The 2618 from KRYTAR is a Directional Coupler with Frequency 1.7 to 20 GHz, Coupling 16 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.4 to ±0.55 dB, Directivity 13 to 15 dB. Tags: Module with Connectors. More details for 2618 can be seen below.