The CX5A4 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 554 to 590 MHz, Average Power 1 kW, Average Power Forward 1 kW, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for CX5A4 can be seen below.