Solar today, May 14, 2025, from the Dark Sky Observatory
Here is the solar, also observed by John and Bill.
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Richard
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Re: non IoA 05/14/2025 Easley, South Carolina
Hi John,
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I got the same thing, beginning very weakly at about 17:30, and then brightest around 17:50 UTC.? I have attached the brightest part of the non-Io-A "storm".
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Richard
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non IoA 05/14/2025 Easley, South Carolina
Good evening again: ? ? ?I am not at all sure about this one. Calling this non IoA. Any opinions?
John
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Solar SID 05/14/2025 Easley, South Carolina
Good evening: ? ? ?Solar SID from today.
John
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Solar events, 14 May 2025, Prospect, ME
Good evening...so late afternoon activity.
There first 3 spectrograms may all be part of about a 7 minutes of activity.
The next at about 1920:30 UTC was weak and may have been followed by 2 or 3 more even weaker.
The last 1939:20 UTC.
....bill....
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Re: Solar Events 13 May, 2025
Forgot to say the SID plot is of NPM in Hawaii received here in Comoc BC
John P
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Solar Events 13 May, 2025
Here are my recordings of the X1.2 flare initiated events from the 13th, both Jove and SID Rx.
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Re: Solar Events 12-13 May, 2025 Wasilla AK
Larry, Very clear and well said. Thank you so much for the refresher!! Carl
Carl, All,? The bandwidth limitation is primarily your antenna. Receivers, of course, also have a bandwidth limitation.?Broad bandwidth isn¡¯t always a good thing. Great for broad solar events, but not so good for viewing tiny Jupiter events. Jupiter events ¡°tend¡± to be within the 8Mhz bandwidth centered around 20.1 MHz. It¡¯s very similar to optical telescopes. High power usually equals a narrow field of view. Binoculars give a nice wide field of view but make seeing tiny, deep sky objects harder.?There are very wide bandwidth antennas for ALE that work for 3 to 30 MHz, but you miss the small Jupiter signals once it¡¯s squeezed into the RSS-limited spectrograph space.?It all depends on where your interest lies. Wide bandwidth antennas also tend to have less gain. Radio JOVE emphasizes?Jupiter's observations. It¡¯s our namesake. It¡¯s the science our Radio JOVE founders concentrated on. Solar events are stronger, broader, and easier to capture but require a different set of equipment that¡¯s not always ideal for Jupiter observations. All observations are interesting and important from a science perspective. For Jupiter observations, the current Radio JOVE 2.1 observatory (Dual Dipole or the TFD antenna, RSP1B receiver) 8 MHz bandwidth package is an excellent choice for Jupiter observing, and it helps to standardize Jupiter observations between stations.?A vital?science issue often overlooked.?
On Wed, May 14, 2025, at 7:38?AM, Carl Pajak Phone via <pajakonice= [email protected]> wrote: Dave, Thank you for your input.? I will bump up to 10 Mhz bandwidth on my next data set.? I believe I may have done that on the first try, but I may be mistaken.
Kind of miss my SDRpay2RSS...... :)
Thanks again, Carl
Carl, maybe I'm off base, but correct me if I'm going down the wrong rabbit hole.?
The SDRPlay and Airspy SDRs can and do scan either 2.0 or 10 MHz.? However, on either end, there is a 1 MHz falloff in response.? So with a 10 MHz setting, you get only 8 MHz of useful data in the plots.??
For example, I presently have a 3-element home brew Yagi pointing straight upward to catch CYG and CASS on 144.096 MHz on a drift scan.? I'm operating an AirSpy Discovery HF+ on the PC using SDR Console.? While it will not do a sweep of 2.0 or 10 MHz, its maximum sweep is ¡À96 MHz.? Here is a screen grab which I just took: Note the fall-off on each end of the sweep.? While it posts ¡À 96 kHs sweep, the bottom and top of the sweep fall off the lower and upper of 40 kHz each in response, so the useful data window is only 112 kHz wide.
So with the SDRPlay and the AirSpy offerings, your useful data window is less than "advertised".? Set for a 10 MHz sweep which I see in your images, the useful window is only 8 MHz wide.?
