Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Xyme3-at-aol-dot-com> In a message dated 5/14/2002 1:16:09 PM, tesla-at-pupman-dot-com writes: << Vacuum Tube Tesla Coil. CW (Continuous wave) as opposed to impulse. best dwp >> I have never heard of a vacuum tube Tesla coil. Are you perhaps referring to Wardencliff where the plan was to create an open ended vacuum?