Sliding Load 3-26.5 GHz

From manufacturer product guide: The HP 911D sliding load represents an advance in calibration and network analyzers. The new load utilizes integral male connectors to form a near perfect airline without the discontinuities, which cause refelctions, associated with changeable connectors. The sliding load element is highly stable, with a reflection coefficient variation of less than 0.00032 as the location of the element is varied, providing a very accurate and consistent reflection which greatly increases the integrity of a calibration..