The M17/129-RG-401 from EZ Form Cable Corporation is a RF Cable with Frequency Range DC to 18 GHz, Cut off Frequency 18 GHz, Propagation Velocity 0.695, Attenuation 5 to 48 dB/100ft, Power 200 to 1400 W. Tags: Semi-Rigid. More details for M17/129-RG-401 can be seen below.