The PE83IR1000 from Pasternack Enterprises Inc is a RF & Microwave Isolator with Frequency 1 to 2 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Insertion Loss 0.6 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for PE83IR1000 can be seen below.