The Maury Microwave 8650Q is a TNC Economy Calibration Kit. The 8650Q is a low cost fixed load calibration kit covering frequencies from DC to 18 GHz. The 8650Q contains standards needed to calibrate scalar or vector analyzers and are housed in rugged, plastic instrument cases. The increased durability of the case makes the 8650Q ideal for field service use. The calibration constants provided with the kit can be keyed into the front panel of an analyzer. The 8650Q is available in a female / male configuration or in single same sex configurations.