The ADC179CD from ADMOTECH is a RF & Microwave Circulator with Frequency 1.78 to 1.81 GHz, Average Power Forward 150 W, Average Power Reverse 100 W, Insertion Loss 0.25 to 0.35 dB, Isolation 21 to 23 dB. Tags: Drop-in Circulator. More details for ADC179CD can be seen below.