The HP Agilent S382C Variable Waveguide Attenuator provides an attenuation range of 0 to 60 dB, a frequency range of 2.6 to 3.95GHz and an accuracy of Tone1% of reading or 0.1 dB whichever greater, Tone2% above 50 dB. Waveguide: WR 284. Equivalent Flange: UG-584/U.