Radio-noise elimination in military aircraft

RADIO noise may be defined as radio-frequency energy which interferes with the reception of desired signals. This interference can be the result of: 1. Atmospheric electrical discharges which result in radiated radio frequency energy. 2. Periodic corona discharges from the airplane which cause intense electric induction fields close to the receiving antennas. 3. Receiver internal noise due to thermal agitation in the receiver input resistance and shot effect in the low-level radio-frequency stages.¹ 4. Electrical transients which result from the operation of electrical equipment.