The PE83IR1009 from Pasternack Enterprises Inc is a RF & Microwave Isolator with Frequency 7 to 12.4 GHz, Average Power Forward 50 W, Average Power Reverse 25 W, Insertion Loss 0.6 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for PE83IR1009 can be seen below.