Another hand-made vacuum tube!

Another hand-made vacuum tube video! This time it is a French amateur radio operator by the name of Claude Paillard creating a more familiar type of triode tube with a custom four pin base.

The video runs for approximately 17 minutes and is accompanied by an instrumental version of "The Man I Love" written by George Gershwin.

Making a Spherical Audion Tube by Ron Soyland

Another great series of videos from Ron Soyland. In this video he recreates the classic Audion tube invented by Lee De Forest in 1906. The particular tube he creates in this video appears to be similar to the 1909 version of the Audion but substantially better made. The original Audion tubes were usually crudely constructed without the benefit of modern tooling or our current understanding of thermionic emission, they were expensive and had a short lifetime but paved the way for better tubes in the following years.

Making a Fleming Diode Tube - Ron Soyland

Its not often we get to see someone create a vacuum tube in their home workshop. Ron Soyland, a member of the Houston Vintage Radio Association, created these YouTube videos to show the process behind reproducing a Fleming diode tube. He carries out every task himself, from creating the glass envelope to final evacuation and testing.
Each video is approximately 10-15 minutes long and there are seven parts. Grab yourself a beverage and sit back to watch this fascinating process from raw glass to electronic component.