Short answer: yes—two-core plastic-coated cable (e.g., speaker twin, figure-8) works fine for a VLF loop wound on a wooden cross. Here’s how to make it work well: So yes: two-core…
To change a username in Ubuntu cleanly and safely, follow these steps from a different admin account (not the one you’re renaming) — or from a root shell. ⚠️ Important:…
From SARA meeting 19/10/2025: Eduard Mol: Just found Joachim Köppens planet observations at 10 GHz, I believe he used a 7.2 metre dish: http://sat-bodenstation-roenne.uni-kiel.de/. Jupiter was only 0.015 dB! Saturn…
Hi Andrew — good to see your interest in Linux astro-control setups (especially given your radio astronomy background!). For a Sky‑Watcher mount (SynScan-based) under Linux, here’s a breakdown of what…
Compare RSP1 RSP2 RSPDuo HackRF PlutoSDR USRP. Here’s a practical, spec-level compare of the popular SDRs you named, with notes for radio astronomy / interferometry use. Device RX freq. range…
https://www.astronomy.me.uk/wp-content/uploads/2025/10/DSES251016_10.txt Not worked! This first attempt to generate GNU Radio Companion GRC script with SDRplay RSPduo SDR which creates data files in ezRA’s ezCol.py .txt format does not appear to…
Generally, the bigger the better within practical limits. Consider its orientation (N-S or E-W), where it will be located, will it be moved, will the mount support the weight of…
Building a horn antenna tuned for the 21 cm (1420.405 MHz) hydrogen line is a popular and effective way to do amateur radio astronomy. A horn antenna is especially good…
I asked ChatGPT how to do this, and here is its suggestion:
WR-650 already covers 1.12–1.70 GHz, so 1.420 GHz sits comfortably in-band—you don’t need to resize the guide. What you do need is a simple, well-tuned coax-to-waveguide probe with a backshort…
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