The Hewlett-Packard 33340C Coaxial Fixed Attenuator was the standard for precision flat response and low SWR. Attenuation values available are: 3, 6, 10, 20, 30 and 40 dB. Ideally suited for extending the range of sensitive power meters, or for use as calibration standards, these broadbａnd attenuators are manufactured with the same meticulous care as their lower frequency counterparts. Specifications. Frequency Range: DC to 26.5 GHz. Maximum SWR: DC to 8 GHz; 1.1, 8 to 12.4 GHz; 1.15, 12.4 to 26.5 GHz; 1.25, (1.27 Opt. 006). Maximum Input Power: 2W Avg. (100W Peak). Attenuation Accuracy: Opt 003, 3 dB ?? 0.5 dB (DC to 18 GHz), ?? 1.0 dB (18 to 26.5 GHz). Opt 006, 6 dB ?? 0.6 dB. Opt 010, 10 dB ?? 0.3 dB. Opt 020, 20 dB ?? 0.5 dB. Opt 030, 30 dB ?? 0.7 dB. Opt 040, 40 dB ?? 1.0 dB. Connector Type: 3.5mm (male, female).