Radio

In radiofrequency, precisely adjusting an oscillator without tools like oscilloscopes or frequency counters can be a challenge. However, together with EB1A, we discovered that it’s possible to achieve an accurate calibration of the SI5351 module using a simple JavaScript calculation tool, ideal for DIY projects like WSPR. Project goal We want the oscillator to be as close as possible to the desired frequency (in this case, 14 MHz). We’ll use a calibrated receiver, such as…

Weather probes are key devices for collecting atmospheric data and improving weather forecasts. These probes, launched daily worldwide, ascend to high altitudes and gather crucial information like temperature, pressure, and humidity. The idea of automating predictions emerged during a probe hunt with EB1A. As we approached the site, there was a “sudden silence” — we discovered that the probe had already been picked up. That was when I decided to develop a system to make…