VLF Radio Detection of SIDs (Very low Frequency detection of Sudden Ionospheric Disturbances)
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Assessment of using an USB splitter to power my Raspberry PI at same time as SuperSID?
When querying ChatGPT on the viability of connecting an USB splitter cable from a DC-DC 12V-5V converter to supply a Raspberry Pi ZERO 2W and SuperSID preamp, ChatGPT gave this…
Initial Positive Data 134cm VLF Aerial with direct input into USB Soundcard LRO 25/2/2026
https://www.astronomy.me.uk/wp-content/uploads/2026/02/Initial-Positive-Data-134cm-VLF-Aerial-with-direct-input-into-USB-Soundcard-LRO-250226.pdf
Setting up LRO 134cm VLF Aerial with direct input into USB Sound Card (except for 10 uF capacitor on one arm of input) on LRO-PC-10 mini-PC with Spectrum Lab software for continuous monitoring starting 21/2/26@18:00 UTC
Working configuration file on Spectrum Lab Software: https://www.astronomy.me.uk/wp-content/uploads/2026/02/LRO_VLF_Config_works-with-134cm-aerial-LRO-PC-10-210226@1800.zip Plot from Spectrum Lab showing the 5 stations being monitored & photo of the 134cm VLF aerial:
First Light LRO 134cm VLF Aerial with Direct Sound Card Audio Input (10 uF capacitor on one arm) 20-21/2/2026
I am grateful to the help of John Berman on this project – I based the arrangement at LRO on his design. It uses Spectrum Lab Spectrum Analyser software, and…
I am making VLF aerial out of 22 SWG enamelled copper wire about 150m long, wound around a wooden cross multiple times. How important is exactly length of the wire?
For a VLF receiving loop, the exact wire length is usually far less critical than people expect. At VLF (about 3–30 kHz): So you are not building a resonant half-wave…
Success using direct USB audio soundcard input from VLF aerial (with serial 10 uF capacitor) at LRO 20/2/2026 @ 21:20 UTC
Success with detection! Bits and pieces arrived to make new aerial – and attached are test screenshots from Spectrum Lab – 6 stations seen clearly. This time, for some reason,…
How big is the area of a cosmic ray burst is at ground level?
This question is relevant to considering how close two observers need to be to each other in order to observe the same muon cascades, and hence obtain similar muon detections/have…
Spectrum Lab spectrum analyser software when I update the horizontal speed settings on the plotter it does not change the speed on the plot
If the horizontal speed in Spectrum Lab isn’t changing on the scrolling plot, it’s usually because the display timing is controlled somewhere else. In Spectrum Lab, the time axis speed…