The C-7S83U-40 from Teledyne Microwave Solutions is a RF & Microwave Circulator with Frequency 7.6 to 18.0 GHz, Average Power Forward 50 W, Peak Power 1000 W, Insertion Loss 0.8 dB, Isolation 16 dB. Tags: Coaxial Circulator. More details for C-7S83U-40 can be seen below.