The 0130A18204001B from Woken is a RF & Microwave Circulator with Frequency 2 to 4 GHz, Average Power Forward 50 W, Insertion Loss 0.5 dB, Isolation 19 dB, Operating Temperature -20 to 70 Degree C. Tags: Coaxial Circulator. More details for 0130A18204001B can be seen below.