The HD32987 from HD Communications Corp is a RF & Microwave Circulator with Frequency 0.6 to 0.8 GHz, Average Power 150 W, Insertion Loss 0.35 dB, Isolation 19 dB, Operating Temperature -30 to 70 Degree C. Tags: TAB, Drop-in Circulator. More details for HD32987 can be seen below.