Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com> By Coincidence (sort of...): I have a July 1937 Pop Mechanics (?) with a set of Oudin coil plans. Scans available, if they have not yet been collected.. (Interesting set of safety cautions to start the article...) best dwp