The 2W9NCX from Renaissance Electronics Corporation is a RF & Microwave Isolator with Frequency 18.3 to 20.2 GHz, Average Power Forward 1 W, Insertion Loss 0.8 dB, Isolation 17 dB, Operating Temperature -25 to 85 Degree C. Tags: Microstrip Isolator. More details for 2W9NCX can be seen below.