The C5AS1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 5.4 to 5.9 GHz, Insertion Loss 0.45 dB, Isolation 20 dB, Operating Temperature -20 to 80 Degree C. Tags: Module with Connectors, Coaxial Isolator. More details for C5AS1 can be seen below.