[rescue] I want a vacuum tube

Jochen Kunz jkunz at unixag-kl.fh-kl.de
Thu Oct 30 13:58:26 CDT 2008

On Thu, 30 Oct 2008 10:04:32 -0400
Sridhar Ayengar <ploopster at gmail.com> wrote:

> Good Lord.  Those look like water heaters.
They _are_ water heaters. The metal thing on the top half of the tube
is filled with water. The water boils, vaporizes and thus cools the
tube. This is very effective. The tube converts a maximum of about
430 kW of electrical power into heat. (400 kW anode, 15 kW kathode
heating and an other 15 kW on the grids.)

BTW: I got the wrong URL, this is the full picture:

This is the "smaler" 200 kW preamplifier tube:
You can see the glas pipe on top of the tube to drain the steam and the
copper pipe in the front to constantly replenish vaporized water.

Really an electronic steam machine. ;-)

This is a smaler 120 kW transmitter at the same location:
Here you can see the HF tubes of this transmitter in operation, glowing
kathodes and again glas piping to supply colling water and drain steam:


Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/

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