</B> Saturday, February 02, 2002 6:24 =
PM<BR><B>To:</B>=20
amps@contesting.com<BR><B>Subject:</B> Re: [AMPS] Alpha 76 and 78 tube =
conversions<BR><BR></FONT></DIV>At 11:53 AM 2/2/2002 -0600, you =
wrote:<BR>
<BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite"><FONT face=3Darial=20
size=3D2>Actually,</FONT><BR><FONT face=3Darial size=3D2>I=20
have.</FONT></BLOCKQUOTE><BR>Then take the better deal and =
shut-up.<BR><BR>You=20
related to 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> <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> <BR><FONT face=3Darial =
size=3D2>Steve =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 =
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 & =
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
=
</BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE><BR></BLOCKQUOTE></BO=
DY></HTML>
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