This year's challenge consists of weekly exercises ranging from making a QSO on Echolink to eliminating a source of interference....
General
ARRL The National Association for Amateur Radio® has awarded a $5,000 Colvin Award grant to the Delta-Xray Group, organizers of...
ARRL The National Association for Amateur Radio® annouces four new Section Managers taking on the top volunteer leadership role in...
One of the major difficulties in studying electricity, especially when compared to many other physical phenomena, is that it cannot...
If you’ve seen a big air-variable capacitor, you may have noticed that some of the plates may have slots cut...
ARRL The National Association for Amateur Radio® is launching a year-long celebration that puts the spotlight squarely where it belongs...
The January 2, 2026, report from Spaceweather.com has updateddetails about the Coronal Mass Ejections predicted to hit the Earthon January...
If you are a schoolkid of the right age, you can’t wait to lose a baby tooth. In many cultures,...
It may be an antiquated form of communication, but many Australians from all walks of life are helping to keep...
If you work on simple digital projects, just about any bench supply will offer the voltage and current you’re looking...
If you’ve got an old black and white TV, it’s probably not useful for much. There are precious few analog...
Time is running out to be part of two exciting opportunities to make an impact with the RSGB. The Society...
On a quiet shoreline in Southern Maryland, a simple sentence made history — and the world hasn’t stopped talking since....
It’s been twenty-three years since the day Phoenix was released, the web browser that eventually became Firefox. I downloaded it...
Seven-segment displays are one of the most ho-hum ways to display the time. They were cool for a little bit...
If you want to know when the train is coming, you could pull up a webpage on your phone, or...
Thirty-seven years after the devastating Lockerbie bombing, the extraordinary efforts of amateur radio enthusiasts who provided a crucial communication lifeline...
We’ve probably all had a few conversations with people who hold eccentric scientific ideas, and most of the time they...
takes us back to basics in a recent video explaining how magnets, coils, brushed DC motors, and brushless DC motors...
The Federal Communications Commission (FCC) in October 2025 adopted a Report and Order to delete almost 400 obsolete rules pertaining...
Pre-registration is now open for a Student Coding Competition, a new national challenge sponsored by ARRL The National Association for...
The increasing dominance of lithium cells in the market place leave our trusty NiMH cells in a rough spot. Sure,...
Solar activity has been at low levels with only a few C1 flares fromRegion 4307. Slight growth and consolidation were...
It isn’t unusual to expect a precisely regulated voltage in an electronic project, but what about times when you need...
It is well known that pictographic languages that use Hanzi, like Mandarin, are difficult to work with for computer input...
