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Handheld Direction Finding Loop Antenna for RFI Location - ARRL
A good way to locate radio-frequency interference (RFI) in the HF bands is with a small direction finding antenna and a portable radio. Learn More
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What To Do if You Have an Electronic Interference Problem - ARRL
Interference occurs when undesired radio signals or electromagnetic "noise" sources are ... The ARRL has an information package called "RFI/EMI Radio Frequency ... Learn More
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Cable Television Interference - ARRL
The radio operator can do a quick check for leakage in the VHF ham bands by using a receiver designed for the Amateur Radio Service. ( A local ham can often be ... Learn More
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ARRL EMC Committee Report
Jul 17, 2024 ... ... noise, and other RFI sources. Power company attendees are generally well aware of amateur radio, as amateurs oftentimes find noise sources ... Learn More
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VDSL Testing - ARRL
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources. Learn More
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ARRL Serving its Members: NU2W's Story
Aug 15, 2025 ... The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, ... Learn More
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Radio Frequency Interference: A Customized Information Handout
Why is RFI bad? RFI negatively impacts radio communications as well as potentially degrading the proper operation of consumer electronics devices. RFI sources ... Learn More
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Product Reviews June 2016 Product Reviews: - ARRL
Al- though it is not a radio receiver, it is the amateur's tool of choice when locating an arc- ing source of RFI on a utility pole once the pole has been ... Learn More
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A Line Noise Sniffer That Works - ARRL
I tried to find the source by using an AM broadcast receiver, but I could only deter- mine a general location. My AM radio picked up the standing-wave power- ... Learn More
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LOCATE AND FIX POWER-LINE INTERFERENCE - ARRL
Use a directional antenna (HF beam in this case) and a portable shortwave radio to pinpoint sources. This provides a demonstration for the neighbor when the ... Learn More
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