When I talk about “flattening the baseline,” I am talking about trying to remove a slow trend or curvature from my data. “2nd order” refers to a second-order polynomial—basically a…
In GNU Radio, “2nd order baseline flattening” isn’t a single built-in block—you implement it by estimating a quadratic trend and subtracting it from your signal. Here are the practical ways…
This data was collected using ezCol (Ted Cline’s ezRA suite of software). The dish is sold as a solar cooker for use on camping trips. It makes an effective hydrogen…
https://www.astronomy.me.uk/wp-content/uploads/2026/04/Nooelec-LANA-Wideband-Low-Noise-Amplifier-Product-Specification-Sheet-Mar-2025.pdf The Nooelec LaNA is a wideband low-noise amplifier used with SDR systems. Here are the key specifications in a clear summary: 📡 Nooelec LaNA (Wideband version) specifications Frequency range…
https://youtu.be/D4ehWmEBhAE?si=U40XxTs1g43DUv4U
For a high-altitude weather balloon, the cost of helium depends heavily on volume (m³) and whether you buy party-grade cylinders vs industrial gas. Here’s a realistic UK/Europe 2025–2026 picture: 💰…
The observations from the balloon flight can be understood in terms of how muons are both produced and lost as cosmic radiation passes through the atmosphere. When high-energy cosmic rays…
There are quite a few liquid cooling / temperature-controlled systems on eBay and similar marketplaces, ranging from simple DIY Peltier units to proper compressor-based chillers. Below are the most relevant…
On a Raspberry Pi (running Raspberry Pi OS or most Linux distros), you can reboot from the terminal with: Alternatives Notes
The supports now can be altered in length to optimise focal position.
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