The C1BR1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.9 to 2.3 GHz, Average Power 90 W, Average Power Forward 90 W, Insertion Loss 0.25 dB, Isolation 24 dB. Tags: Module with Connectors, Coaxial Isolator. More details for C1BR1 can be seen below.