The RG142PURBK from ANOISON Electronics LLC is a RF Cable with Frequency Range DC to 6 GHz, Cut off Frequency 6 GHz, Propagation Velocity 0.7, Cable Diameter 0.193 Inches, Attenuation 0.119 to 0.360 dB/ft. Tags: Flexible, Hand Formable, Semi-rigid. More details for RG142PURBK can be seen below.