Dave - W?LEV ?
On Tue, May 13, 2025 at 10:47?AM Carl Pajak Phone via <pajakonice= [email protected]> wrote: Good Day All,
Some solar events, all day long...
Still working on my local setting with SDR Console/SDRC2RSS on getting it cleaned up.? Not quite sure whats causing the High/Low end dropoff. Anyone else has this?
Carl Wasilla AK USA
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Re: Solar and RF fadeout North Tasmania, Australia
Luke, Very interesting observation Luke. Your microscopic 8 Mhz spectrograph shows a lot of detail missing in the extremely wide bandwidth Learmouth spectrograph. The solar event at a very high frequency (-100Mhz) is centered on the HF fade out shown in your spectrgtoph and at the bottom of the Learmouth spectrograph. Your observation is an excellent example of comparing a narrowbandwidth to an extremely wide bandwidth.? Thank you for your observation. Larry K4LED
On Wed, May 14, 2025 at 8:30?AM Luke Murphy via <lukepmurphy= [email protected]> wrote: Hi, ?????? Some weak solar and RF fade out. Also see comparison from Learmonth observatory around the same timeframe. ? ? ?  ?? 
? ? Regards, ? ??????????????????Luke.
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Re: Solar Events 12-13 May, 2025 Wasilla AK
Carl, All,? The bandwidth limitation is primarily your antenna. Receivers, of course, also have a bandwidth limitation.?Broad bandwidth isn¡¯t always a good thing. Great for broad solar events, but not so good for viewing tiny Jupiter events. Jupiter events ¡°tend¡± to be within the 8Mhz bandwidth centered around 20.1 MHz. It¡¯s very similar to optical telescopes. High power usually equals a narrow field of view. Binoculars give a nice wide field of view but make seeing tiny, deep sky objects harder.?There are very wide bandwidth antennas for ALE that work for 3 to 30 MHz, but you miss the small Jupiter signals once it¡¯s squeezed into the RSS-limited spectrograph space.?It all depends on where your interest lies. Wide bandwidth antennas also tend to have less gain. Radio JOVE emphasizes?Jupiter's observations. It¡¯s our namesake. It¡¯s the science our Radio JOVE founders concentrated on. Solar events are stronger, broader, and easier to capture but require a different set of equipment that¡¯s not always ideal for Jupiter observations. All observations are interesting and important from a science perspective. For Jupiter observations, the current Radio JOVE 2.1 observatory (Dual Dipole or the TFD antenna, RSP1B receiver) 8 MHz bandwidth package is an excellent choice for Jupiter observing, and it helps to standardize Jupiter observations between stations.?A vital?science issue often overlooked.?
On Wed, May 14, 2025, at 7:38?AM, Carl Pajak Phone via <pajakonice= [email protected]> wrote: Dave, Thank you for your input.? I will bump up to 10 Mhz bandwidth on my next data set.? I believe I may have done that on the first try, but I may be mistaken.
Kind of miss my SDRpay2RSS...... :)
Thanks again, Carl
Carl, maybe I'm off base, but correct me if I'm going down the wrong rabbit hole.?
The SDRPlay and Airspy SDRs can and do scan either 2.0 or 10 MHz.? However, on either end, there is a 1 MHz falloff in response.? So with a 10 MHz setting, you get only 8 MHz of useful data in the plots.??
For example, I presently have a 3-element home brew Yagi pointing straight upward to catch CYG and CASS on 144.096 MHz on a drift scan.? I'm operating an AirSpy Discovery HF+ on the PC using SDR Console.? While it will not do a sweep of 2.0 or 10 MHz, its maximum sweep is ¡À96 MHz.? Here is a screen grab which I just took: Note the fall-off on each end of the sweep.? While it posts ¡À 96 kHs sweep, the bottom and top of the sweep fall off the lower and upper of 40 kHz each in response, so the useful data window is only 112 kHz wide.
So with the SDRPlay and the AirSpy offerings, your useful data window is less than "advertised".? Set for a 10 MHz sweep which I see in your images, the useful window is only 8 MHz wide.?
Dave - W?LEV ?
