The C-5SO4U-30 from Teledyne Microwave Solutions is a RF & Microwave Circulator with Frequency 5.9 to 6.4 GHz, Average Power Forward 50 W, Peak Power 1000 W, Insertion Loss 0.6 dB, Isolation 50 dB. Tags: Coaxial Circulator. More details for C-5SO4U-30 can be seen below.