A motley collection of ideas
The meteorological radiosonde is an interesting creature. It sets off from somewhere beneath a large white balloon, measures the atmosphere’s temperature, humidity, pressure and GPS coordinates, and then, when the balloon bursts, the instrument descends to the ground. For meteorologists, the story more or less ends here; for radio amateurs and radiosonde hunters, however, this … Read more
I have a cat who likes to sleep next to me. In the mornings she wakes me up very sweetly — unless I fail to get up on time. Then she switches to more persuasive methods, and occasionally the pillowcase pays the price. Since proper pillow covers are not exactly cheap, and ours were disappearing … Read more
Anyone who has ever prepared a technical article, scientific paper, or DIY tutorial knows the problem: diagrams are often perfect as they are, except for one thing—the labels are in the wrong language. Redrawing the figure takes time, manual editing is slow and complicated, and a careless AI image edit can easily crop the edges, … Read more
I wanted a simple, inexpensive antenna for my Little Airshow Radio. The 108–137 MHz range is the VHF airband, where the wavelength is roughly 2.18 m to 2.73 m. That means any resonant antenna designed for this range tends to be physically large. If you’re looking for a small, portable solution, you’ll need to make a few compromises. … Read more
This device was sold in Hungary by ALDI and eMAG, among others, for €8–9, but I have also seen it in foreign online stores priced between €10 and €25. It is a Peltier-element dehumidifier, which in principle removes water from the air by cooling it so that the moisture condenses and drips into the tank. … Read more