The DC3000800250GB from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 0.8 to 2.5 GHz, Coupling 30 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.7 dB, Directivity 20 dB. Tags: Module with Connectors. More details for DC3000800250GB can be seen below.