4CX2500 Soviet Tetrode Tube
 

Hello All:

Here is a neat tube made the Soviets at Svetlana. Heard a lot about
these tubes. Anyone using anything like this?

http://cgi.ebay.com/GU-84B-4CX2500A-...cmd ZViewItem

Tube spec's at: http://www.qro-stuff.com/gu-84b.pdf

The neat thing about Tetrode Tubes, is that it can be designed to have a
low input drive requirement for full output. With a step up transformer
and a resistive load on the input circuit of this Tetrode Tube. The
Pride DX-300 uses such a circuit with a 4CX250. So no driver is required
as the Triode Tubes in a Grounded Grid design.

Anyone using one of these tubes?

Jay in the Mojave

4CX2500 Soviet Tetrode Tube
 

Aren't those the same tubes that are used in the Russian
"woodpecker"?... LOL

Professor
www.telstar-electronics.com

4CX2500 Soviet Tetrode Tube
 

Hello professor:

Yeah the ol Russian Over the Horizon Radar, the "woodpecker"

http://www.qsl.net/n1irz/woodpeck.html

http://groups.google.com/group/rec.r...dc99bb61845566

http://dspace.dial.pipex.com/brogers/wpecker.htm

I wounder if those radars really worked. I am keeping an eye on E-Bay
for a surplus russian woodpecker transmitter.

Jay in the Mojave

Professor wrote:

Aren't those the same tubes that are used in the Russian
"woodpecker"?... LOL

Professor
www.telstar-electronics.com