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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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FCC Enforcement - 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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Contribute RFI Files - 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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Identify and Track Down - ARRL
Randy E. Standke, KQ6RS. Dealing with radio frequency inter ference (RFI) from neighborhood sources is unfortunately a part of the ham radio hobby, ... Learn More
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ARRLWeb: ARRL EMC Committee Semi-Annual Report
Jan 18, 2013 ... The EMC Committee monitors developments in the Electromagnetic Compatibility. (EMC) field and assesses their impact on the Amateur Radio Service ... Learn More
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Links - 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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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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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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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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Emitters - ARRL
Noise Source: Unidentified Where Found: 458 kHz USB, in the longwave band ... Having Trouble? Technology >> Radio Frequency Interference (RFI) >> Sounds of RFI >> ... Learn More
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