Hi .... I have small length of coax poking out of a wall which needs a new F-connector. However, the cable is not labeled (or at least the part coming out of the wall isn't) so I don't know if I need a connector for RG-59 cable or RG-6. Is there a way to tell by looking at it whether a cable is RG-59 or RG-6? Any characteristics of the cable itself that distinguishes it as one or the other? Thanks in advance for your guidance.