The BDC1105-20 from Federal Custom Cable is a Directional Coupler with Frequency 2 to 8 GHz, Coupling 20 dB, Coupling Variation +/- 1 dB, Frequency Sensitivity +/- 0.4 dB, Average Power 50 W. Tags: Module with Connectors. More details for BDC1105-20 can be seen below.