For 150cm diameter dish, I would expect significantly better peaks than is seen in this video from last few days. https://www.astronomy.me.uk/wp-content/uploads/2026/06/LRO-H2_DataCollect_Monopole1_2026-05-27-16-05.avi Andy
Nooelec’s main RTL-SDR receiver families are: Here are Nooelec’s commonly sold software-defined radio (SDR) models and product lines (consumer/ham/RTL-based and more advanced units): Notes: For exact current model names, specifications,…
https://github.com/ericgibert/supersid
I have not been able to check the following method – so cannot guarantee that it works, nor that it won’t damage your device. If my SDR does not dry…
For a dish: F = (F/D) x D where: F = focal length (support length) F/D = focal ratio D = dish diameter Example for a 1.0 m dish: +———–+—————-+…
Yes—if you mean isotropic radiator, then an ideal, non-rotating black hole is about as close as nature gets to one. An isotropic radiator emits the same power in every direction.…
For 1420 MHz work, the advantage of a professionally manufactured WR-650 waveguide is usually much smaller than many people expect. Electrical performance A commercial WR-650 section will have: At 1420…
You are probably thinking of Louis Slotin. On 21 May 1946 at Los Alamos Laboratory, Slotin was demonstrating a criticality experiment using a plutonium core later nicknamed the “Demon Core.”…
Yes, 93,000 counts per minute (CPM) is a fairly strong reading for a Geiger test source, although how “large” it is depends on the detector and the source geometry. For…
I asked ChatGPT to explain following to me: From https://newatlas.com/telecommunications/flat-rooftop-satellite-antennas/ “Ground Control to Major Tom,” the evergreen lyrics to David Bowie’s 70s hit, Space Oddity. What’s odd is that, despite…
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