The CI-1300-079 from RF & Noise Components is a RF & Microwave Isolator with Frequency 1.2 to 1.4 GHz, Average Power Forward 250 W, Average Power Reverse 100 W, Insertion Loss 0.3 to 0.4 dB, Isolation 21 to 24 dB. Tags: Module with Connector, Coaxial Isolator. More details for CI-1300-079 can be seen below.