Introduction to using NanoVNA
Admin
Original Powerpoint file by myself downloadable from link below. https://www.astronomy.me.uk/wp-content/uploads/2025/07/NanoVNA_Hydrogen_Line_Basics.pptx
Muon detectors at LRO 7/7/2025
Consist of UKRAA Cosmic Watch coincidence pair and separate blue UKRAA Picomuon detector:
Masers at 22GHz
At 22 GHz, the most prominent masers are water (H₂O) masers, specifically: 🔹 Water (H₂O) Maser at 22.23508 GHz 🔍 Astrophysical Contexts Water masers at 22 GHz are found in…
ChatGPT advice on how to build receiver and antenna for water masers
To build a 22 GHz water maser receiver, you’ll be targeting the 22.23508 GHz emission line, which is in the K-band of the microwave spectrum. This is advanced but achievable…
For 1420 MHz (the hydrogen line), the best ferrite toroid material
For 1420 MHz (the hydrogen line), the best ferrite toroid material is not a typical low-frequency ferrite (like #43 or #61) — these are optimized for lower RF or broadband suppression.…
how to change user name on Linux Ubuntu
To change the username on Ubuntu, follow these steps carefully, as doing it incorrectly can cause login or permission issues. Here’s the safe way to do it from a terminal:…
What is GNU Radio
GNU Radio is an open-source toolkit for building software-defined radios (SDRs) and signal processing systems. It’s widely used by hobbyists, researchers, and professionals for real-time signal analysis, radio astronomy, satellite…
How to sort out problem if Ubuntu installer cannot see main C drive as boot device
Thanks, Andrew — that suggests the Ubuntu installer is currently only seeing your USB drive (e.g., SanDisk USB 3.2 Gen1) as a possible bootloader target, not your internal drive, which…
How to start Grafana dashboard on Linux MiniPC (LRO-PC-09) for my UKRAA Cosmic Watch muon detectors
How to log in remotely to GRAFANA and PGADMIN on Linux Cosmic Watch Muon MiniPC (LRO-PC-09)