The D19-M2729C01 from QUEST Microwave is a RF & Microwave Circulator with Frequency 2.7 to 2.9 GHz, Average Power Forward 200 W, Average Power Reverse 10 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-in Circulator. More details for D19-M2729C01 can be seen below.