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EUCARA25 Save the date.....
We are pleased to announce the date of the 2025 EU Conference on Amateur Radio Astronomy (EUCARA25)? - Friday September 5th - Sunday 7th.? This will be held at the Visitor Center on the Harwell Campus.? Further details will be published soon on our the website - eucara.org.?
We are honored that Professor Jocelyn Bell Burnell will be our key note speaker.
When registration is open we will let you know via the forums.??
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???? Paul Hearn? ???? ?paul@...? ???? ?RA Section Director? ???
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Assistance with Graphic Art
My apologies that this post is a little off topic but the UK Radio Astronomy Association needs your help.
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We are a volunteer organisation which promotes all aspects of radio astronomy encourages amateur scientists to participate in observing the universe. We are seeking the assistance of a graphic artist to assist in the preparation of artwork for roller banners, posters, presentations and our website. The graphics will illustrate the science of astronomy and physics and be used at exhibitions and talks. We are a group of engineers who know our limitations and appreciate that this is not our area of expertise or talents! We have a vision of what we need but no ability to realise our goal. As a charity we do not have a large budgets to commission this work, but we appreciate that expenses need to be covered. An interest in astronomy would be helpful but is not necessary. If you are interested,? or know somebody who may able to assist please contact me on andrew.thomas@.... Andrew Thomas UKRAA Trustee |
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RAZoom Fri. Dec. 6th 19:30 GMT Cosmic ray muon measurement at a global scale
Professor???Department of Physics & Astronomy, Georgia State University
The development of a global network for Cosmic ray muon detection is described.? The focus of the presentation will be on the detector development and the expansion of the detector network worldwide which will be mainly used for monitoring the dynamic changes in the space and terrestrial weather in real-time at global scale.
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The Zoom link for this seminar has been posted.? If you have not received it or want to be added to the distribution list please contact me.
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???? Paul Hearn? ???? ?paul@...? ???? ?RA Section Director? ???
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Re: Wandering Radio Signal - ~370 to 390MHz - what is it?
开云体育Hi Andrew, The signal you are observing is most certainly not of astronomical origin. There is no spectral line from a known astronomical source at the frequency you mentioned. The sun is a broadband emitter and will not show a distinct frequency. Best regards, Wolfgang ? Von: [email protected] <[email protected]> Im Auftrag von Andrew SUTKOWSKI via groups.io ? I have been expreimenting with Radio Astronomy observing the hydrogen line using conical feedhorns using both gnuradio and sdrangel software. In the SDR angel software there is the star tracker which has 'heat' maps of the Milky way one of which is recorded at 480MHz. So I thought it would be interesting to see what 408MHz looks like locally, obviously its pretty busy. So using a V antenna (two concertina areial at 120 degree angle) going into a Noolec broadband amplifier feeding an Airspy R2 with 10 MHz bandwidth and sample rate I have been looking at 10 Mhz regions < 410 MHz. I have noticed that there is a signal which in the morning moves to lower frequency numbers and then around 2 pm starts to move back up to high frequency numbers. I have observerd, and continue to observe this signal over several days. I was wondering whether it was something to do with the sun, as by around 2 pm the sun is due south where the antenna is roughly pointing (at and angle of 40 - 50 degrees elevation). In the attachment you can see two examples of the peak of interest at 13:30 and 15:00 where the signal has moved frequency. At the end of the attachment is an excel plot of the data over several days, is some of the plot the signal went out of the observing frequnecy range, but overal you can see it is repetetive but perhaps the signal is moving slowly to high frequencies. As I say I though it might be the sun, and it was the doppler effect I was observing. It has been suggested that this might be a satellite and that I should lok for modulation in the signal. That is something I will try to do on Friday when I can get to the observatory. ? Can anyone help identify what it is I am observing here? |
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Wandering Radio Signal - ~370 to 390MHz - what is it?
I have been expreimenting with Radio Astronomy observing the hydrogen line using conical feedhorns using both gnuradio and sdrangel software. In the SDR angel software there is the star tracker which has 'heat' maps of the Milky way one of which is recorded at 480MHz. So I thought it would be interesting to see what 408MHz looks like locally, obviously its pretty busy. So using a V antenna (two concertina areial at 120 degree angle) going into a Noolec broadband amplifier feeding an Airspy R2 with 10 MHz bandwidth and sample rate I have been looking at 10 Mhz regions < 410 MHz. I have noticed that there is a signal which in the morning moves to lower frequency numbers and then around 2 pm starts to move back up to high frequency numbers. I have observerd, and continue to observe this signal over several days. I was wondering whether it was something to do with the sun, as by around 2 pm the sun is due south where the antenna is roughly pointing (at and angle of 40 - 50 degrees elevation). In the attachment you can see two examples of the peak of interest at 13:30 and 15:00 where the signal has moved frequency. At the end of the attachment is an excel plot of the data over several days, is some of the plot the signal went out of the observing frequnecy range, but overal you can see it is repetetive but perhaps the signal is moving slowly to high frequencies. As I say I though it might be the sun, and it was the doppler effect I was observing. It has been suggested that this might be a satellite and that I should lok for modulation in the signal. That is something I will try to do on Friday when I can get to the observatory.
