The DC2000520600GB from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 0.52 to 6 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±1 dB, Directivity 22 to 25 dB. Tags: Module with Connectors. More details for DC2000520600GB can be seen below.