The WH1202AS1 / 11.5-13.5GHz from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 11.5 to 13.5 GHz, Average Power Reverse 10 W(Load), Insertion Loss 0.6 to 1.1 dB, Isolation 18 to 30 dB, Operating Temperature -55 to 85 Degree C. Tags: Microstrip Circulator. More details for WH1202AS1 / 11.5-13.5GHz can be seen below.