Rf Technologies Corporation - Engineers, designers and manufacturers of high power RF, microwave and broadcast RF systems. - http://www.rftechnologies.net/
LBA Technologies - Super power, medium wave RF antenna components, super high power coils and forms. - http://www.lbagroup.com/technology/super.htm
Electronics Manufacturing, Inc. - Manufacturer of high voltage rectifiers, stacks, diodes, multipliers, assemblies, and bridges. - http://www.rectifiers.com/