The FBT-400 from Times Microwave Systems is a RF Cable with Frequency Range 30 to 5800 MHz, Cut off Frequency 5.8 GHz, Propagation Velocity 0.76, Cable Diameter 0.37 Inches, Attenuation 0.5 to 7.1 dB/100ft.. Tags: Flexible. More details for FBT-400 can be seen below.