Re: X3 Flare observations 9 Feb
The flare was very strong with excellent SIDs, but my single axis magnetic sensor does not show the SFE. It will be interesting to see how it is recorded in other parts of the country. John.
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John Cook
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#1474
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Re: X3 Flare observations 9 Feb
I saw similar SIDs and magnetic effects in Kent. The magnetic change was clear but less pronounced than in Scotland. In particular the effect on the Declination lasted approximately and hour and a
By
Andrew Thomas
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#1473
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X3 Flare observations 9 Feb
The SID resulting from a X3.3 X-ray flare peaking at about? 13:14 UT was observed here on the Isle of Mull, particularly well seen on signals from DHO on 23.4 kHz. Effects also seen with the other
By
Roger Blackwell GM4PMK
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#1472
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Muon detectors at Astrofest
Just to show the effect of talking about something on a public stage such as Astrofest, we had the wonderful experience at Astrofest of queues of people around the BAA stand all wanting to find out
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Andrew Thornett
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#1471
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Re: Muon detectors and BAA RAG at Astrofest
Glad to hear that it went well. Sadly there were no trains from here on Saturday, so I missed yet another year. John.
By
John Cook
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#1470
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Re: Muon detectors and BAA RAG at Astrofest
Thanks John. That is very kind of you Sent from Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ Sent: Saturday, February 3, 2024 6:42:19 PM To: [email protected]
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Andrew Thornett
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#1469
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Re: Muon detectors and BAA RAG at Astrofest
Hi Andrew Well done on a great presentation. Many attendees commented on your presentation which generated a whole lot of interest and was a very positive response to what we endeavour to deliver to a
By
John Thain
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#1468
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Muon detectors and BAA RAG at Astrofest
It was wonderful to see how many people stopped by the BAA stand at Astrofest this week to find out from Andrew Thomas and team about the UKRAA Muon Detectors. The team did marvellous job! Andy Sent
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Andrew Thornett
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#1467
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Re: New meteor receiver on line
Wow - that bunch of reflections all over all the receivers is impressive. I had guessed last night when I saw the upper right pane with no title that it was your opposite polarity receiver. Well done
By
Tony Abbey
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#1466
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New meteor receiver on line
A new receiver in the developing network of receivers for the GB3MBA UK meteor beacon is on line from my location for the next few days. It is client 3 top row - right on the live stream at:-
By
Brian
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#1465
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Re: BAA RAZoom Fri. Feb. 2nd. Interferometry - Marcus Leach
Hi Paul, I have not received the link. Can you please send it? Thanks, Wolfgang Von: [email protected] <[email protected]> Im Auftrag von Paul Hearn Gesendet: Montag, 29. Januar 2024 08:58 An:
By
messbetrieb@...
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#1464
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Re: Hi - and I have a 6ft /1.8m parabolic dish to dispose of
Melvyn G8RRN - I did respond to tor PM on this - maybe it went into your spam? Steve G8KHW
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Steve G8KHW / AJ4XE <steve@...>
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#1463
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BAA RAZoom Fri. Feb. 2nd. Interferometry - Marcus Leach
Friday Feb. 2nd. 19:30 GMT (19:30 UTC) on Zoom *Amateur SDR based* *interferometry -* hardware and software. (Getting started) Marcus Leach President. *Canadian Centre for??Experimental?Radio
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Paul Hearn
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#1462
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Muon Detection rates with readily available radiation source at home
Might interest you all! Andy
By
Andrew Thornett
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#1461
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Re: Antenna feed return loss
Thanks Peter, I was trying to keep things simple and not have a feed cable (although I accept even a connector is a short length of 50ohm coax) but had forgotten I had measured the antenna into 50
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Melvyn Jones
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#1460
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Hi - and I have a 6ft /1.8m parabolic dish to dispose of
Hi folk - I'm a radio ham and just joined this group because I have a 1.8m, 6 petal aluminium parabolic dish to dispose of. Obviously of interest for EME and Radio Astronomy. I'm pretty sure it was
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Steve G8KHW / AJ4XE <steve@...>
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#1459
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Polar Aeronomy and Radio Science Summer School (PARS)
Please see the attached 2024 Polar Aeronomy and Radio Science Summer School (PARS) announcement ( https://haarp.gi.alaska.edu/pars2024 ).? The 10-day program will be held at the University of Alaska
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WReeve
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#1458
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Re: Antenna feed return loss
It is not easy to give you a satisfactory answer Melvyn. If you connect your antenna directly to the LNA, then you can almost use ohms law to work out the power loss plus the equivalent loss added
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pwe237
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#1457
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Re: GB3MBA receiver network update
Now it's getting quite interesting. No feedback yet from Leicester National Space Centre or university research group. Tony
By
Tony Abbey
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#1456
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Antenna feed return loss
A question for the RF engineers amongst us. How important the output return loss of the antenna feed. To my mind if you have an LNA of 75K input noise temperature, as well as adding that noise to the
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Melvyn Jones
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#1455
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