The GL-T-1214-18-1 from A-Info is a RF & Microwave Isolator with Frequency 1.2 to 1.4 GHz, Average Power Forward 1 W, Average Power Reverse 1 W, Insertion Loss 0.4 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for GL-T-1214-18-1 can be seen below.