Marco, How does the noise suppression insulation work for the spark gap? I assume you have air flowing through it? Great job. Thanks for the pics. Bart Tesla List wrote: > Original Poster: "Marco Denicolai"<Marco.Denicolai-at-tellabs.fi> > > Now I have got also pictures of my rotating spark gap. Find them at: > > http://www.saunalahti.fi/dncmrc/rsg.html