The PE83IR1023 from Pasternack Enterprises Inc is a RF & Microwave Isolator with Frequency 8 to 18 GHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 1.4 dB, Isolation 32 dB. Tags: Module with Connector, Coaxial Isolator. More details for PE83IR1023 can be seen below.