The WG2002A / 18.2-21.2GHz from Sainty-Tech Communications Limited is a RF & Microwave Isolator with Frequency 18.2 to 21.2 GHz, Average Power Reverse 0.5 W (Load), Insertion Loss 0.8 dB, Isolation 17 dB, Operating Temperature -55 to 85 Degree C. Tags: Microstrip Isolator. More details for WG2002A / 18.2-21.2GHz can be seen below.