The ADC190CE from ADMOTECH is a RF & Microwave Circulator with Frequency 1.8 to 2 GHz, Average Power Forward 150 W, Average Power Reverse 100 W, Insertion Loss 0.3 to 0.4 dB, Isolation 18 to 20 dB. Tags: Drop-in Circulator. More details for ADC190CE can be seen below.