(So I'm back on XP for now) I see the tab on the XVTR for HPSDR open collectors I figured out that J6 is on Penelope. What is the reason for both Recv pins and Transmit pins? There is only one set of outputs that I can find (on Penelope) so what is the Recv side designed to do? thanks, I'm getting up to speed. Phil K3TUF