The DG9-18-26.5G-1253 from COM-MW is a RF & Microwave Isolator with Frequency 18 to 26.5 GHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.8 dB, Isolation 14 dB. Tags: Coaxial Isolator. More details for DG9-18-26.5G-1253 can be seen below.