The HDC1109-30 from Federal Custom Cable is a Directional Coupler with Frequency 4 to 8 GHz, Coupling 30 dB, Coupling Variation +/- 1 dB, Frequency Sensitivity +/- 0.75 dB, Directivity 18 dB. Tags: Module with Connectors. More details for HDC1109-30 can be seen below.