The ADC040GD from ADMOTECH is a RF & Microwave Circulator with Frequency 380 to 420 MHz, Average Power Forward 150 W, Average Power Reverse 100 W, Insertion Loss 0.35 to 0.5 dB, Isolation 16 to 18 dB. Tags: Drop-in Circulator. More details for ADC040GD can be seen below.