From left to right: Cheap zinc alloy F-81, 3-GHz F-81, 4-GHz F-81, & F-61 After spending the day recrimping cable runs and replacing wall plates at a friend's house, I started wondering about my own setup. My coaxial wall plates were mostly 'builders grade' from Leviton, bought by the contractor to match the wall color. How much insertion loss (a bad thing) could I lose from them, and how much could I improve the return loss (a good thing)? PPC loss testing PPC claims that the F connectors in typical home networks are the most common failure point for DOCSIS signaling issues, with loss of continuity in the connectors causing RF ingress/egress, reflectivity, and impedance mismatches. What you might notice when unscrewing a wall plate is that an older RG-6 or RG-59 cable might feel very sticky, as grease oozes out between the outer jacket and shielding braids, making the crimped connector come loose. It's also possible that wear and tear to the wal