Did you know that MIL-STD-461G (4.3.11) deleted the requirement for periodic calibration of passive antenna, current probe and LISN calibration unless repaired?

Concern: The premise for deletion of this calibration is that the system integrity check in the procedures would determine acceptability. However, the procedure integrity check removes the antenna so it is not checked with a known signal level. The procedure also calls for detection of a signal from a stub radiator without knowing the field strength of the signal. Antenna with a balun or connected elements that could be loose or corroded would go unchecked. If adopting the no calibration approach, you should generate a known signal level and fix radiator and receive antenna at a specific location to obtain a repeatable check and track the periodic integrity checks for trends to identify changes that could affect your measurements.

Article Reference ID: DYK00001

Posted in: Did You Know? MIL-STD-461G