Is a NanoVNA a spectrum analyser?
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No, a NanoVNA is not a spectrum analyser, although the two instruments are related and can complement each other. For amateur radio astronomy, they serve quite different purposes. 1. NanoVNA…
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Is it possible to compile a GNU Radio flowgraph into a stand alone application?
Yes, there are a few routes, depending on what “stand alone” means for you. 1. Generate Python and run it outside GRC (easiest)In GNU Radio Companion, hit Generate (F5). It…
What is frequency does Sky satellite dishes in the UK send down to receiver?
A UK Sky satellite dish receives signals at approximately 10.7–12.75 GHz, but the LNB (Low Noise Block downconverter) on the dish converts these to much lower frequencies before sending them…
ARAS Live Observatory hydrogen line page
https://arasobservatory.org/live?instrument=hydrogen#hydrogen
Testing the two 5650A rubidium time sources I have purchased from AliExpress by comparing them to Leo Bodnar GPSDO on 9 October 2026, with the two 5650A devices attached to a large aluminium heat sink.
. Results of testing the first 5650A rubidium device: Turning the device on and monitoring it for first 54 minutes: https://files.ad.thornett.net/astronet/Testing-first-5650A-101126@1753-1847-without-sound.mp4 After approx further 90 mins to allow stabilisation: https://files.ad.thornett.net/astronet/Testing-first-5650A-101126@2038-2114-without-sound.mp4…
Independently Testing each of the two KrakenRF Discovery Dishes & Discovery Hydrogen Line feeds at LRO used for interferometry 6-9 October 2026
Testing the LEFT dish and feed on interferometer – drift scan over 24 hours+: https://www.astronomy.me.uk/wp-content/uploads/2026/10/Data-Collection-ezCol-Left-Discovery-Dish-Discovery-H-Line-feed-08-091026.mp4 Testing the RIGHT dish and feed on interferometer – drift scan over 24 hours: https://www.astronomy.me.uk/wp-content/uploads/2026/10/Data-Collection-ezCol-Right-Discovery-Dish-Discovery-H-Line-feed-05-061026.mp4…
Digital inclinometers for radio astronomy dishes
DIGITAL INCLINOMETERS FOR RADIO TELESCOPE DISH Yes – a digital inclinometer can measure the actual vertical inclination/elevation of a radio telescope dish. Most handheld digital angle gauges contain a MEMS…
Can muons be focused?
FOCUSING AND DEFLECTING COSMIC-RAY MUONS Yes, muons can in principle be focused or redirected into a smaller area, because muons are electrically charged particles. However, cosmic-ray muons are relatively energetic…
The Solar dish at Sherwood Observatory in Sutton-in-Ashfield
Yes — the Sherwood Observatory solar radio dish you mean operates at about 2.8 GHz (2800 MHz), not 12 GHz. At 2.8 GHz, the wavelength is about 10.7 cm, which…
How can muons have different energies?
Cosmic-ray muons reaching the ground have a very broad range of energies. Most atmospheric muons are produced when high-energy cosmic rays strike nuclei in the upper atmosphere, creating pions and…