The PDC-1G4G-30C-NFF from Quantic PMI (Planar Monolithics) is a Directional Coupler with Frequency 1 to 4 GHz, Coupling 30 dB, Coupling Variation ± 1 dB, Directivity 17 dB, Average Power 400 W. Tags: Module with Connectors. More details for PDC-1G4G-30C-NFF can be seen below.