The WH502A2 / 5-6GHz from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 5 to 6 GHz, Insertion Loss 0.6 dB, Isolation 17 dB, Operating Temperature -55 to 85 Degree C. Tags: Microstrip Circulator. More details for WH502A2 / 5-6GHz can be seen below.