You normally think of ELINT — Electronic Intelligence — as something done in secret by shadowy three-letter agencies or the...
General
A session of the ARRL Teachers Institute on Wireless Technology (TI) is being hosted this summer by the Johns Hopkins...
With vector network analyzers, the commercial offerings seem to come in two flavors: relatively inexpensive but limited capabilities, and full-featured...
ARRL The National Association for Amateur Radio® announces that the free ARRL Events app for 2025 Dayton Hamvention® is live....
2025 ARRL Field Day will be here before you know it! We’re just 7 weeks away from ham radio’s biggest...
The Solar Geophysical Activity Report and Forecast from theUSAF/NOAA indicates that solar activity has been at low levels forthe past...
We’ve seen tons of projects lately using the ESP32-C3, and for good reason. The microcontroller has a lot to offer,...
When was the last time you saw a computer actually outlast your weekend trip – and then some? Enter the...
Sick of raiding old TVs and CRT monitors for flyback transformers to feed your high-voltage addiction? Never fear; if you’re...
There’s something cool about the visual design language used in the aviation world. You probably don’t get much exposure to...
The Heritage CQ Amateur Radio Hall of Fame, created by longtime amateur radio publisher Richard Ross, K2MGA (SK), will continue...
Despite the best efforts of the RepRap community over the last twenty years, self-replicating 3D printers have remained a stubbornly...
The ESP32 series of microprocessors with their cheap high-power cores and built-in wireless networking have brought us a wide variety...
On May 2, Spaceweather.com reported: "Astronomers are monitoring avery large sunspot now turning toward Earth. Sunspot AR4079stretches more than 140,000...
We’re just two weeks away from Dayton Hamvention®, held May 16 – 18, 2025 in Xenia, Ohio. ARRL The National...
Yaesu has released information about a new series of radios targeting both field operation and base station use cases. The...
by Sierra Harrop, W5DX Eric Tichansky, NO3M, of Saegertown, Pennsylvania, has been issued the first Worked All States award from...
Martin J. “Marty” Pittinger, KB3MXM, has resigned as Vice Director of the ARRL Atlantic Division, effective April 28, 2025. Pittinger...
Over on his YouTube channel explains biasing transistors with current sources in the 29th video of his Transistors Series. In...
The advantage of a radio-controlled clock that receives the time signal from WWVB is that you never have to set...
Applicants for the summer 2025 sessions of the ARRL Teachers Institute on Wireless Technology must apply by April 30 to...
ARRL welcomes members and all radio amateurs to visit us at the 2025 Dayton Hamvention®, May 16 —18 in Xenia,...
Solar activity has been at low levels with only minor C-classflaring through April 24, 2025, and is expected to be...
Over 280 amateur radio operators volunteered during the 129th running of the Boston Marathon on April 21, 2025. Operators were...
Although there are plenty of methods for effectively imaging a 3D space, LiDAR is widely regarded as one of the...
