The RG217/U from Pasternack Enterprises Inc is a RF Cable with Frequency Range DC to 5 GHz, Cut off Frequency 5 GHz, Propagation Velocity 66%, Attenuation 0.42 to 19 dB/100 ft, Capacitance 30.8 pF/ft. Tags: Flexible. More details for RG217/U can be seen below.