Clear communications require superior antenna/radio connections. This premium-quality cable has 95%+ shield coverage. Tinned copper wire is used for the conductor and shield and is insulated by a white PVC jacket with UL markings. As a rule of thumb, use the largest coax possible to reduce signal loss between the antenna and the radio which can rob you of both transmit and receiving power. The chart shows the effect on signal loss of different sizes of coax. Price is per foot.