The GL-T-1700-1900-20-2 from A-Info is a RF & Microwave Isolator with Frequency 1.7 to 1.9 GHz, Average Power Forward 2 W, Average Power Reverse 2 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for GL-T-1700-1900-20-2 can be seen below.