The VDC-40180-10 from VidaRF is a Directional Coupler with Frequency 4 to 18 GHz, Coupling 10 dB, Coupling Variation ±0.70 dB, Directivity 4 to 18 dB, Average Power 5 to 50 W. Tags: Module with Connectors. More details for VDC-40180-10 can be seen below.