The RMIS20.18500-18800T from Response Microwave Inc is a RF & Microwave Isolator with Frequency 18.5 to 18.8 GHz, Average Power Forward 50 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for RMIS20.18500-18800T can be seen below.