On Mon 11 Feb 2008 at 21:36:02 EST Jim Miller (AB3CV) wrote ... Is there something that normally plugs into J5? Or is it still a "future use" header? Jim, Nothing plugs into J5 yet. 73, Gary KI4GGX P.S. Also check out the link entitled "Add Fixed Audio Out to the K2" at http://w3fpr.qrpradio.com/index.htm (it's at the bottom of the list).