The PE-SR401FL-FT from Pasternack Enterprises Inc is a RF Cable with Frequency Range DC to 18 GHz, Cut off Frequency 18 GHz, Propagation Velocity 0.695, Attenuation 4.4 to 41 dB/100ft, Capacitance 29.6 pF/ft. Tags: Hand Formable. More details for PE-SR401FL-FT can be seen below.