RG59 /U SIAMESE 20AWGX1C+18AWGX2C in Close-Circuit Television(CCTV),Community Antenna Television(CATV) RG59 /U SIAMESE 20AWGX1C+18AWGX2C Combined Cable/CCTV CableThis cable is designed to carry a high-frequency or broadband signal, as a high-frequency transmission line. Sometimes DC power cable is added to the signal to supply the equipment at the other end. Such as in Close-Circuit Television( ...