The C2XJ3 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 2.8 to 3.4 GHz, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature 0 to 50 Degree C. Tags: Module with Connectors, Coaxial Isolator. More details for C2XJ3 can be seen below.