240 coax cable provides excellent performance, but is under .25 " in diameter. It has the lowest loss of any flexible cable and comparable loss to semirigid hard-line cables. It is ideal for any GPS application that requires an easily routed, low loss RF cable.
The advantage of coaxial design is that electric and magnetic fields are restricted to the dielectric with little leakage outside the shield.
Conversely, electric and magnetic fields outside the cable are largely kept from interfering with signals inside the cable. Larger diameter cables and cables with multiple shields have less leakage. This property makes coaxial cable a good choice for carrying weak signals that cannot tolerate interference from the environment or for stronger electrical signals that must not be allowed to radiate or couple into adjacent structures or circuits