The RFLC-403-2 from RF-Lambda is a RF & Microwave Circulator with Frequency 3.7 to 6.5 GHz, Bandwidth 600 MHz, Average Power Forward 10 W, Insertion Loss 0.3 dB, Isolation 21 dB. Tags: Coaxial Circulator. More details for RFLC-403-2 can be seen below.