The ADC176DE from ADMOTECH is a RF & Microwave Circulator with Frequency 1.75 to 1.78 GHz, Average Power Forward 50 W, Average Power Reverse 30 W, Insertion Loss 0.55 to 0.7 dB, Isolation 15 to 18 dB. Tags: Drop-in Circulator. More details for ADC176DE can be seen below.