The BDC1107-20 from Federal Custom Cable is a Directional Coupler with Frequency 4 to 12.4 GHz, Coupling 20 dB, Coupling Variation +/- 1 dB, Frequency Sensitivity +/- 0.5 dB, Average Power 50 W. Tags: Module with Connectors. More details for BDC1107-20 can be seen below.