The HX-T-300-500-15-50 from A-Info is a RF & Microwave Circulator with Frequency 300 to 500 MHz, Average Power Forward 50 W, Insertion Loss 1 dB, Isolation 15 dB, Operating Temperature -20 to 70 Degree C. Tags: Coaxial Circulator. More details for HX-T-300-500-15-50 can be seen below.