The ZFA300N-18MF-YB from ZTS Technologies is a Fixed Coaxial Attenuator that operates from DC to 18 GHz. It is available in attenuation values from 10 to 60 dB and can handle up to 300 Watts of input power. This attenuator has a VSWR of less than 1.45:1 and is available in a module that measures 110 x 120 x 305 mm with N-type Male/Female connectors.