>How do problems with these tubes show up when you use them? > >Steve They will fail in a relatively short time. (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.contesting.com/km9p/search.htm