The R11644A is a Mechanical WR-28 Calibration Kit.
The R11644A calibration kit contains the precision mechanical standards required to calibrate the systematic errors of network analyzers.
This calibration kit has a precision airline for performing the Thru-Reflect-Line (TRL) calibration, the most accurate error-correction technique for coaxial measurements.
This R11644A waveguide calibration kit is used to calibrate network analyzer systems (such as the 8510, 872x, or PNA series). With the calibration data properly loaded in the network analyzer and a measurement calibration completed, systematic errors are minimized.
Keysight R11644A 26.5 GHz to 40 GHz R Band WR-28 Calibration Kit and other Calibration Kits for sale at Test Equipment Center.
Keysight R11644A products for sale at Test Equipment Center are thoroughly tested, and receive electrical and cosmetic reconditioning as needed prior to sale. All products include a 90 day warranty from Test Equipment Center to ensure your complete satisfaction.
Test Equipment Center sells used Calibration Kits and RF Network Analyzers from Keysight , Agilent, Hewlett Packard, and many other test equipment manufacturers.
Test Equipment Center - New and Used Test Equipment Sales
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26.5 GHz to 40 GHz Frequency Range 
