The D30N00450800 from Fujian MIcable is a Directional Coupler with Frequency 0.45 to 8 GHz, Coupling 30 dB, Coupling Variation ±0.7 dB, Amplitude Flatness ±0.9 dB, Directivity 18 dB. Tags: Module with Connectors. More details for D30N00450800 can be seen below.