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  • Experience the ARRL EXPO at the Dayton Hamvention®

    Apr 21, 2010 ... The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, ... Learn More

  • Of Frogs and Canaries

    radio frequency interference (RFI) from unintentional emitters — de- vices ... from the nearest external sources of manmade noise. A common comment ... Learn More

  • FCC Special Counsel Laura Smith Visits ARRL

    Mar 11, 2009 ... Spending all Thursday afternoon with ARRL Lab staff, Smith discussed power line noise and how it can affect Amateur Radio. "Since Riley had ... Learn More

  • PROD REV.indd

    tiveness in locating noise sources. They are bidirectional and can easily be ... Both The ARRL Hand- book and our RFI web page (www.arrl.org/radio- frequency- ... Learn More

  • Troubleshooting 101: Where's the Buzz?

    radio frequency interference (RFI). It isn't possible for one person to know them all. In many cases, the noise gen- erated by different devices can sound. Learn More

  • Broadband Over Powerline (BPL)

    Jan 3, 2012 ... The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, ... Learn More

  • Auto Manufacturer's Policies

    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

  • ARRL Letter

    Apr 1, 2021 ... Celebrate World Amateur Radio Day 2021 on April 18 · FT8 Accounts for Nearly Two-Thirds of HF Activity · ARRL Podcasts Schedule · IARU Region 1 ... Learn More

  • Smart Meters

    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

  • INTERFERENCE HANDBOOK Table of Contents

    Jan 17, 2006 ... Amplifiers may also generate interference when used near strong signal sources, such as TV and radio broadcast stations, paging transmitters, or ... Learn More

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