Just on coax, get a good magnet, like one from a hard drive to check to determine if the center conductor is Cu or steel coated with a little Cu. I find that DirectTV coax is generally solid Cu center conductor, also coax used by Hams, CB'ers, and commercial radio, including that used in vehicales. For me it is worthwhile to stripe the coax with the solid Cu center conductors and you will find that the shielding in many is often tinned Cu(it looks silver in color). Alot of the shielding is Al so its easy to tell the difference by the weight of each after you strip it. Best of luck, Mike.
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