I have the following that are not listed in my ancient Eimac books: 882931 008294 135305 SK1910 Any help identifying these and the respective tubes appreciated. Tnx....Carl KM1H -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Sponsored by: Akorn Access, Inc. & N4VJ / K4AAA