A Dutch colleague sent me the following links, which discuss DIY projects. I like MW-MAX tuner and quite a few other projects in the first link. The second link is about a 7 year project to make a digital clock using valves.:yikes:
http://www.jogis-roehrenbude.de/Leserbriefe.htm
http://www.engadget.com/2006/06/26/all-tube-digital-clock-seven-years-in-the-making/
http://www.jogis-roehrenbude.de/Leserbriefe.htm
http://www.engadget.com/2006/06/26/all-tube-digital-clock-seven-years-in-the-making/