RFI-Radio Frequency Interference

The purpose of this information is to help in the identification and diagnosis of radio frequency interference (RFI). RFI complaints may include noises, interference, static, whines, pops, and poor reception of stations normally receivable by the radio system. These complaints may also apply to any two-way communications radio installed in the vehicle including HAM, police, fire, business band, and cellular phones. RFI can occur as a fading signal or noise superimposed on a tuned signal.

RFI is the undesirable disturbance of an electrical system or device with another electrical system or device. The following questionnaire and diagnostic charts will help identify if there is an RFI problem in the vehicle.