Building with Eimac tubes - 35T

Eimac tubes make great amplifiers as they can produce a lot of power from a relatively small size, employ the hight of 1940's military technology and are relatively affordable.

The downside is that they require very high voltage, most need A2 drive and they are very mildly radioactive.  ☢  👀

 The power requirements can be extensive.

Buttoned up, what is not shown is the 20 pound power transformer sitting below.
(Yes that is Elvis and hard to see but a St. Christopher medal)

They also make great nightlights and space heaters