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[AMPS] New 3cx800a7 and 4cx1600b Svetlanas

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Subject: [AMPS] New 3cx800a7 and 4cx1600b Svetlanas
From: (yo9fzs)
Date: Fri, 20 Jul 2001 11:53:02 +0300
Hello Remigijus,

These pairs of tubes are equivalents (IDENTICAL):

GU74 = 4CX800,
GS23 = 4CX1600U,
and also GU13 = 813
(but, as with the GU74, the GU13 is conservatively rated
in the russian catalogues for lower power)

The GS35, GU34, GU43, GU84, GU78, GS31 and many
other russian tubes have no direct western equivalents.
I mean that these tubes may have similar electrical parameters
as some western tubes, but have different look, size/dimensions,
base and sockets.

I saw both 4CX1600B and GU84 and can say that are (phisical)
different tubes. Also the GU84 have greater anode power.
The GU 43 and 4CX1000 are also different (both electrical
and as look and size also).
The GU91B is different fromm 4CX1600B, but I have no info
about the 4CX1600A.


Remigijus wrote:

> Hello ALL,
> As I know 4CX1600B is similar to GU84B Svetlana tube....
> But one my friend every time telling me that GU84B is 4CX2500....
> Anyone have an idea where to find "dictionary" for Svetlana
> tubes convertion from Russian to USA standart? Have saw
> one, but there is very few tubes we are talking about here.
> As I have found:
> GS36B - 4CX400A
> GS23B - 4CX1600U
> GI7b - AEG LDa
> GS35B - 8877/4cx1500A7 (but they looks very different!!!!!)
> GU13 - 813
> GU43B - 4CX1000
> GU91B - 4CX1600A
> GU74B - 4CX800A
> Can anyone confirm or correct this list?
> Any help and information will be greatly appreciated.
> Thanks in advance.
> Remi LY2MW
> At 21:58 2001.07.19 -0400, Frank & Barb Ayers wrote:
> >
> >Paul wrote -
> >>For what it's worth (no pun intended), the GS-23B (4CX1600) can be bought
> >>(tested and guaranteed) from "Max",, for $75 each
> >>just now (he apparently has two; not a common occurrence); the more common
> >>cost is $150 to $160 each delivered.
> >
> >
> >Seems to me a GS-23B is not the same as a 4CX1600B, but is rather a
> >4CX1600A.
> >The "A" has an anode cooler with the diameter of a 4CX800 while the "B" has
> >a cooler with a similar diamter to an 8877 or 3.34 inches.
> >
> >Frank
> >W2FCA
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