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Answering commonly asked radio frequency technology questions and terminology
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What is radio frequency interference?

RF signal interference is an interruption to a wireless connection caused by a nearby source of radio energy. This interference disrupts a device’s normal operation and can cause a decrease in performance or may even cause the device to fail. RF...
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How to detect RF interference?

RF interference is typically detected using specialized RF measurement equipment, such as RF Receivers and spectrum analyzers. These devices allow users to identify unwanted signals, view spectrum occupancy, localize the sources of interference,...
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How to block RF interference?

Depending on the source and type of interference, there are several ways to block or mitigate RF interference, including: Shielding, enclosing the source of the interference, or the sensitive equipment in a metal enclosure; and filtering, blocki...
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What is RF interference hunting?

RF interference hunting involves locating and identifying sources of RF interference that negatively affect wireless reception in a given area. The goal of RF interference hunting is to locate the source of the interferer, and then this informat...
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What is an RF interference filter?

An RF interference (RFI) filter is an electronic device designed to block or attenuate unwanted signals or noise in the RF spectrum while permitting the desired signal. These devices use various filter technologies, such as low-pass, high-pass, ...
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How to find and fix RF interference

Identify the affected system or equipment that is experiencing interference. Determine the type of interference: is it narrowband, broadband, or intermittent? Investigate potential sources of interference, which could include other RF systems, e...
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What is RF spoofing?

RF spoofing is an attack that uses a transmitter to send a target receiver malicious signals, which differ from the true signals. The goal of RF spoofing is to disrupt the normal operation of a communication system. Sophisticated RF spoofing att...
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What is RF signal exfiltration?

RF signal exfiltration is a spying technique whereby RF signals are used to transmit sensitive or secret information out of a secure facility (such as an embassy). Attackers do not need physical access to the target system and can operate from a...
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What is an RF cyber attack?

An RF cyber attack can be either an intrusion or exfiltration attack, or both, using RF signals to carry out the attack. For RF intrusion attacks, the attackers do not need physical access to the target system and can operate from a distance. Th...
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How do you detect RF jamming?

One useful way to detect an RF jammer is by using a spectrum analyzer, which measures the strength of a signal in a given frequency range. Analyzing the signal strength in different parts of the spectrum can detect any interference blocking the ...
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