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This paper describes a technique and measurement program to demonstrate the correlation between surface currents and radiated fields, for frequencies of 30 MHz above. The importance of this activity stems from the necessity to design equiment to meet regulatory radiated emission requirements as well as maintain low radiated emissions during the production phase. It is extremely costly to carry out free field radiated emission testing during production, and virtually impossible during initial design of equipment because of so few equipments being available. Therefore, this technique has significant potential value because it permits the measurement of current on prototype subsystems while operating in a laboratory. The rest of the paper will be organized as follows: Current sensor and its calibration; How to use the current sensor; Measurement of currents and field intensities; Description of the model to calculate field intensities using the measured current; Correlation achieval and factors affeting correlation.