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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)
  • Calculators
  • Telescopes & Associated Equipment at Lichfield Radio Observatory
  • History and description of Lichfield Radio Observatory (LRO)
  • Publications & Presentations
  • Links to other observers’ SID monitoring sites
  • SHOOS – SARA Hydrogen-Observing Overall Survey
  • Contact me
GNU Radio

You can have two (or more) instances of the GNU Radio Companion QT GUI Vector Sink block in the same flowgraph

Admin October 26, 2025 No Comments

Yes — you can have two (or more) instances of the GNU Radio Companion QT GUI Vector Sink block in the same flowgraph, but there are a few practical considerations…

GNU Radio

GNU Radio does have blocks that can subtract streamed data in real time

Admin October 26, 2025 No Comments

GNU Radio does have blocks that can subtract streamed data in real time, though there isn’t a single block literally called “Subtraction”. You can achieve subtraction cleanly in a few…

GNU Radio

GNU Radio, the “Stream to Vector” block

Admin October 26, 2025 No Comments

In GNU Radio, the “Stream to Vector” block works with streamed sample data and groups it into fixed-length vectors. Here’s a clear breakdown of how it works: 📡 Input Type…

Muon Detection

How much uranium is it legal to own without licence in UK?

Admin October 26, 2025 No Comments

How much uranium is it legal to own without licence in UK? Short answer: there isn’t a simple mass limit — UK law controls radioactive activity (becquerels), not kilograms. Small…

Radio observation in hydrogen line (1420MHz)

What is return loss?

Admin October 26, 2025 No Comments

https://www.astronomy.me.uk/wp-content/uploads/2025/10/What-is-return-loss-261025-scaled.jpg

Jupiter Radio Astronomy

Mini-Circuits SLP-21.4+ Coaxial Low Pass Filter 50Ohm DC-22MHz Data Sheet

Admin October 26, 2025 No Comments

Download data sheet below: https://www.astronomy.me.uk/wp-content/uploads/2025/10/Mini-Circuits-SLP-21.4-Coaxial-Low-Pass-Filter-50Ohm-DC-22MHz-Data-Sheet-261025.pdf

Jupiter Radio Astronomy

Was the Orionid meteor shower a flop this year?

Admin October 25, 2025 No Comments

The Orionid meteor shower is described by the Royal Museums Greenwich, London, website as: Orionids 22 October 2 Oct-7 Nov 15 Fast with fine trains. Associated with Comet Halley (https://www.rmg.co.uk/stories/space-astronomy/meteor-shower-guide-2025…

Easy Radio Astronomy Software (ezRA) GNU Radio SDRplay RSPduo Software-Defined Radio (SDR)

New revised SDRplay version 23/10/2025 of Ted’s original ezRA GNU Radio Data Collection Script from 20/10/2025

Admin October 23, 2025 No Comments

https://www.astronomy.me.uk/wp-content/uploads/2025/10/Ted-Clines-original-GNU-Radio-ezRA-GRC-script-201025ezColGR251018eArevised-AT-231025.zip https://www.astronomy.me.uk/wp-content/uploads/2025/10/Ted-Cline-GNU-Radio-SDRplay-AT-revisions-231025.zip

LRO-H2 Radio Telescope (150cm Solar Cooker Dish) SDRplay RSPduo Software-Defined Radio (SDR)

Data files from LRO-H2 created using draft SDRplay GNU Radio Software and SDRplay RSPduo SDR 21-23/10/2025

Admin October 23, 2025 No Comments

Unfortunately, these do not seem to be able to be processed in ezRA. GRC file used for data collection below (GNU Radio Companion File): https://www.astronomy.me.uk/wp-content/uploads/2025/10/ezColGR251018eA-AT201025@2240.zip Data Files created by above…

Easy Radio Astronomy Software (ezRA) GNU Radio

Protected: New Beta GNU Radio script to generate ezRA .txt data files that can be processed in ezRA

Admin October 20, 2025 No Comments

There is no excerpt because this is a protected post.

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Categories

  • ADVISORY NOTICE & DISCLAIMER
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  • LRO-H1 Radio Telescope (86cm x 86cm Ptarmigan Triffid 4×4 Dipole Array)
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  • Solar Cooker 1.5m Parabolic Dish Radio Telescope
  • Spectroscopy
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  • The 20 Metre Skynet Radio Dish at Green Bank Observatory
  • Uncategorized
  • USRP B210 Software-Defined Radio
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  • VLF Radio Detection of SIDs (Very low Frequency detection of Sudden Ionospheric Disturbances)
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Recent Posts

  • What torque is required on drive to move 150cm dish?
  • Wind damage to LRO-H3
  • Online interdigital RF cavity filter designer
  • Alex Pettit’s new RFI removal regime in H-Line 3D
  • Tell me what a SID (Sudden Ionospheric Disturbance) is and what range of frequencies are covered when monitoring for SIDs.

Recent Comments

  1. Admin on Signal attenuation (loss) for common coaxial cables at around 1.42 GHz (1420 MHz), relevant for builders of amateur Hydrogen Line radio telescopes.
  2. Alex Pettit on How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance?
  3. Alex Pettit on How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance?
  4. Bill S.N. on How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance?
  5. Stephen Arbogast on How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance?

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You missed

Uncategorized

What torque is required on drive to move 150cm dish?

Uncategorized

Wind damage to LRO-H3

Uncategorized

Online interdigital RF cavity filter designer

Uncategorized

Alex Pettit’s new RFI removal regime in H-Line 3D

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

Astronomy observatory in Staffordshire, England.

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