The 317.2001-40/NF from Microwave Devices Inc. is a Directional Coupler with Frequency 500 MHz to 1 GHz, Coupling 40±1.25 dB, Coupling Variation ±1.25 dB, Frequency Sensitivity ±0.75 dB, Directivity 22 dB. Tags: Module with Connectors. More details for 317.2001-40/NF can be seen below.