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

Astronomy observatory in Staffordshire, England.

  • Calculators
  • Contact me
  • Equipment List at Lichfield Radio Observatory
  • Grafana Dashboard Cosmic Watch Detectors
  • History and description of Lichfield Radio Observatory (LRO)
  • Links to other SID monitoring sites
  • Live data from UKRAA Sudden Ionospheric Disturbance Monitor at LRO (SIDs)
  • Live feed from SuperSID monitor
  • Live feed from UKRAA CosmicWatch Muon Detectors
  • Live feed from UKRAA Magnetometer
  • Live feed from UKRAA PicoMuon Muon Detector
  • Live feeds at Lichfield Radio Observatory (LRO)
  • Live Radio meteor observations and meteor counts
  • Live stream from 1420MHz hydrogen-line 86cm Ptarmigan Triffid Dipole Array
  • Privacy Policy
  • Publications & Presentations
  • SHOOS - SARA Hydrogen-Observing Overall Survey

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

Astronomy observatory in Staffordshire, England.

  • Calculators
  • Contact me
  • Equipment List at Lichfield Radio Observatory
  • Grafana Dashboard Cosmic Watch Detectors
  • History and description of Lichfield Radio Observatory (LRO)
  • Links to other SID monitoring sites
  • Live data from UKRAA Sudden Ionospheric Disturbance Monitor at LRO (SIDs)
  • Live feed from SuperSID monitor
  • Live feed from UKRAA CosmicWatch Muon Detectors
  • Live feed from UKRAA Magnetometer
  • Live feed from UKRAA PicoMuon Muon Detector
  • Live feeds at Lichfield Radio Observatory (LRO)
  • Live Radio meteor observations and meteor counts
  • Live stream from 1420MHz hydrogen-line 86cm Ptarmigan Triffid Dipole Array
  • Privacy Policy
  • Publications & Presentations
  • SHOOS - SARA Hydrogen-Observing Overall Survey
Radio observation in hydrogen line (1420MHz)
November 30, 2025 Admin

What does following product do? RFandEMF TM-195: 3 Axis High Frequency/RF Measurement, EMF Meter covers 50MHz – 3.5GHz

Here’s what does — and when/how you might use it: ✅ What the device does 🔎 Typical Uses / Why

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GNU Radio
November 29, 2025 Admin

How to avoid audio clashes GNU Radio with other devices using the audio stream on the computer running the software

I was using a screen recorder (Debut) to record a Microsoft Teams meeting tonight. However second half lost its sound,

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Linux for Radio Astronomy
November 29, 2025 Admin

How to back up an entire Linux Ubuntu system 29/11/2025

https://www.astronomy.me.uk/wp-content/uploads/2025/11/How-to-back-up-entire-Ubuntu-system-291125.docx https://www.astronomy.me.uk/wp-content/uploads/2025/11/How-to-back-up-entire-Ubuntu-system-291125.pdf How to back up entire Ubuntu system (content of downloadable versions above repeated below in this post): From

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Radio observation in hydrogen line (1420MHz)
November 28, 2025 Admin

Dave Bracey’s Hydrogen Line 3D modelling of Milky Way arms

From Dave’s brilliant data set suppled 27/11/2025 – (c) Dave Bracey 2025 – all rights reserved. Taken using Dave’s 150cm

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Uncategorized
November 27, 2025 Admin

When copper-wire properties start to matter in RF circuits

✅ When copper-wire properties start to matter. 1. Inductance becomes noticeable around ~10 kHz and up A typical straight copper

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Uncategorized
November 27, 2025 Admin

How an inductor works

An inductor is one of the simplest components in electronics, but its behaviour comes from a deep physical effect: a

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Uncategorized
November 27, 2025 Admin

How resonant radio frequency circuits work

How Resonant RF Circuits Work: Resonant RF (radio-frequency) circuits—also called LC resonant or tuned circuits—use an inductor (L) and a capacitor

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Radio observation in hydrogen line (1420MHz)
November 26, 2025 Admin

How does the radio frequency SAW filter in a Nooelec SAWBird LNA and filter?

In the SAWBird line of LNAs (e.g., for 1420 MHz, GPS, L-band), the SAW filter is the component that provides the ultra-narrow

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Radio observation in hydrogen line (1420MHz)
November 26, 2025 Admin

What is spillover vs ground reflection in radio astronomy?

In a radio telescope’s noise budget, spillover and ground reflection are two distinct ways unwanted radiation enters your receiver. They’re related but

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Linux for Radio Astronomy
November 26, 2025 Admin

How to generate a disc image from my Raspberry PI 4B?

You can get a Raspberry Pi disk image in a few different ways depending on what you mean: 1. Downloading

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Recent Posts

  • Physicists Finally Confirm the Existence of “Time Mirrors”
  • How to use directional coupler to provide reference signal in Easy Radio Astronomy software (suggestions by ChatGPT 27/12/2025)
  • Using directional couplers to provide reference signals for hydrogen line radio astronomy
  • Screen shielding fabrication to reduce RFI:
  • RF Reference Signals using very low insertion loss 20+ dB isolation directional couplers fed with an active noise source of known noise power and spectral characteristics.

Recent Comments

  1. Admin on What is a geodesic parabolic dish?
  2. Wolfgang Hermann on Is 145mm or 165mm better diameter for hydrogen line cantenna? Is a can that is 160mm diameter x 165 mm height a good choice for this?
  3. Wolfgang Hermann on Is 145mm or 165mm better diameter for hydrogen line cantenna? Is a can that is 160mm diameter x 165 mm height a good choice for this?
  4. Yoshi Takeyasu on What is a geodesic parabolic dish?
  5. Adrian Clausall on Julian Palmer Design Monopole Probe Assembly for Cantenna 12/12/2025

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