abbreviation (Electrical engineering: Communication) RFI is unwanted noise from RF sources. ⇒ The attenuator is especially useful in applications where balanced audio devices near strong RFI sources, such as AM radio stations, are connected by long cable runs. ⇒ Improve the performance of every component in your audio/video system by reducing RFI that comes with the main AC line. ⇒ RFI is unwanted noise from RF sources.
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