The HD32951 from HD Communications Corp is a RF & Microwave Circulator with Frequency 0.1 to 0.4 GHz, Average Power 1000 to 1500 W, Insertion Loss 0.4 dB, Isolation 23 dB, Operating Temperature -20 to 85 Degree C. Tags: Coaxial Circulator. More details for HD32951 can be seen below.