The HX-T-2000-4000-17-250 from A-Info is a RF & Microwave Circulator with Frequency 2 to 4 GHz, Average Power Forward 250 W, Insertion Loss 0.5 dB, Isolation 17 dB, Operating Temperature 0 to 50 Degree C. Tags: Coaxial Circulator. More details for HX-T-2000-4000-17-250 can be seen below.