The HDC1110-30 from Federal Custom Cable is a Directional Coupler with Frequency 4 to 12 GHz, Coupling 30 dB, Coupling Variation +/- 1 dB, Frequency Sensitivity +/- 0.6 dB, Directivity 15 dB. Tags: Module with Connectors. More details for HDC1110-30 can be seen below.