The PE83IR1003 from Pasternack Enterprises Inc is a RF & Microwave Isolator with Frequency 1.7 to 2.2 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for PE83IR1003 can be seen below.