The M17/129-RG-401 from Cross RF is a RF Cable with Frequency Range DC to 23.3 GHz, Cut off Frequency 23.3 GHz, Propagation Velocity 0.85, Cable Diameter 0.300 Inches, Attenuation 2.0 to 16.0 dB/100ft (1 GHz to 900 MHz). Tags: Flexible. More details for M17/129-RG-401 can be seen below.