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• In extreme situations, the refl ected RF wave (B) inverts and cancels out the direct path RF wave (A)
• To remedy this, simply move the transmitter or receiver a few inches
Electrical Interference
• Caused by the unintentional generation of RF due to an electrical spark, arc or discharge
• Any wiring connected to the spark source conducts the RF and acts as a transmitting antenna
• As a general rule, the noisier an electrical device is the potential it has of generating RF noise
• Three types of electrical interference
• RF noise from electrical equipment
• RF noise generated by electronic devices
• Interference from natural sources such as lightning
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