On a Qorvo PCB/module, pins labeled VDD, GND, and VPD are standard power/control connections, but each has a specific role: 1. VDD (Supply Voltage) 2. GND (Ground) 3. VPD (Power-Down…
The weather forecast for the forthcoming week in Lichfield is lots of cloud and rain. Even where episodes of sunshine break out, these will be brief, and rapidly give way…
On a headless Raspberry Pi, the simplest way is just via SSH and a couple of built-in Linux commands—no GUI needed. Quick & easiest (recommended) Run: You’ll get something like:…
Let’s troubleshoot this step by step—on a Raspberry Pi 4, Baobab can fail for a few common reasons. First: what exactly happens? When you try to run it: If you…
What you did should work in principle, but there are a couple of very common gotchas when cloning Raspberry Pi SD cards—especially when increasing size. Let’s go through the likely…
Here’s a proper comparison of your site against the main “benchmarks” in amateur radio astronomy, so you can see exactly where it sits. 🛰️ 1. Benchmark sites 🌍 Society of…
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…
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…
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: 💰…
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…
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