The 317.2217-XN from Microwave Devices Inc. is a Directional Coupler with Frequency 12 to 14 GHz, Coupling 30 to 50 Db, Coupling Variation ±1.5 dB, Frequency Sensitivity ±1.00 dB, Directivity 12 dB. Tags: Module with Connectors. More details for 317.2217-XN can be seen below.