Which of the following may cause receive interference to an HF transceiver installed in a vehicle?
The battery charging system
The fuel delivery system
The control computers
All these choices are correct✓الإجابة الصحيحة
الشرح
A modern vehicle contains many sources of conducted and radiated noise: alternator and charging regulation, fuel pumps and injectors, and the switching and clock circuits of engine and body control computers. All of them can couple into an HF receiver through the power leads or the antenna.