The ATT-290F-78-HEX-02 from Emerson Network Power Connectivity Solutions is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 8.5 dB, Power 2 Watts, Peak Power 200 Watts. Tags: Module with Connectors. More details for ATT-290F-78-HEX-02 can be seen below.