The D25-L8689C01 from QUEST Microwave is a RF & Microwave Circulator with Frequency 869 to 894 MHz, Average Power Forward 200 W, Average Power Reverse 10 W, Insertion Loss 0.4 dB, Isolation 23 dB. Tags: Drop-in Circulator. More details for D25-L8689C01 can be seen below.