The ADC2040CSIH from ADMOTECH is a RF & Microwave Circulator with Frequency 2 to 4 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Insertion Loss 0.6 dB, Isolation 16.5 dB. Tags: Coaxial Circulator. More details for ADC2040CSIH can be seen below.