The DB30-020027SF from Corech Microwave is a Dual Directional Coupler with Coupling 30 dB (Nominal), Coupling Variation ±1 dB (Balance), Frequency 2 to 2.7 GHz, Peak Power 2 kW, Average Power 50 W (CW). Tags: Module with Connectors, 50 W, 30 dB Dual-Directional Coupler from 2 to 2.7 GHz. More details for DB30-020027SF can be seen below.