The RFLC101M40M50 from RF-Lambda is a RF & Microwave Circulator with Frequency 400 to 500 MHz, Average Power Forward 100 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -40 to 85 Degree C. Tags: Coaxial Circulator. More details for RFLC101M40M50 can be seen below.