The HSC0185 from Star Microwave is a RF & Microwave Circulator with Frequency 1.7 to 2 GHz, Average Power Forward 150 W, Insertion Loss 0.35 dB, Isolation 20 dB, Operating Temperature -20 to 85 Degree C. Tags: Coaxial Circulator. More details for HSC0185 can be seen below.