The 317.2005-30/NF from Microwave Devices Inc. is a Directional Coupler with Frequency 2 to 4 GHz, Coupling 30±1.25 dB, Coupling Variation ±1.25 dB, Frequency Sensitivity ±0.75 dB, Directivity 18 dB. Tags: Module with Connectors. More details for 317.2005-30/NF can be seen below.