http://www.jets.dk/cs/forums/27/ShowForum.aspxLooking for Avionics ?en-USCommunityServer 2.0 (Build: 60526.2668)http://www.jets.dk/cs/forums/thread/5165.aspxSun, 03 Feb 2008 19:31:29 GMTa23efcf1-9e75-4ff9-be18-cd9cb68b9485:5165bcbk0http://www.jets.dk/cs/forums/thread/5165.aspxhttp://www.jets.dk/cs/forums/commentrss.aspx?SectionID=27&PostID=5165I have a Narco AT 150 transponder and a King KN 64 DME, which often reply to each other's signals.  A suppression wire was installed between the two radios to eliminate this problem.  The problem that I have is that although the units no longer reply to each other's signals, my Mode C cuts out, according to Air Traffic Control.  Is this a King issue, Narco issue, or is it an encoder issue.  I know that the Narco transponder has a positive suppression pinout and a negative suppression pinout but I'm not sure how this affects suppression. Any ideas?