My Corsair II listens to CW on 20m on USB (Properly). I don't hear anything to complain about. Same filters as an OMNI VI. The tea pot is too small for there to be a tempest! 73, Jerry, K0CQ -- FAQ on WWW: http://www.contesting.com/FAQ/tentec Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com