The RFLC-403-1 from RF-Lambda is a RF & Microwave Circulator with Frequency 3.7 to 6.5 GHz, Bandwidth 300 MHz, Average Power Forward 10 W, Insertion Loss 0.25 dB, Isolation 23 dB. Tags: Coaxial Circulator. More details for RFLC-403-1 can be seen below.