The WH902A5 / 8-12GHz from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 8 to 12 GHz, Insertion Loss 0.6 dB, Isolation 16 dB, Operating Temperature -55 to 85 Degree C. Tags: Microstrip Circulator. More details for WH902A5 / 8-12GHz can be seen below.