The DB20-020060NFH from Corech Microwave is a Dual Directional Coupler with Coupling 20 dB (Nominal), Coupling Variation ±1 dB (Balance), Frequency 2 to 6 GHz, Average Power 200 W (CW), Insertion Loss 0.35 dB. Tags: Module with Connectors, 200 W, 20 dB Dual-Directional Coupler from 2 to 6 GHz. More details for DB20-020060NFH can be seen below.