The VDC-05180-20 from VidaRF is a Directional Coupler with Frequency 500 MHz to 18 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Directivity 0.5 to 12 dB, Average Power 50 W. Tags: Module with Connectors. More details for VDC-05180-20 can be seen below.