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

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

Professor
www.telstar-electronics.com

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