The 18 G Attenuator from Inmet by Spectrum Control has GPO connectors and operates from DC to 18 GHz. It has attenuation values from 0 to 10 dB (in 1 dB Increments), 12 dB, 15 dB, 20 dB and 30 dB. The attenuators can handle up to 2 Watts of power and have a VSWR below 1.35:1 through the band. They are matched to 50 Ohms.