The C1XK12 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1 to 2 GHz, Average Power 50 W, Average Power Forward 50 W, Insertion Loss 0.5 dB, Isolation 17 dB. Tags: Module with Connectors, Coaxial Isolator. More details for C1XK12 can be seen below.