The LHX-2/6-IN from Leader-MW is a RF & Microwave Circulator with Frequency 2 to 6 GHz, Average Power Forward 20 W, Insertion Loss 0.85 to 1.7 dB, Isolation 12 dB, Operating Temperature -40 to 70 Degree C. Tags: Drop-in Circulator. More details for LHX-2/6-IN can be seen below.