The T-4530H from Telewave is a RF & Microwave Isolator with Frequency 440 to 475 MHz, Average Power Forward 400 W, Insertion Loss 0.5 dB, Isolation 30 to 35 dB, Operating Temperature -30 to 60 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for T-4530H can be seen below.