The ISDJ-10 from MCLI is a RF & Microwave Isolator with Frequency 1.8 to 4 GHz, Average Power Forward 50 W, Peak Power Forward 0.5 kW, Insertion Loss 1 dB, Isolation 35 dB. Tags: Module with Connector, Coaxial Isolator. More details for ISDJ-10 can be seen below.