The ADC740DD from ADMOTECH is a RF & Microwave Circulator with Frequency 7.1 to 7.5 GHz, Average Power Forward 30 W, Average Power Reverse 20 W, Insertion Loss 0.35 to 0.6 dB, Isolation 18 to 20 dB. Tags: Drop-in Circulator. More details for ADC740DD can be seen below.