The C-1S83U-10 from Teledyne Microwave Solutions is a RF & Microwave Circulator with Frequency 1.7 to 4.2 GHz, Average Power Forward 50 W, Peak Power 1000 W, Insertion Loss 0.7 dB, Isolation 16 dB. Tags: Coaxial Circulator. More details for C-1S83U-10 can be seen below.