The RI3538XS-690-810 from ZTS Technologies is a RF & Microwave Isolator with Frequency 0.69 to 0.81 GHz, Average Power Forward 100 W, Average Power Reverse 20 W, Insertion Loss 0.30 dB, Isolation 23 dB. Tags: Module with Connector, Coaxial Isolator. More details for RI3538XS-690-810 can be seen below.