The human eye’s color perception is notoriously variable (see, for example, the famous dress), which makes it difficult to standardize...
General
Former ARRL Southeastern Division Director Frank Butler, W4RH, has become a Silent Key. He passed away at the age of...
Solar activity was at low levels on 28 July to 02 August and moderate levels on 03 August. The largest...
USB-C has enabled a lot of great things, most notably removing the no less than three attempts to plug in...
Here’s something fun from our hacker : Software Defined ROMs. In this series of three videos, runs us through what...
ARRL The National Association for Amateur Radio® is seeking qualified applicants for several positions at our headquarters in Newington, Connecticut....
The MOS Technology 6502 is a microprocessor which casts a long shadow over the world of computing. Many of you...
Lightning is a powerful force, one seemingly capable of great destruction in the right circumstances. It announces itself with a...
Former longtime ARRL Central Division Director George “Dick” Isely, W9GIG, has become a Silent Key. He passed away on July...
managed to find a professional FAA-certified flight simulator at an auction (a disassembled, partial one anyway) and wondered, what would...
Many people who get analog electronics still struggle a bit to design oscillators. Even common simulators often need a trick...
The 2025 ARRL Alabama State Convention at the Huntsville Hamfest is August 16 – 17 at the Von Braun Center...
Our hacker wrote in to let us know about a video he put together to explain the design of his...
The numbers are in and showing growth. 2025 ARRL Field Day showed an increase in both participants and entries, compared...
There’s a new resource from ARRL documenting the history of ham radio. Radio Alpha is the ARRL® Museum and Research...
Spaceweather.com reports solar activity was at low levels with only minor C-class flares observed. Region 4154 produced a C1.4 flare...
had an ancient HP 545A logic probe, which was great for debugging SMT projects. The only problem was that being...
When asked ‘what makes you tick?’ the engineers at Vacheron Constantin sure know what to answer – and fast, too....
When we do textbook analysis, we tend to ignore the real-world concerns for the sake of learning. So, a typical...
ARRL The National Association for Amateur Radio® reports that Amateur Radio Operators, including volunteers serving in the ARRL® Amateur Radio...
submitted their Ham Radio foxhunt transmitter project for the 2025 One Hertz Challenge. This is a clever Spartan build. In...
ARRL The National Association for Amateur Radio® has filed comments with the Federal Communications Commission (FCC) to oppose part of...
Amateur radio had a crucial role in locating a mother and her 9-year son lost in California’s Stanislaus National Forest....
Solar activity was at low levels. The largest flare was a C7.6 from Region 4136. C-class activity was also observed...
This obituary has been written by and provided to ARRL by The Daily DX. With deep respect and gratitude, the...
