This Old Tube
This tube started out as a defective EIMAC 3-400Z transmitting tube, that I took and cut a hole in the bottom of. I then inserted a small 12 volt light bulb in the bottom of the tube. to make the tube appear as though it is operating as original.
It goes without saying, that I had to come up with a display for the tube, and this is what I came up with. The power source is a small 12 volt rechargeable gel-cell, located in the wooden box that the tube is mounted on.
It sure is pretty, don't you think!
How did I do it? click on this link.