A rotary vane attenuator provides accurate and repeatable attenuation across a broad bandwidth, and the Flann Microwave 110 series is the industry standard to which all others are compared. The model 2211 covers 26.5 - 40GHz, having WG22 / WR28 waveguide flanges. Attenuation range 0-60dB.

This unit is in "used" condition as shown below, with a few bumps and scratches from normal laboratory use. The control knob and pointer ar missing, appears otherwise complete. For repair / parts.