In my tower design I realized I would need at least 100ft of rotor wire. I currently only have a 75' stretch. I had given up my last 200ft to my brother-in-law and didn't feel like buying another roll of 500ft. You can buy cheap stuff in 75ft. However I did have lots of CAT5 that I didn't need (I have 1000' of CAT6 I need to use first). Cheap rotor wire is typically 22 gauge. Good rotor wire is 20 gauge, CAT 5 is 24 gauge. Rotor wire is typically 3 wire (Channel Master) or 4 wire. Easy solution is to pair up wires in a CAT5 for a 4 wire cable. Pictures show a typical wire hookup, the video below shows the rotor opening at normal speeds. The rotor bolts are currently in a container of vinegar "derusting". Don't forget to cut off the unused pair to avoid shorting.