Mini-Circuits BFCN-1900+ Ceramic Bandpass Filter 1893-1920 MHz
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https://www.astronomy.me.uk/wp-content/uploads/2026/02/BFCN-1900_dashboard.pdf
Maths Ted uses to calculate galactic velocity in ezRA
Maybe your answer is explained at about https://www.youtube.com/watch?v=YXuPDJVRbd0&t=1892sor maybe starting back at https://www.youtube.com/watch?v=YXuPDJVRbd0&t=1083swhere I explain the tangential velocity method.The radius from the Galactic Center to the tangential gas cloud is…
Radio Meteor Scatter – Improved Spectrum Lab Conditional Actions V8 from Blackwater Skies
https://www.blackwaterskies.co.uk/2021/03/radio-meteor-scatter-conditional-actions_v8/
How can I regularly upload a file from a folder onto my website every four hours?
To upload a file from a folder to your website automatically every four hours, you need two parts: Below are the most practical methods depending on your setup. ✅ Option…
Outlook has blocked a .py attachment on email so I can’t access it. Can I unblock it?
Yes — but whether you can unblock it depends on which Outlook you’re using and where the block is happening. Outlook blocks .py files because they’re considered executable and potentially…
Is the speed of light a real speed?
Yes — the speed of light is a real, physically measurable speed. The quantity usually denoted c is the speed at which electromagnetic waves propagate through a vacuum. Its defined…
Product Review: Mini Circuits ZVBP-1420-N+ Cavity Band Pass Filter, 1415 – 1425 MHz.
Compared to the GPIO filters discussed in another article in this issue, Mini-Circuits’ 1415-1425 MHz cavity filters are at a significantly higher price point (around $700 at the time of…
The current range of 1420 MHz Hydrogen Line Filters and Low Noise Amplifiers supplied by GPIO.
Dr Andrew ThornettLichfield Radio Observatory – www.astronomy.me.uk GPIO Labs produces a selection of filters and low-noise amplifiers designed specifically for observations of the neutral hydrogen spectral line at 1420 MHz.…
Setting up LRO 134cm VLF Aerial with direct input into USB Sound Card (except for 10 uF capacitor on one arm of input) on LRO-PC-10 mini-PC with Spectrum Lab software for continuous monitoring starting 21/2/26@18:00 UTC
Working configuration file on Spectrum Lab Software: https://www.astronomy.me.uk/wp-content/uploads/2026/02/LRO_VLF_Config_works-with-134cm-aerial-LRO-PC-10-210226@1800.zip Plot from Spectrum Lab showing the 5 stations being monitored & photo of the 134cm VLF aerial:
First Light LRO 134cm VLF Aerial with Direct Sound Card Audio Input (10 uF capacitor on one arm) 20-21/2/2026
I am grateful to the help of John Berman on this project – I based the arrangement at LRO on his design. It uses Spectrum Lab Spectrum Analyser software, and…