The 4226-10 from Narda-MITEQ is a Directional Coupler with Frequency 500 MHz to 18 GHz, Coupling 10 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±1.1 dB, Directivity 12 to 15 dB. Tags: Module with Connectors. More details for 4226-10 can be seen below.