[Amps] Tentec Titan 425 with GU74-B????

[James Colville]

4CX800 was a dream of George Badger and Bob Alprin. I summise that they were
trying to get the Svetlana tubes onto the market and use a number that was
more recciginazable thatn Gu74b.

It never did take off.

As said before, 4CX800 was never made by Eimac. I'm suprised they let the
Svetlana folks get away with it..  But they were ex Eimac employees.


73
Jim W7RY


On Mon, Feb 15, 2010 at 11:30 AM, DF3KV <df3kv at t-online.de> wrote:

> Hi Roger,
>
> Eimac 4CX800 never existed.
> American amps and other were built for some time by using NOS Russian
> GU74b,
> probably dropped from a military storage shelf
>
> 73
> Peter
>
> -----Original Message-----
> From: Roger [mailto:sub1 at rogerhalstead.com]
> Sent: Montag, 15. Februar 2010 20:00
> To: Carl
> Cc: DF3KV; amps at contesting.com
> Subject: Re: [Amps] Tentec Titan 425 with GU74-B????
>
>
>
> Carl wrote:
> > Its a rebranded 600W GU-74B with a magical free 200W of extra Pd to con
> the
> > ham market.
> >
> >
> So the Eimac the American amps using 4CX-800s are really using GU-74B's?
>
> 73
>
> Roger (K8RI)
> > Its also a pretty non linear tube unless the ZSAC is cranked up close to
> > Class A. Great shack heater.
> >
> > Carl
> > KM1H
> >
> >
> > ----- Original Message -----
> > From: "DF3KV" <df3kv at t-online.de>
> > To: <amps at contesting.com>
> > Sent: Monday, February 15, 2010 7:42 AM
> > Subject: Re: [Amps] Tentec Titan 425 with GU74-B????
> >
> >
> >
> >> What is a 4CX800?
> >> Was never made...
> >>
> >> But it is true, tetrodes can not replace triodes without a major
> redesign
> >>
> >> 73
> >> Peter
> >>
> >> -----Original Message-----
> >> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]
> On
> >> Behalf Of Roger
> >> Sent: Sonntag, 14. Februar 2010 00:03
> >> To: Greg Chartrand
> >> Cc: amps at contesting.com
> >> Subject: Re: [Amps] Tentec Titan 425 with GU74-B????
> >>
> >>
> >>
> >> Greg Chartrand wrote:
> >>
> >>> I'm looking at buying a pair of GU74-B's to have on hand as spares for
> my
> >>>
> >> Titan 425. Has anyone out there replaced the 3cx800A7's with GU74-B's??
> >>
> >>> Greg
> >>>
> >>>
> >> The GU-74B's are supposedly the same as the 4CX-800, not the 3CX-800A7
> >>
> >> 73
> >>
> >> Roger (K8RI)
> >>
> >> 73
> >>
> >> Roger (K8RI
> >>
> >>> ---------------------------------------------------------
> >>>
> >>> Greg Chartrand - W7MY
> >>>
> >>> Richland, WA.
> >>>
> >>> DN-06IF
> >>>
> >>>
> >>>
> >>> W7MY Home Page:
> >>>
> >>> http://webpages.charter.net/w7my/
> >>>
> >>>
> >>>
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