Collaborate Disseminate
Like most waves in the electromagnetic spectrum, radio waves tend to bounce off of various objects. This can be frustrating to anyone trying to use something like a GMRS or …read more Continue reading DIY Passive Radar System Verifies ADS-B Transmissions
Most hams can tell you that it’s possible to get a nasty RF burn if you accidentally touch an antenna while it’s transmitting. However, you can also cop a nasty …read more Continue reading Radio Frequency Burns, Flying a Kite, and You
In the past few years we’ve seen the rise of low-power mesh networking devices for everything from IoT devices, weather stations, and even off-grid communications networks. These radio modules are …read more Continue reading A Long-Range Meshtastic Relay
Battlelines are being drawn in Canada over the lowly Flipper Zero, a device seen by some as an existential threat to motor vehicle owners across the Great White North. The …read more Continue reading Hackaday Links: March 31, 2024
How may radios do you own? Forget the AM/FM, GMRS/FRS radios you listen to or communicate with. We’re talking about the multiple radios and antennae in your phone, your TV, your …read more Continue reading A Practical Guide To Understanding How Radios Work
Apple’s Vision Pro augmented reality goggles made a big splash in the news this week, and try as we might to resist the urge to dunk on them, early adopters …read more Continue reading Hackaday Links: February 11, 2024
Generally, the biggest problem a new ham radio operator will come across when starting out on the high frequency (HF) bands is finding physical space for the antennas. For a …read more Continue reading HF In Small Spaces
When you think of satellite communications, you probably think of a dish. But that’s not the only option — a new device from the American University of Beruit and Stanford …read more Continue reading No Dish? Try a Portable Weave Helix Antenna
Ordinarily, in order to establish communications at locations such as disaster sites, rescuers have to transport and set up relatively bulky, costly satellite dishes. Soon, however, a simple tubular antenna made of woven strips of material may get the … Continue reading Lightweight woven antenna could replace field-deployed dishes
One of the more interesting facets of GPS is that, at least from the receiver’s point-of-view, it’s a fairly passive system. All of the information beamed down from the satellites …read more Continue reading Building a GPS Receiver from the Ground Up