The SMC-2023 from Sierra Microwave Technology is a RF & Microwave Circulator with Frequency 2 to 2.3 GHz, Average Power Reverse 2 to 150 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -54 to 85 Degree C. Tags: Coaxial Circulator. More details for SMC-2023 can be seen below.