-
The EMI Finder - ARRL
Some of the typical broadband emit- ters of radio frequency interference. (RFI) that you can pinpoint are power- line insulators, computers and indus- trial ... Learn More
-
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
-
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
-
Television - ARRL
For an antenna-connected TV, the first filter to try is a high-pass filter. These are available from Radio Shack. Several other sources are listed on the RFI ... Learn More
-
ARRL Letter
Mar 4, 2021 ... Approaches to Tackle Noise Problems Vary, Remedies Elusive · ARISS, NASA, and ESA Continue to Probe Amateur Radio Problems on ISS · Quantum ... Learn More
-
ARRL EMC Committee Semi-Annual Report
FCC limits, noise in the ham bands is minimal or non-existent. It is not ... RFI COMPLAINTS BY SOURCE: Power Line Noise. 45. Amateur Radio. 24. Unknown. 31. Learn More
-
By Ed Hare, W1RFI - ARRL
The number of products sold that could make radio noise in in the many tens of thousands, and even it had the signature of a Model XYZ Panashibi supply, a Model. Learn More
-
FCC enforcement involving electric utilities - ARRL
... noise sources on power lines and scheduling various utility staff to perform ... Having Trouble? Technology >> Radio Frequency Interference (RFI) >> Power Line >> ... Learn More
-
ARRL Encourages Comprehensive Noise Floor Study
Aug 15, 2016 ... The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, ... Learn More
-
ARRL EMC Committee Report
Aug 27, 2024 ... Item 1 - Lab Issues - W1EMI reports that he had more than 32 RFI cases in the first half of 2024. ... WA6MEM reported on a wideband noise source ... Learn More
NEW TO ARRL
LEARN MORE ABOUT
MEMBER QUICK LINKS
LICENSING LINKS
IN THE ARRL STORE
Copyright © 2026 The American Radio Relay League, Inc. All rights reserved. Reproduction of material from any ARRL web page without written permission is strictly prohibited.