The ADC155BF from ADMOTECH is a RF & Microwave Circulator with Frequency 1.25 to 1.85 GHz, Average Power Forward 150 W, Average Power Reverse 100 W, Insertion Loss 0.8 to 1 dB, Isolation 12 to 14 dB. Tags: Drop-in Circulator. More details for ADC155BF can be seen below.