The ADC052GD from ADMOTECH is a RF & Microwave Circulator with Frequency 470 to 570 MHz, Average Power Forward 150 W, Average Power Reverse 100 W, Insertion Loss 0.45 to 0.65 dB, Isolation 14 to 16 dB. Tags: Drop-in Circulator. More details for ADC052GD can be seen below.