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 1611 covers 8.2 - 12.4GHz, having WG16 / WR90 waveguide flanges. Attenuation range 0-60dB.

This unit is in good "used" condition as shown below, with a few bumps and scratches from normal laboratory use. Tested, in good working order.