Just got an e-mail the Chairman of Covimag in France. Indeed they are the manufacturer of all Amperex brand vacuum tube products. It took a bit of tracking down but finally found it. http://www.covimag.fr/ 73 Bill wa4lav -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com