The C1BU2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.7 to 2 GHz, Average Power 50 W, Average Power Forward 50 W, Peak Power 200 W, Insertion Loss 0.25 dB. Tags: Module with Connectors, Coaxial Isolator. More details for C1BU2 can be seen below.