DescriptionTWTA.png English: Illustration of a Travelling wave tube amplifier created by Wapcaplet using Blender and the GIMP. Electron gun RF input Magnets
Caretto.PNG English: Coat arms marques del caretto Italiano: Stemma dei marchesi del Caretto Date 1600 Source http://4.bp.blogspot.com/-rIa_gvmtAqA/TWta