The ISDJ-3 from MCLI is a RF & Microwave Isolator with Frequency 700 to 800 MHz, Average Power Forward 200 W, Insertion Loss 0.8 dB, Isolation 40 dB, Operating Temperature -20 to 65 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for ISDJ-3 can be seen below.