The D25-M1214C01 from QUEST Microwave is a RF & Microwave Circulator with Frequency 1.2 to 1.4 GHz, Average Power Forward 200 W, Average Power Reverse 10 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Drop-in Circulator. More details for D25-M1214C01 can be seen below.