The 5-9174-10 from ARRA Inc. is a Directional Coupler with Frequency 4 to 18 GHz, Coupling 10 dB, Coupling Variation ±1 dB, Frequency Sensitivity 0.5 dB, Directivity 12 to 15 dB. Tags: Module with Connectors. More details for 5-9174-10 can be seen below.