Category: General

Scientists in Alaska Attempt to Produce Artificial Aurora

Sometimes, experiments don’t work out as planned. In late September, Christopher Fallen and technicians at the High Frequency Active Auroral Research Program (HAARP) near Gakona, Alaska, switched on a giant array of 180 antennas. They were hoping to produce radio-induced airglow, also known as artificial aurora, as a way to better understand the mechanics of […]

845 Life: Newburgh teen is a real pro with amateur radio (New York)

When all communication fails, there are always amateur radio operators to step in. Natural disasters such as hurricanes and storms can cause flooding and disable systems: But they don’t affect amateur radio. “After Hurricane Sandy, our system was activated to help communicate emergencies throughout the region,” says Sean Flynn, 17, of the Town of Newburgh. […]

Weird IP networks: Internet via birds and ham radios

If you’re reading this, you have internet access. You probably have it either through a local cable or fibre ISP or through your cell phone provider. We all have one (usually both) of these. Speedy. Reliable (mostly). Boring. What happens when that infrastructure goes down? Maybe the power goes out somewhere along the network. Maybe […]

World Maker Faire Visitors Urged to Build, Make, Create, Communicate

Ham radio exhibitors at the 2017 World Maker Faire in New York City over the September 23 – 24 weekend urged visitors to “build, make, create, communicate.” Three Amateur Radio clubs took part in the event, held at the New York Hall of Science in Corona, Queens. World Maker Faire drew upward of 90,000 visitors […]

via HACKADAY: World’s Largest Telescope Stopped by LED

Earlier this year a simple indicator LED brought the Keck 1 telescope, a 370 tons mass, to a halting stop. How exactly did an LED do this? Simple: it did nothing. As it so happens, [Andrew Cooper] was just about the leave the summit of Mauna Kea (in Hawaii) when his radio instructed him otherwise: […]

via HACKADAY: Cuban Embassy Attacks and The Microwave Auditory Effect

If you’ve been paying attention to the news, you may have seen a series of articles coming out about US staffers in Cuba. It seems that 21 staffers have suffered a bizarre array of injuries ranging from hearing loss to dizziness to concussion-like traumatic brain injuries. Some staffers have reported hearing incapacitating sounds in the […]

via the ARRL: Clubs Active in ARRL Contest Club Competitions Advised to Review Member Eligibility Lists

ARRL Contest Branch Manager Bart Jahnke, W9JJ, suggests that now would be an opportune occasion to review club membership eligibility lists for the 2017-2018 contest season. See “ARRL Contest Changes for 2017-2018” in September QST (p 91) or on the ARRL website, for background information. Contest clubs planning to participate in club competitions, with ARRL November Sweepstakes being next up, […]

Tuned out: Moyer Electronics to shutter after 70 years in business (Pennsylvania)

An electronics parts store that has been doing business in the city for 70 years will be closing its doors Oct. 1. But Moyer Electronics will still be able to serve Hazleton customers from its other stores in Pottsville and Sunbury, its owner said. Bill Moyer, whose father, Charles, started the business in Pottsville in […]

Radio Stations in Puerto Rico Struggling

It’s hard to determine exactly how many radio broadcast signals still exist on Puerto Rico following Hurricane Maria. We do know Puerto Rico’s electrical grid is shredded and will take months to rebuild so any radio stations on the air right now are probably operating on a backup power source. Communication to the island is […]

via the ARRL: Secure Forms on the ARRL.org Website

The security of your information on the ARRL website is extremely important to the League. ARRL has taken steps to encrypt/secure all forms on the site that contain personal or account information by using Hyper Text Transfer Protocol Secure (HTTPS).This includes the Shopping Cart checkout, the ARRL Donation Form, the site Login form, the Edit your Profile form, […]

via HACKADAY: What’s the Best Way to Learn Electronics?

What’s the best way to learn electronics? It’s a pithy question to ask a Hackaday audience, most of whom are at least conversant in the field already. Those who already have learned often have just their own perspective to draw upon—how they themselves learned. Some of you may have taught others. I want to explore […]

via HACKADAY: In-Band Signaling: Coded Squelch Systems

In the first part of our series on in-band signaling, we discussed one of the most common and easily recognizable forms of audio control, familiar to anyone who has dialed a phone in the last fifty years – dual-tone multifrequency (DTMF) dialing. Our second installment will look at an in-band signaling method that far fewer […]

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