The RADCorI-7.5-12-Cryo-0.02-77K-S(K)-1WR-Generic-b from Raditek is a RF & Microwave Circulator with Frequency 7.5 to 12 GHz, Average Power Forward 1 W, Average Power Reverse 1 W, Insertion Loss 0.5 to 0.6 dB, Isolation 17 to 18 dB. Tags: Coaxial Circulator. More details for RADCorI-7.5-12-Cryo-0.02-77K-S(K)-1WR-Generic-b can be seen below.