i went by a dumpster near the office space of a direct tv authorized installer Thought i had found gold. i saw some wire a few dish pieces then i started pulling out what i was hoping was some large pieces of copper core coax. i scratched it, it was still copper looking i cut it down the center it still looked all copper. (didnt have my magnet with me at time) I then googled the letters and numbers that were on the side. FOUND OUT IT WAS THAT copper steel cladded stuff. later when i got home tried the huge speaker magnet and bam! my hopes dropped like a rock.