The CCES-4.4-5 from ESJ Technology is a RF & Microwave Circulator with Frequency 4.4 to 5 GHz, Average Power Forward 100 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -30 to 70 Degree C. Tags: Coaxial Circulator. More details for CCES-4.4-5 can be seen below.