Have a 77DX that on transmit draws grid current, but no plate current. High voltage on plate checks out OK so transformer is not the problem. Any suggestions? Aloha, Al -- 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