The CI-1300-411 from RF & Noise Components is a RF & Microwave Isolator with Frequency 1.15 to 1.45 GHz, Average Power Forward 250 W, Average Power Reverse 100 W, Insertion Loss 0.35 to 0.4 dB, Isolation 20 to 23 dB. Tags: Module with Connector, Coaxial Isolator. More details for CI-1300-411 can be seen below.