The ID1843D from Orion Microwave Inc. is a RF & Microwave Isolator with Frequency 1.8 to 1.88 GHz, Average Power 100 W, Average Power Forward 100 W, Average Power Reverse 20 W, Peak Power Forward 1 kW. Tags: Drop-In, Drop-In Isolator. More details for ID1843D can be seen below.