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astronomy.me.uk The Website of Lichfield Radio Astronomy Observatory (LRO)

Astronomy observatory in Staffordshire, England.

astronomy.me.uk The Website of Lichfield Radio Astronomy Observatory (LRO)

Astronomy observatory in Staffordshire, England.

  • Live feeds at Lichfield Radio Observatory (LRO)
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Uncategorized

Why do some websites describe WR-650 waveguides as being for frequencies higher than 1420 MHz? Give equations in ASCII format.

Admin January 19, 2026 No Comments

Short answer: because different people are talking about different operating regions of the same waveguide, and some descriptions quietly assume single-mode, low-loss, well-matched operation rather than mere propagation. Here’s the…

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Confusion between WR-65 and WR-650 rectangular waveguides

Admin January 19, 2026 No Comments

Here’s the clarification you need: ✅ WR-650 is a real, standard rectangular waveguide ❌ WR-65 is not a standard rectangular waveguide designation How the naming works So the confusion boils…

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What does the 650 in WR650 waveguide name stand for?

Admin January 19, 2026 No Comments

WR-650 is the ideal rectangular waveguide for hydrogen line work. WR stands for Waveguide, Rectangular, and the number refers to the internal broad-wall dimension in hundredths of an inch. Specifically:…

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Converting a Python GNU Radio block into C++

Admin January 18, 2026 No Comments

Converting a Python GNU Radio block into C++ is very doable, but it’s not a mechanical translation — you’re moving from a runtime-defined block to a compiled, typed one that…

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Is there a way of outputting a choice of text on screen dependent on the value of a variable in GNU Radio?

Admin January 18, 2026 No Comments

Yes — there are several ways to show text on screen in GNU Radio based on the value of a variable, and the best method depends on where the variable…

Radio observation in hydrogen line (1420MHz)

Skin depth of antennas at 1420 MHz

Admin January 18, 2026 No Comments
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Can an effective hydrogen line cantenna be 3D-printed by painting conductive paint on plastic printing material with or without copper infusion?

Admin January 18, 2026 No Comments

Conductive paint on a plastic cantenna without copper infusion in the plastic printing material: Short answer: usually no — conductive paint on a plastic cantenna is very unlikely to give…

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Deep Space Exploration Society

Admin January 18, 2026 No Comments

http://dses.sciencehttps://www.youtube.com/@DeepSpaceExplorationSocietyDSES dish 5 miles south of Haswell Colorado, USA38.380857283744184, -103.15636966751099https://www.google.com/search?q=38.380857283744184%2C-103.15636966751099

Radio observation in hydrogen line (1420MHz)

Designing tuneable LRO aluminium stove pipe cantenna H-Line 16/1/2025

Admin January 16, 2026 1 Comment

Making tuneable length monopole to maximise cantenna waveguide function: As can be seen in photo below, I have purchased a threaded copper sleeve (sold as brass coupling nuts) and a…

ADVISORY NOTICE & DISCLAIMER

Please look at this important information about the content of this blog/website before reading further.

Admin January 14, 2026 No Comments

The information provided on this website is provided for reference purposes only, No warranty is provided for its use. You should check information provided with independent data sources before using…

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Recent Posts

  • What is the impedance of 1420 Mhz (1.42 GHz) [atomic neutral hydrogen line] dipole?
  • When I observe Milky Way in hydrogen, the centre of the galaxy has little hydrogen line emission. Why is that?
  • When I detect hydrogen with my radio telescope, is it coming from the optically bright spiral arms or the optically dark areas between them?
  • 1-4GHz Loop Feed fabrication (Alex Pettit)
  • Calculating the length of 1.4GHz Hydrogen Monopole Probe to use inside a cantenna

Recent Comments

  1. Yoshiyuki Takeyasu on What is a geodesic parabolic dish?
  2. Admin on What is a geodesic parabolic dish?
  3. Yoshiyuki Takeyasu on What is a geodesic parabolic dish?
  4. Stephen Arbogast on Designing tuneable LRO aluminium stove pipe cantenna H-Line 16/1/2025
  5. Yoshiyuki Takeyasu on What is a geodesic parabolic dish?

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You missed

Uncategorized

What is the impedance of 1420 Mhz (1.42 GHz) [atomic neutral hydrogen line] dipole?

Uncategorized

When I observe Milky Way in hydrogen, the centre of the galaxy has little hydrogen line emission. Why is that?

Uncategorized

When I detect hydrogen with my radio telescope, is it coming from the optically bright spiral arms or the optically dark areas between them?

Uncategorized

1-4GHz Loop Feed fabrication (Alex Pettit)

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Astronomy observatory in Staffordshire, England.

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