can make your own with some cat5e network cable and the rj connectors. go to yhe eq6 yahoo user group site
http://groups.yahoo.com/group/EQ6/ andd look for the handbox cable configuration diagram
http://f5.grp.yahoofs.com/v1/wBJDRI2...ams%202006.pdf note there can be loss of signal if the cable is too long.