Ridgeline Broadcast Services, LLC

Repairing holes in coax cables

Transmission lines can develop holes due to rifle bullets, chafing, lightning strikes, or arcing due to high RF fields from transmitting antennas. These can often be repaired without taking down the line by such methods as soldering, glued on patches, or rubber patches. In this case arcing burned a large hole in this 3 inch coaxial cable. The polyethylene jacket was removed and the area cleaned around the damaged area. A piece of corrugated copper was cut from an old piece of the same cable and glued on using JB Weld. The area was taped up to finish the repair. The repaired cable holds pressure and there is negligible difference in the transmission characteristics at FM radio frequencies.

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