How to add a shortcut to a folder on Linux Ubuntu Desktop
Admin
You can add a folder shortcut to the Ubuntu desktop by holding down Ctrl + Shift while dragging the folder from the file manager to your desktop. Alternatively, you can…
November 2025
How to close Snap Store Apps to allow SNAP to update in Linux Ubuntu
To update a snap app, first completely close the app by using killall in the terminal. Then, use sudo snap refresh to update all snaps, or sudo snap refresh to…
GNC Flowcharts from Brett for USRP B210 SDR & Video Training links for GNC (GNU Radio Companion)
Hi Andy, https://www.astronomy.me.uk/wp-content/uploads/2025/11/B210_stats.grc_.txt https://www.astronomy.me.uk/wp-content/uploads/2025/11/baa_seminar_USRP_IF_RF.grc_.txt The BAA seminar flowgraph won’t work without some further modules (created by Marcus Leech). I can explain this to you. The B210 fg is what I…
What does following product do? RFandEMF TM-195: 3 Axis High Frequency/RF Measurement, EMF Meter covers 50MHz – 3.5GHz
Here’s what does — and when/how you might use it: ✅ What the device does 🔎 Typical Uses / Why People Use It This kind of RF/EMF meter is commonly…
How to avoid audio clashes GNU Radio with other devices using the audio stream on the computer running the software
I was using a screen recorder (Debut) to record a Microsoft Teams meeting tonight. However second half lost its sound, which occurred after I ran a GNU Radio Companion script…
How to back up an entire Linux Ubuntu system 29/11/2025
https://www.astronomy.me.uk/wp-content/uploads/2025/11/How-to-back-up-entire-Ubuntu-system-291125.docx https://www.astronomy.me.uk/wp-content/uploads/2025/11/How-to-back-up-entire-Ubuntu-system-291125.pdf How to back up entire Ubuntu system (content of downloadable versions above repeated below in this post): From https://askubuntu.com/questions/7809/how-to-back-up-my-entire-system 29/11/2025 Refer to this howto: http://ubuntuforums.org/showthread.php?t=35087 FILES In simple…
Dave Bracey’s Hydrogen Line 3D modelling of Milky Way arms
From Dave’s brilliant data set suppled 27/11/2025 – (c) Dave Bracey 2025 – all rights reserved. Taken using Dave’s 150cm homemade backyard radio telescope in Bromyard, England, UK, 2025.
When copper-wire properties start to matter in RF circuits
✅ When copper-wire properties start to matter. 1. Inductance becomes noticeable around ~10 kHz and up A typical straight copper wire has about: Inductive reactance: Example for L = 1…
How an inductor works
An inductor is one of the simplest components in electronics, but its behaviour comes from a deep physical effect: a current creates a magnetic field, and changing that current induces…
How resonant radio frequency circuits work
How Resonant RF Circuits Work: Resonant RF (radio-frequency) circuits—also called LC resonant or tuned circuits—use an inductor (L) and a capacitor (C) to create a natural oscillation at a specific…