The HX-T-433-20-300 from A-Info is a RF & Microwave Circulator with Frequency 433 MHz, Average Power Forward 300 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -40 to 70 Degree C. Tags: Coaxial Circulator. More details for HX-T-433-20-300 can be seen below.