The GL-T-990-1010-25-20 from A-Info is a RF & Microwave Isolator with Frequency 990 MHz to 1.01 GHz, Average Power Forward 20 W, Average Power Reverse 20 W, Insertion Loss 0.3 dB, Isolation 25 dB. Tags: Module with Connector, Coaxial Isolator. More details for GL-T-990-1010-25-20 can be seen below.