The PE83IR1031 from Pasternack Enterprises Inc is a RF & Microwave Isolator with Frequency 6 to 18 GHz, Average Power Forward 10 W, Insertion Loss 1.5 dB, Isolation 10 dB, Operating Temperature -20 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for PE83IR1031 can be seen below.