The GL-T-11500-15000-20-5 from A-Info is a RF & Microwave Isolator with Frequency 11.5 to 15 GHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for GL-T-11500-15000-20-5 can be seen below.