The HX-T-670-860-20-250 from A-Info is a RF & Microwave Circulator with Frequency 670 to 860 MHz, Average Power Forward 50 W, Insertion Loss 0.3 dB, Isolation 20 dB, Operating Temperature 0 to 50 Degree C. Tags: Coaxial Circulator. More details for HX-T-670-860-20-250 can be seen below.