The DG9-4000-8000-1122 from COM-MW is a RF & Microwave Isolator with Frequency 4 to 8 GHz, Average Power Forward 20 W, Average Power Reverse 2 W, Insertion Loss 0.5 dB, Isolation 18 to 20 dB. Tags: Coaxial Isolator. More details for DG9-4000-8000-1122 can be seen below.