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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.

Admin October 10, 2026 No Comments

. 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…

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Independently Testing each of the two KrakenRF Discovery Dishes & Discovery Hydrogen Line feeds at LRO used for interferometry 6-9 October 2026

Admin October 9, 2026 No Comments

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…

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Digital inclinometers for radio astronomy dishes

Admin October 3, 2026 No Comments

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…

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Can muons be focused?

Admin October 3, 2026 No Comments

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…

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The Solar dish at Sherwood Observatory in Sutton-in-Ashfield

Admin October 3, 2026 No Comments

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…

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How can muons have different energies?

Admin October 2, 2026 No Comments

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…

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Assessment of the two ex-telecommunication 5650A rubidium time standards purchased from same seller on AliExpress

Admin October 1, 2026 No Comments

Thank you for sending both the two rubidium 5650A time sources I have purchased from you. The second one is good = 340 seconds avg. and I then get a…

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Why did Viking landers cost $100 million to build vs others that cost $10 million?

Admin October 1, 2026 No Comments

If by “other landers” you mean later Mars spacecraft such as Mars Pathfinder, the apparent roughly $100 million versus $10 million difference for particular components/subsystems is largely because Viking was…

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KrakenRF Discovery Dish Solar Continuum and Interferometry System Validation 30 September 2026

Admin September 30, 2026 No Comments

https://www.astronomy.me.uk/wp-content/uploads/2026/09/Discovery_Dish_Solar_Continuum_and_Interferometry_System_Validation_30_Sep_2026_Paper_FINAL-sent-to-Brian-Rouke-300926@2100.pdf

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Comparing second 5650A rubidium time source from AliExpress at LRO with Leo Bodnar LBE-1421 GPS-disciplined time source 30/9/2026

Admin September 30, 2026 No Comments

I now have 2nd one of these – video comparing it to Leo Bodnar 1421 GPS disciplined time source can be downloaded at: https://files.ad.thornett.net/astronet/Testing2ndRubidium5650A300926@1228-edited.mp4 Quite big file – 8 GB…

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