United Kingdom (UK) Military Radio Bands III, IV and V
In the UK, Military Band III typically covers the frequency range of 225 MHz to 400 MHz. This band is primarily
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astronomy.network The Website of Lichfield Radio Observatory (LRO)
Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net
Online calculator for determining radial velocities relative to local standard of rest
The following link goes to such a calculator (this link works as of 23 February 2025): https://www.gb.nrao.edu/GBT/setups/radvelcalc.html Further discussion on
Read moreHow electrically conductive is aluminium and zinc spray paint
I asked this question to ChatGPT today, which gave following answer: Aluminium and zinc spray paints contain fine metal particles
Read moreAll my articles published in the Journal of the Society of Amateur Radio Astronomy between 1 November 2024 and 22 February 2025.
Click on links below to download PDF versions of these articles: https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-3-days-LRO-data-with-ezCon250124b-script-Rinearn3D-FINAL-270125@2300-revised-150225@2000-2.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-Integration-Times-ezCol-FINAL-280125-revised-150225@2000-2.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-on-2-WTMicrowave-Cavity-Filters-FINAL-revised-150225@2000-2.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-on-1420-1427MHz-Chinese-Cavity-Filter-Andrew-Thornett-J-SARA-Nov-Dec-2024-2.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-on-2500-hour-LRO-Milky-Way-hydrogen-map-060124-161124-Andrew-Thornett-J-SARA-Nov-Dec-2024-2.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-on-Mapping-Milky-Way-arms-in-3-spatial-dimensions-Andrew-Thornett-J-SARA-Jan-Feb-FINAL-120125@2200-revised-150225@2000-2.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-on-mapping-Milky-Way-data-to-sphere-Andrew-Thornett-J-SARA-Jan-Feb-FINAL-130125@2200-revised-150225@2000-2.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-on-simple-weather-resistant-housing-Nooelec-SAWBird-H1-LNA-130125@2200-revised-1502225@2000-2.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/02/SARA-Journal-article-on-Solar-Cooker-Dish-RT-Andrew-Thornett-J-SARA-Nov-Dec-2024-2.pdf
Read morePlotting 3D images with Rinearn3D using Ted Cline’s new ezGal250218e.py script 19/2/2025 to generate Rinearn3D mesh CSV data file from all viable ezRA NPZ and EZB data files 060124-011124
The ezGal510 plot needs a lot of data to fill, so it is hard to avoid data gaps. The plots
Read moreGround Waves and Sky Waves in Sudden Ionospheric Disturbances (SIDs)
From John at SARA Feb 2025: Hello, The signals that we receive consist of a ground wave and
Read moreFirst attempt at plotting 3D images using Rinearn3D using Ted Cline’s new ezGal250218e.py script 19/2/2025
The ezGal510 plot needs a lot of data to fill, so it is hard to avoid data gaps. The purpose
Read moreInitial data analysis from third Milky Way mapping exercise with LRO-H1 & LRO-H2 – 15/2/2025.
So far, only 4 elevations on both radio telescopes. Difference between this data and previous data is that each data
Read moreSKAO Making Hydrogen Line (1420.405 MHz) Radio Telescopes from readily available household materials, seen at Astrofest 6 Feb 2025
I was very impressed with this very well developed project presented by SKAO on their stand at European Astrofest February
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