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Can anyone help identify what it is I am observing here? |
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Re: Radio Lightning Detector
开云体育Inspire works very well detecting lightning and I am in UK so they sent it internationally to me without problem. Only issue is it also picks up mains hum which can be quite loud......but if you can get some distance from power cables then then
won't be issue and anyway you can hear the lightning in spite of mains hum.
Andy
Sent from From: [email protected] <[email protected]> on behalf of Ched Cheddles via groups.io <ched.cheddles@...>
Sent: Monday, November 25, 2024 11:13:10 AM To: [email protected] <[email protected]> Cc: [email protected] <[email protected]> Subject: Re: [baa-rag] Radio Lightning Detector ?
Hi?
I have one of the Inspire kits that I ordered from the US ( into the UK ) approx 3 years ago.
It took an afternoon to assemble and it seems to work very well.
Regards?
5
On 25 Nov 2024, at 10:34, Gabriel via groups.io <07gabriel.j.m@...> wrote:
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Re: Radio Lightning Detector
开云体育Hi? I have one of the Inspire kits that I ordered from the US ( into the UK ) approx 3 years ago. It took an afternoon to assemble and it seems to work very well. Regards? 5 On 25 Nov 2024, at 10:34, Gabriel via groups.io <07gabriel.j.m@...> wrote:
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Re: Radio Lightning Detector
Hello Andrew, I'm interested in the fact you say it works well as this seems to be my best chance yet!! they still have the option on the website to order internationally. where did you see that it says otherwise. may I also ask what sort of range are you getting distance wise from the lightning? Thanks Gabriel? On Tue, 19 Nov 2024 at 11:03, Andrew Thornett via <andrew=[email protected]> wrote:
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Re: Radio Lightning Detector
开云体育My recording of lightning was just chance as I was really looking for SIDs, which of course the lightning obscured. I can't remember where the lightning was, but as I'm in the Midlands I think anywhere in southernEngland usually shows up. ? Cheers, ? Mark |
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Re: Radio Lightning Detector
Hello! Thank you this is quite interesting! I assume you specifically did this when there was a storm in your area, just curious what sort of distance were you from it?? And yes I’ve seen a a lot of people use their PC’s!! ideally I will need it to be a standalone device with a simple output like an LED for every Spike.? But this gave me a very good idea of what frequencies I will look into? Thanks!? Gabriel? On Tue, 19 Nov 2024 at 4:50?PM, Mark Edwards via <mark=[email protected]> wrote:
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Re: Radio Lightning Detector
开云体育Hi, ? The attached plots shows plenty of noise spikes at VLF caused by lightning. So the easiest way to record them is to do as I do and just use a PC with a multi-turn loop plugged into its soundcard. With back-to-back diodes across it to stop any lightning damage! ? Then just run spectrum lab and monitor a quiet frequency without any VLF transmitters on it. ? Cheers, ? Mark |
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Re: Radio Lightning Detector
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> on behalf of John Berman via groups.io <jberman44@...>
Sent: Tuesday, November 19, 2024 11:54:54 AM To: [email protected] <[email protected]> Subject: Re: [baa-rag] Radio Lightning Detector ?
Hi Andy
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Interesting do you use this standalone or do you contribute to
?
Kind Regards
John B
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Re: Radio Lightning Detector
开云体育NASA had project called INSPIRE which developed a receiver for picking up lightning. I have one of the receivers. Works well apart from terrible interference from power lines at 50 Hz!
Andy
Sent from From: [email protected] <[email protected]> on behalf of Brian via groups.io <brian@...>
Sent: Tuesday, November 19, 2024 9:27:23 AM To: [email protected] <[email protected]> Subject: Re: [baa-rag] Radio Lightning Detector ?
Hello. Take a look at . I Googled "blitzortung receivers" and found lots of ideas there. When you start building I'm sure people on this group will have some stuff that is helpful at no cost. Good luck Brian On 19/11/2024 08:28, 07gabriel.j.m via groups.io wrote:
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Re: Radio Lightning Detector
开云体育Hello. Take a look at . I Googled "blitzortung receivers" and found lots of ideas there. When you start building I'm sure people on this group will have some stuff that is helpful at no cost. Good luck Brian On 19/11/2024 08:28, 07gabriel.j.m via
groups.io wrote:
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Radio Lightning Detector
Hello, so I am new to radio and am a student. I have a project to create a radio receiver that can detect lightning strikes. The idea sparked after my tutor mentioned how you could hear radio static on an old am radio when a strike happened. but now I am quite stuck on how to achieve this. at first I though I would just use an old am radio but have found I may get far more effective results using a low frequency receiver. my main constraint is budget as mentioned I am a student so can be quite difficult to work around that! I was just wondering if anyone may have some helpful advice on this topic, as seems like the right place to put it. |
Paul Hearn
