The HX-T-68-18-500_L29 from A-Info is a RF & Microwave Circulator with Frequency 600 to 800 MHz, Average Power Forward 500 W, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature -20 to 70 Degree C. Tags: Coaxial Circulator. More details for HX-T-68-18-500_L29 can be seen below.