Good Evening: Can anyone please help with a question? How do I hook up the MFJ-2 CW filtre (the one with three filtres, etc.) to the ARGO 515? Somewhere someone said there is a way to do it, but I am stumped. Help, anyone? Thanks in advance. 73, --Doc/K0EVZ W.D. (Doc) Lindsey dock0evz at earthlink.net EarthLink Revolves Around You.