The HX-T-800-1000-18-500 from A-Info is a RF & Microwave Circulator with Frequency 800 MHz to 1 GHz, Average Power Forward 500 W, Insertion Loss 0.5 dB, Isolation 18 dB, Operating Temperature -20 to 70 Degree C. Tags: Coaxial Circulator. More details for HX-T-800-1000-18-500 can be seen below.