Looks like the 374 was produced with three 8874s and two with the 374A. See
the following link for a complete listing of legacy
Alpha Amplifier specs...
http://www.alpha-amps.com/html/legacy.htm
For those intersted, detailed pictures of my vapor-cooled Alpha PA70-V are also
listed on this page. Click on the "70-V" model
number for the images.
73,
-Paul, W9AC
----- Original Message -----
From: "Tim Kass" <tkass@forpsych.org>
To: "'Steve Katz'" <stevek@jmr.com>; "'Terry Gaiser'" <w6ru@bak.rr.com>; "'Bill
Smith'" <ko4nrbs@yahoo.com>; <amps@contesting.com>
Sent: Friday, October 05, 2001 1:56 PM
Subject: RE: [AMPS] ALPHA 374A
>
> The 374 has 2 8874, as does the 274, but added 160 meters on it, where the
> 274 did not....the 374A came later... 73 Tim
>
>
>
>
>
> -----Original Message-----
> From: owner-amps@contesting.com [mailto:owner-amps@contesting.com]On
> Behalf Of Steve Katz
> Sent: Friday, October 05, 2001 12:44 PM
> To: 'Terry Gaiser'; 'Bill Smith'; amps@contesting.com
> Subject: RE: [AMPS] ALPHA 374A
>
>
>
> Not my 374A! Hmmmm...it's possible they changed something during the
> multi-year sales cycle of this product, but the "374" meant "3 x 8874" and
> used 3 tubes -- at least mine does. They also had a "274" which was "2 x
> 8874" and used two tubes. Mine exhausts out the rear, exclusively. There's
> no holes in the top, at all.
>
> WB2WIK/6
>
> "Each success only buys an admission ticket to a more difficult problem." --
> Henry Kissinger
>
> > -----Original Message-----
> > From: Terry Gaiser [SMTP:w6ru@bak.rr.com]
> > Sent: Friday, October 05, 2001 8:36 AM
> > To: Steve Katz; 'Bill Smith'; amps@contesting.com
> > Subject: Re: [AMPS] ALPHA 374A
> >
> > I think you are mistaken ... the 374A does exhaust out the top ... has 2
> > tubes ... no bandpass mode on 10 meters.
> > Terry W6RU
> >
> > ----- Original Message -----
> > From: Steve Katz <stevek@jmr.com>
> > To: 'Bill Smith' <ko4nrbs@yahoo.com>; <amps@contesting.com>
> > Sent: Friday, October 05, 2001 7:22 AM
> > Subject: RE: [AMPS] ALPHA 374A
> >
> >
> > >
> > > I purchased a 374A in "mint" condition a few years ago for $1295, and
> > felt
> > > that was a reasonably good deal. Obviously, the cost of three new
> > > replacement tubes is about that! For one with very few hours on the
> > tubes
> > > and in factory-fresh condition, I'd have likely paid a bit more.
> > >
> > > When you say "full output," is that in the bandpass (no-tune) mode? If
> > so,
> > > and you get full output on 10m in the bandpass mode, that's wonderful,
> > and
> > > unusual for such an oldie, probably means the owner never messed with
> > it!
> > >
> > > Only caveat I can think of is that the 374A needs to be installed where
> > > there's a lot of breathing room behind it. It does not vent or exhaust
> > out
> > > the top, but out the rear, and the output duct is very small (as you've
> > > likely noticed) and blows a steady stream of very hot air under key-down
> > > condx. That air needs to blow, unrestricted, for quite a distance. I
> > > wouldn't place anything behind the amp for about 12" or so. Other than
> > > that, it's a rather amazing amp that has proven itself a workhorse in
> > > hundreds of contest stations around the world...
> > >
> > > WB2WIK/6
> > >
> > > "Each success only buys an admission ticket to a more difficult
> > problem." --
> > > Henry Kissinger
> > >
> > > > -----Original Message-----
> > > > From: Bill Smith [SMTP:ko4nrbs@yahoo.com]
> > > > Sent: Thursday, October 04, 2001 7:08 PM
> > > > To: amps@contesting.com
> > > > Subject: [AMPS] ALPHA 374A
> > > >
> > > >
> > > > I've found a Alpha 374A amplifier that has not been
> > > > used for several years. The guy says he'll sell it
> > > > but does not know what it may be worth. It is in very
> > > > clean condition and when checked out today had full
> > > > output. It is in orginial condition with no mods.
> > > > It's pretty obvious this amp has not been used much!!
> > > > There isn't a scratch on it anywhere.
> > > >
> > > > What is a fair market price for this amp? Does the
> > > > Alpha 374A have a good reputation?
> > > > 73,
> > > > Bill Smith KO4NR
> > > >
> > > > =====
> > > > Bill Smith KO4NR
> > > >
> > > > --
> > > > FAQ on WWW: http://www.contesting.com/FAQ/amps
> > > > Submissions: amps@contesting.com
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> > > > Problems: owner-amps@contesting.com
> > >
> > > --
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> > > Problems: owner-amps@contesting.com
> > >
> > >
>
> --
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> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
>
>
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> Submissions: amps@contesting.com
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> Problems: owner-amps@contesting.com
>
--
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