... .Advantages: Low attenuation, low standing wave, high shielding, damp-proof gas free maintenance, flexible, high anti tensile strength.Application Range: Broadcast ... )Attenuation at 900MHz(dB/100m)Attenuation at 1800MHz(dB/100m)1/4" SF501.905.006.407.6018.4027.101/4"502 ... .413.70 Electricial Performance: 50 ohm rf feeder coaxial cable(1/4",1/2",5/8",7/8",1-1/4,1-5/8)