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Switching Power Supplies a More Common Noise Source than Power Lines, ARRL Lab Manager Says
ARRL Laboratory Manager and EMI Expert Ed Hare, W1RFI, told the HamRadioNow webcast recently that switching-mode power supplies are a more common noise source for radio amateurs than electrical power lines. HamRadioNow host Gary Pearce, KN4AQ, interviewed Hare on April … Continue reading →
“Thinking Day” Activity Gets Girl Scouts Thinking About Ham Radio
Amateur Radio Weather Spotters Help Track Severe Weather in North-Central Illinois
Amateur Radio weather spotters were on alert April 9 as severe weather and at least two tornadoes ripped through North-Central Illinois. At least one person died in DeKalb County, and at least seven others were injured. A tornado watch was … Continue reading →
New iOS App Available for The ARRL Repeater Directory®
May Edition of Digital QST Now Available
The May Edition of Digital QST is Now Available • Keep in touch on the trail by using your Android smartphone as an APRS tracker. • Learn how to integrate ham transceivers into modern vehicle electrical systems. • Build a … Continue reading →
The K7RA Solar Update
Solar activity continues to weaken. Average daily sunspot numbers dropped 27.8 points to 50.1 on April 2-8, compared to the previous seven days. Average daily solar flux declined 17.3 points to 118.4 over the same period. The latest prediction has … Continue reading →
Amateur Radio Gear, Tools, Supplies Bound for Micronesia in Wake of Tropical Cyclone
A shipment of ham radio equipment, tools, and supplies will head from Hawaii to the Federated States of Micronesia (FSM) this week with John Bush, KH6DLK/V63JB. The radio gear will support communication for relief efforts as the FSM recover from … Continue reading →
WWV’s 25 MHz Signal Still Going Strong After 1 Year Back on the Air
Time and frequency standard station WWV silenced its 25 MHz signal in 1977, but it returned to the air on an “experimental basis” a year ago, and it’s still up and running. Resurrecting the long-dormant standard time outlet operated by … Continue reading →
Add a Scope to your Shack! Oscilloscopes for Radio Amateurs Now Available from ARRL
Oscilloscopes are useful tools in the world of electronics, allowing radio amateurs to “see” the signals inside their equipment. Through personal computers and today’s technologies, a variety of analog, digital, or hybrid scopes is available to hams for problem solving … Continue reading →