The CI-495-041 from RF & Noise Components is a RF & Microwave Isolator with Frequency 490 to 500 MHz, Average Power Forward 250 W, Average Power Reverse 100 W, Insertion Loss 0.3 to 0.35 dB, Isolation 23 to 25 dB. Tags: Module with Connector, Coaxial Isolator. More details for CI-495-041 can be seen below.