Presentation for meeting: https://www.astronomy.me.uk/wp-content/uploads/2026/01/Talk-Demo-BAA-GNU-Radio-Meeting-DRAFT-260126@2300.pdf Andrew Sutowski’s attempt to answer homework from last meeting: My own attempts to answer homework from last meeting: Exercise: Create your own AM radio: https://www.astronomy.me.uk/wp-content/uploads/2026/01/BAA-GNU-Radio-Meeting-Exercise-AM-Radio-201225.zip Exercise:…
Is there push button block in GNU Radio Companion? Yep — there is 👍 In GNU Radio (QT GUI) you’ve got a couple of button-style options, depending on what behavior…
Same frequency, physically bigger horn — not frequency scaling.This is where horns stop being “just scaled” and start being designed. Short answer first:You increase the aperture size, but you do…
Short answer: it scales linearly with wavelength.Longer answer (the bit you actually care about 🙂): For a hydrogen-line horn (≈1420 MHz, λ ≈ 21 cm), the flare geometry is set…
Following is result of asking ChatGPT the above question 27/1/2026!!!! Here’s a source that actually describes the original SETI Horn of Plenty antenna design and its dimensions: 🔗 SETI League…
These are both relatively long integration times on the Intel i5 MiniPC used for this experiment. The numbers are not equivalent – in both cases I attempted to obtain an…
Screenshot: Data Collection Videos: Data Files: https://www.astronomy.me.uk/wp-content/uploads/2026/01/LRO-H2_ezColGR260104GR_260123_13.txt https://www.astronomy.me.uk/wp-content/uploads/2026/01/LRO-H2_ezColGR260104GR_260123_14.txt https://www.astronomy.me.uk/wp-content/uploads/2026/01/LRO-H2_ezColGR260104GR_260124_00.txt
Short answer: it increases by a factor of 4. Here’s why (under the usual physics assumptions): So if the object shrinks to half it’s size: To keep constant: Angular momentum…
It is often stated that pulsar timings are very stable and hence used as a cosmic clock by astronomers. Yet, on a live demonstration at Dwingaloo Observatory in Netherlands tonight,…
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