Here are the specifications for Cat 5 "UTP" and "FTP" cables made by AMP: www.ampnetconnect.cz/documents/pdf/ds_cat_5_utp_cable_(57819).pdf www.ampnetconnect.cz/documents/pdf/ds_cat_5_ftp_cable_(57820).pdf Looks like the characteristics are identical, except that the FTP cable has an overall shield. Lyle, K0LR