The CP-4577-NT from UTE Microwave is a RF & Microwave Circulator with Frequency 4.30 to 5.10 GHz, Average Power Reverse 1 W, Insertion Loss 0.3 to 0.6 dB, Isolation 20 to 40 dB. Tags: Coaxial Circulator. More details for CP-4577-NT can be seen below.