Notes on SETI-style “Horn of Plenty” horn antenna tuned to H-Line
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https://www.astronomy.me.uk/wp-content/uploads/2026/01/Notes-on-SETI-style-Horn-of-Plenty-horn-antenna-tuned-to-H-Line.pdf
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Designing my SETI H-Line Horn of Plenty 31/12/2025
From SETI League on building Horn of Plenty: https://www.astronomy.me.uk/wp-content/uploads/2026/01/10629-scaled.jpg https://www.astronomy.me.uk/wp-content/uploads/2026/01/Building-SETI-Horn-of-Plenty2003.docx SETI League Feedhorn Excel Spreadsheet Calculator: https://www.astronomy.me.uk/wp-content/uploads/2026/01/SETI-League-Feedhorn-Analysis-Excel-Calulator.xls Design for my own Horn of Plenty using diagrams and photos from SETI…
Calculating Cantenna Dimensions Talk for BAA Hydrogen Line Sub0group meeting 5/1/2026
https://www.astronomy.me.uk/wp-content/uploads/2025/12/Calculating-Cantenna-Dimensions-for-H-Line-Meeting-050126-DRAFT-301225@2330.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/12/Calculating-Cantenna-Dimensions-for-H-Line-Meeting-050126-DRAFT-301225@2330.pptx
Testing antenna aimed at cold sky vs hot ground – can this be conducted in daytime or must it be done at night?
QUESTION:Testing antenna aimed at cold sky vs hot ground – can this be conducted in daytime or must it be done at night i.e. does sunshine or even sun behind…
Recording of data collection on LRO-H2 (Solar Cooker Radio Telescope) 28/12/2025
https://files.ad.thornett.net/astronet/LRO-H2_Monopole2_33_281225@1209.mp4
Linear power supply purchased Amazon for SAWBird H1 LNA 29/12/2025
The idea here is to reduce variations in LNA performance as power spikes up and down in power supplies by using a linear power supply.
My own attempt at completing homework exercises from BAA GNU Radio Group Meeting 29/11/2025: Create an electronic keyboard which plays multiple music chords, and create an AM radio player
My GNU Radio Companion GRC file that plays multiple music chords: https://www.astronomy.me.uk/wp-content/uploads/2025/12/BAA-GNU-Radio-Meeting-Exercise-Chord-Selector-201225_GRC.zip Video showing the above GRC in action: My AM radio player (users can select from recorded IQ file…
Mathematical relationship between chords in music (for BAA GNU Radio Meeting homework)
To change a C major chord into a D major chord, you need to multiply the frequency of each note by (2^{2/12}) (the twelfth root of two raised to the…
Physicists Finally Confirm the Existence of “Time Mirrors”
Summary of research article (Moussa et al., 2023): The following was published on December 26, 2025 in https://dailygalaxy.com/2025/12/physicists-prove-time-mirrors-real-with-electromagnetic-flip/ Physicists have experimentally reversed electromagnetic waves in time. The process, known as…