The WH502A3 / 5.2-5.9GHz from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 5.2 to 5.9 GHz, Insertion Loss 0.5 dB, Isolation 18 dB, Operating Temperature -55 to 85 Degree C. Tags: Microstrip Circulator. More details for WH502A3 / 5.2-5.9GHz can be seen below.