The GL-T-3040-20-150 from A-Info is a RF & Microwave Isolator with Frequency 3 to 4 GHz, Average Power Forward 150 W, Average Power Reverse 60 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for GL-T-3040-20-150 can be seen below.