The 3G6BH from Renaissance Electronics Corporation is a RF & Microwave Circulator with Frequency 3.8 to 6.05 GHz, Average Power Forward 43 W, Insertion Loss 0.7 dB, Isolation 14 dB, Operating Temperature -20 to 95 Degree C. Tags: Drop-in Circulator. More details for 3G6BH can be seen below.