The DB40-020030NFH from Corech Microwave is a Dual Directional Coupler with Coupling 40 dB (Nominal), Coupling Variation ±2 dB (Balance), Frequency 2 to 3 GHz, Peak Power 2 kW, Average Power 200 W (CW). Tags: Module with Connectors, 200 W, 40 dB Dual-Directional Coupler from 2 to 3 GHz. More details for DB40-020030NFH can be seen below.