The SR250AL-LL from ANOISON Electronics LLC is a RF Cable with Frequency Range DC to 20 GHz, Cut off Frequency 20 GHz, Propagation Velocity 0.76, Attenuation 1.83 to 25.32 dB/ft, Power 0.274 to 4.338 kW. Tags: Flexible, Hand Formable, Semi-rigid. More details for SR250AL-LL can be seen below.