On Tue, May 13, 2025 at 10:47?AM Carl Pajak Phone via <pajakonice= [email protected]> wrote: Good Day All,
Some solar events, all day long...
Still working on my local setting with SDR Console/SDRC2RSS on getting it cleaned up.? Not quite sure whats causing the High/Low end dropoff. Anyone else has this?
Carl Wasilla AK USA
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Observations from Grafton, WV.
So a storm came through and knocked my electricity out for several hours. I am just now getting back online and looking at yesterdays events. Looks like I might have missed one this morning.
~Duane
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Re: Views of the Solar "Storm" from the Dark Sky Observatory May 13, 2025
We could go for an even broader bandwidth, but then we would lose frequency resolution which would not be good for the Jupiter-Io observations.
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Richard
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Re: Views of the Solar "Storm" from the Dark Sky Observatory May 13, 2025
Hi Carl,
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We are using RX-888 Mk II SDRs.? Our antenna is a TFD square array.? The terminated folded dipoles also help with a broader bandwidth.
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Richard
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Solar and RF fadeout North Tasmania, Australia
Hi, ?????? Some weak solar and RF fade out. Also see comparison from Learmonth observatory around the same timeframe. ? ? ?  ?? 
? ? Regards, ? ??????????????????Luke.
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Re: Views of the Solar "Storm" from the Dark Sky Observatory May 13, 2025
Just WOW! Richard, what receiver are you using for such wide bandwidth? Great captures!
Carl Wasilla, AK
Here are some views of the fantastic solar earlier today from the Dark Sky Observatory.? The first shows the entire "storm", and the remaining spectrographs show some of the details.
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Richard
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Re: Solar Events 12-13 May, 2025 Wasilla AK
Dave, Thank you for your input.? I will bump up to 10 Mhz bandwidth on my next data set.? I believe I may have done that on the first try, but I may be mistaken.
Kind of miss my SDRpay2RSS...... :)
Thanks again, Carl
Carl, maybe I'm off base, but correct me if I'm going down the wrong rabbit hole.?
The SDRPlay and Airspy SDRs can and do scan either 2.0 or 10 MHz.? However, on either end, there is a 1 MHz falloff in response.? So with a 10 MHz setting, you get only 8 MHz of useful data in the plots.??
For example, I presently have a 3-element home brew Yagi pointing straight upward to catch CYG and CASS on 144.096 MHz on a drift scan.? I'm operating an AirSpy Discovery HF+ on the PC using SDR Console.? While it will not do a sweep of 2.0 or 10 MHz, its maximum sweep is ¡À96 MHz.? Here is a screen grab which I just took: Note the fall-off on each end of the sweep.? While it posts ¡À 96 kHs sweep, the bottom and top of the sweep fall off the lower and upper of 40 kHz each in response, so the useful data window is only 112 kHz wide.
So with the SDRPlay and the AirSpy offerings, your useful data window is less than "advertised".? Set for a 10 MHz sweep which I see in your images, the useful window is only 8 MHz wide.?
Dave - W?LEV ?
On Tue, May 13, 2025 at 10:47?AM Carl Pajak Phone via <pajakonice= [email protected]> wrote: Good Day All,
Some solar events, all day long...
Still working on my local setting with SDR Console/SDRC2RSS on getting it cleaned up.? Not quite sure whats causing the High/Low end dropoff. Anyone else has this?
Carl Wasilla AK USA
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Hi jim,
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Yes thanks - it?s solved now - Btw, On a trip to Big Island and Oahu, Honolulu. We so people giving the hand sign and use ?Aloha as "see" you - I found it was a nice way, to think about the trip to a fascination natur on - ?Hawaii!
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So by using the word - it reminds me about a nice experience
?so Aloha!
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Aloha - john s,
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Hi jim,
Thanks for comming in - I have been around the menus in RSS and - yes found the bottum for RTLW-configuration!
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So thank you jim!? ??
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Aloha - john s,
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Solar event on 13 may 2025 @ 15:36 UTC
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Solar accompanied with a strong radio blackout from the far side.
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Huub
Breda, The Netherlands
Grid locator: JO21jn
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Carl Pajak Phone
Larry Dodd
john sommer
