If by “shark-fin patterns” you mean the characteristic sharp rise/slow fall (or the reverse) seen in VLF SID recordings during a solar flare, the reason some observers see the fin…
This is used communications hardware. Hand-written on cardboard box is 10 MHz. THE FOLKOWING COMES FROM AN ANALYSIS OF THE PHOTOS ABOVE BY CHATGPT, AND REQUIRES CONFIRMATION EXPERIMENTALLY: You have…
From Alex (originally posted on SARA Mailing list 22/8/2026): Observe the relative Signal Strengths & Signal/Noise of each: These 3 hour drift scan data sets were acquired using 300 second…
Alex many thanks. Wow — seeing the actual copper patterns on the other side of the board completely changes the picture. This isn’t a simple folded‑dipole board at all; it’s…
You have the Nooelec Dish .. I’d use that. Remove the nooelec Dipole & cut down the square tube and use it to hold the Discovery Feed. ( you can…
FIRST POSTED BY PAUL HEARN ON MUONDETECTOR FORUM AUGUST 2026: ‘what’s the point’, but more ‘how does it move beyond the local user’s analysis and, where participants choose to do…
This feed has been shown to be very effective by Alex Pettit (see SARA mailing list). Why is it so good? FROM ADRIAN KLAUSSEL, FIRST PUBLISHED ON THE SARA MAILING…
The link below downloads ZIP file of Royston Morgan’s presentation and associated materials from his talk at the BAA Muon online meeting 17/8/2026: https://www.astronomy.me.uk/wp-content/uploads/2026/08/Royston-Morgan-Materials-his-talk-BAA-Muon-meeting-170826.zip
You can feed a 1420 MHz hydrogen-line horn from the rear panel, but a straight monopole pointing forward down the horn axis would generally be a poor arrangement. The key…
For the 22 GHz water maser (H₂O) line, the laboratory rest frequency is approximately: 22.23508 GHz = 22,235.08 MHz Astronomical maser emission is Doppler shifted by the motion of the…
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