The 317.2003-30/NF from Microwave Devices Inc. is a Directional Coupler with Frequency 1.5 to 3 GHz, Coupling 30±1.25 dB, Coupling Variation ±1.25 dB, Frequency Sensitivity ±0.85 dB, Directivity 17 dB. Tags: Module with Connectors. More details for 317.2003-30/NF can be seen below.