LOW LOSS- The loss of 100ft kmr400 pl259 coaxial cable at 450MHZ signal frequency is less than 2.8dB and the SWR 1.25. There is no need to worry about signal loss for long-distance high-frequency use. Well Built Structure] - The inner conductor of this pl259 cable is made of copper clad aluminium, and the outer conductor is made of Aluminum foil and tinned copper braid which could maximum protect the signal over large distance.It could be better in resist oxidation.