Collaborate Disseminate
We’ve said it before and we’ll say it again: being able to build your own radios is the best thing about being an amateur radio operator. Especially low-power transmitters; there’s …read more Continue reading A Super-Simple Standalone WSPR Beacon
During [Matt]’s first year of college, he found in a roundabout way that he could avoid crowds in the dining hall by accessing publicly available occupancy data that the dining …read more Continue reading Bluetooth As Proxy for Occupancy
Table service and McDonalds sound as though they should be mutually exclusive as a fundamental of the giant chain’s fast food business model, but in many restaurants there’s the option …read more Continue reading How Does Your McDonald’s Burger Get To You?
After passing an exam and obtaining a license, an amateur radio operator will typically pick up a VHF ratio and start talking to other hams in their local community. From …read more Continue reading Hams Watch For Meteors
With an ever-growing constellation of Starlink satellites whizzing around over our heads, you might be getting the urge to start experimenting with the high-speed internet service. But at $100 or …read more Continue reading Snooping on Starlink With an RTL-SDR
A solar eclipse is coming up in just a few weeks, and although with its path of totality near the southern tip of South America means that not many people will be able to see it first-hand, there is an opportunity to get involved with it even at an extreme …read more
When lost hiking out in the back country, a cell phone might not seem like the most useful tool. Absent a signal from the cellular network, it’s not possible to make outgoing calls for help. However, carrying your phone may just make it a lot easier for rescuers to find …read more
If you think your data rates suck, take pity on New Horizons. The space probe, which gave us lovely pictures of the hapless one-time planet Pluto after its 2015 flyby, continued to plunge and explore other, smaller objects in the Kuiper belt. In January of 2019, New Horizons zipped …read more
A browse through his collected works will tell you that [El Kentaro] loves to build electronics into interesting enclosures, so when he realized there’s enough room inside a 150 ml plastic syringe to mount an ESP8266, a battery, and a copious amount of RGB LEDs, the “Packet Injector” was the …read more
Continue reading This WiFi Spoofing Syringe Is For External Use Only
Sometimes the best projects are the simple, quick hits. Easily designed, fast to build, and bonus points for working right the first time. Such projects very often lead to bigger and better things, which appears to be where this low-power temperature beacon is heading.
In the world of ham radio, beacon stations are transmitters that generally operate unattended from a known location, usually at limited power (QRP). Intended for use by other hams to determine propagation conditions, most beacons just transmit the operator’s call sign, sometimes at varying power levels. Any ham that can receive the signal will know there’s …read more
Continue reading Temperature Sensor and Simple Oscillator Make a Value-Added HF Beacon