Assuming that you can't see the outer sheath of the cable, where the information is generally printed, the easiest way to tell which cable you have is to look at the center conductor of the coax. The center conductor on RG59 is a solid 22 gauge conductor, very flimsy and can be bent using finger pressure. RG6 uses an 18 gauge conductor and is very hard to bend or cut without using side cutters.
Written by Cliff Thomas - John L
Last updated on 11.02.07