The CGS-3783 from Stellant Systems is a RF & Microwave Circulator with Frequency 3.7 to 8.3 GHz, Insertion Loss 0.5 dB, Isolation 17 dB, Operating Temperature -40 to 85 Degree C. Tags: Module with Connector, Coaxial Circulator. More details for CGS-3783 can be seen below.