The 2306 Series from Insulated Wire is a RF Cable with Frequency Range 0.5 to 26.5 GHz, Cut off Frequency 26.5 GHz, Propagation Velocity 0.84, Cable Diameter 0.292 Inches, Attenuation 0.04 to 0.36 dB/ft.. Tags: Flexible. More details for 2306 Series can be seen below.