The BDC-020080-20 from Atlantic Microwave is a Directional Coupler with Frequency 2 to 8 GHz, Coupling 20 dB, Coupling Variation ± 1 dB, Frequency Sensitivity ±1 dB, Directivity 20 dB. Tags: Module with Connectors. More details for BDC-020080-20 can be seen below.