The GL-T-170175-23-20 from A-Info is a RF & Microwave Isolator with Frequency 17 to 17.5 GHz, Average Power Forward 20 W, Average Power Reverse 5 W, Insertion Loss 0.5 dB, Isolation 23 dB. Tags: Module with Connector, Coaxial Isolator. More details for GL-T-170175-23-20 can be seen below.