The CI-410-033 from RF & Noise Components is a RF & Microwave Isolator with Frequency 390 to 430 MHz, Average Power Forward 250 W, Average Power Reverse 100 W, Insertion Loss 0.35 to 0.4 dB, Isolation 20 to 23 dB. Tags: Module with Connector, Coaxial Isolator. More details for CI-410-033 can be seen below.