The INA-0555 from Stellant Systems is a RF & Microwave Isolator with Frequency 0.475 to 0.55 GHz, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature -20 to 65 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for INA-0555 can be seen below.