For lots of tube data go to: www.mif.pg.gda.pl/homepages/frank/ QBL5/3500 and lotīs of other stuff 73 Jim SM2EKM -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.contesting.com/km9p/search.htm