The GDC0I30 from Star Microwave is a RF & Microwave Circulator with Frequency 1.25 to 1.35 GHz, Average Power Forward 200 W, Average Power Reverse 110 W, Insertion Loss 0.3 dB, Isolation 22 dB. Tags: Drop-in Circulator. More details for GDC0I30 can be seen below.