A nice display of Non-Io-C just about an hour ago obscured, a bit, by lightning.
?
Richard
|
Re: Solar 03/26/2025 Easley, South Carolina
As always, thanks John for the validation especially for the weak one at about 1504 UTC! Good to know I wasn't imagining things.....bill....
|
Solar 03/26/2025 Easley, South Carolina
Good evening: ? ? ? ?Some solar from today. Thanks to Bill for the heads-up.
John
|
solar events 26 March 2025, Prospect, Me
Good evening...two events recorded here, one quite weak and the other much stronger...bill...
|
Re: 24 March 2025 Some nice TeePees
Not bad, Richard!
?
Sabine
--
Germany
Standard time: UTC +1 hour
|
Re: Solar Flares 24-25 March 2025
Impressive, Carl!
?
Sabine
--
Germany
Standard time: UTC +1 hour
|
Re: 23 March 2025 Some very faint Io-B
Hi Richard,
?
looks very impressive! Since you were only able to see the signals in the RCP channel, I think it's highly likely that it's Jupiter. We recently had some deceptively real RFI signals documented, which are easily confused with s-bursts. You can probably see them in both circular polarization modes:
?
?
Sabine
--
Germany
Standard time: UTC +1 hour
|
Re: 24 Mar 2025 The ionosphere is back to normal conditions
Hi Mark,
?
the correct term is "TPs" or "teepees," because the phenomenon resembles Native American dwellings. For people like me, with inadequate antennas and limited bandwidth, only a glow is visible throughout the spectrogram during the day. I call it "airglow," in reference to the nighttime sky glow known from the visible spectrum, which is said to be due to ion recombination in the ionosphere.
You can read all the essential information about teepees in Great Typinski's publications:
?
Sabine
--
Germany
Standard time: UTC +1 hour
|
26 Mar 2025 Bright airglow with teepees
Yesterday's ionosphere was very energetic.
?
Sabine
?
--
Germany
Standard time: UTC +1 hour
|
Re: Audio specimen The sound an N Burst makes?
Attached is a snippet of an N event during an Io-C recorded Nov 13 2018 at
2040 UT. I pretty much use Dave's and Larry's method of tuning into where
the emissions appear on the spectrograph. Sorry I don't have further
details at the moment. Am away from my computer. Tom in New Mexico
toggle quoted message
Show quoted text
Steve, Dave, All,
Those using their SDR receiver with SDR Console, SDRc2RSS, and RSS can
demodulate any frequency in its current spectrograph span. Demodulation
can
be selected as AM, CW, USB, LSB and even NBFM and wide band FM. The audio
bandwidth will be limited to a normal audio variable bandwidth for a given
mode selected. Usually 6 kHz SSB is an effective choice. With SDR Console
the audio receiver demod frequency can be changed while watching the full
bandwidth spectrogram on RSS. Just wait for an N event then tune the SDR
Console receiver audio demod to the frequency the N event is covering. You
can even follow it as the frequency changes. Have an audio recorder handy
or record the sounds or to an audio file on your computer.
One could do the same thing with two SDR receivers. One SDR displaying the
spectrograph, another one to record demodulated sound to an audio recorder
separately. Many combinations are possible. Experiment.
Lastly, this would make a wonderful Radio JOVE Citizen Science project.
The
RJ files for SDR Console and SDRc2RSS are on the Radio JOVE WIKI page. To
find the WIKI page look in the RJ left hand toolbar of the Radio JOVE
groups.io page. This could also be accomplished with the original Radio
JOVE receiver and Radio Sky Pipe but it would be more difficult.
Challenge: Who will be the first to record and document an N event sound?
Larry
_______________________
On Tue, Mar 25, 2025 at 6:55?€?PM Dave Typinski via groups.io <davetyp=
[email protected]> wrote:
I have no idea... but I speculate that it wouldn't sound like much of
anything
for the smooth L-type N events -- just a really gradual slight rise in
background noise and an equally slow decay as the N event slewed past
the
frequency channel being monitored. For an N event made of a train of S
bursts,
it would probably sound like S bursts.
Since N events are narrow band emission, the challenge is tuning a
single-freq
AM or SSB receiver to the appropriate freq where the N event exists --
when it
exists.
That might be easier to do in real time with the SDRs using the
waterfall
spectrogram as a guide, but I don't know if their software can output
the
audio
(AM or SSB demodulation?) from a single FFT output channel when the SDR
is
operating at its widest coverage mode (8 or 10 or 16 MHz or whatever it
is).
--
Dave
On 3/24/25 23:14, Steve Chaters via groups.io wrote:
Hello,
I have learned that Jovian L bursts sounds like waves breaking on a beach, and S
bursts sound like popping corn. But I have looked and no one seems to talk
about what N bursts sound like.....does anyone know?
Cheers..........Steve
|
Re: The sound an N Burst makes?
Dave, Yes SDR Console can display a full span spectrograph and a totally separate audio channel spectrograph window at the same time. The spectrograph and audio FFT streams are processed separately inside SDR Console software. You can turn audio AGC on or off as well as selecting frequency, demod mode and many other audio settings and not affect the full span spectrograph since they are processed separately. The full span spectrograph data stream is displayed on your monitor screen along with a separate audio receiver ?window. In the separate full span spectrograph window there are many controls over the SDR Console spectrograph display such as frequency span, time stamp, colors, speed rate of the spectrograph, etc. the software is sophisticated and it has a data repeater function that sends the spectrograph data stream to the SDRc2RSS interface program for processing and decimation to RSS protocol specifications for display in a separate normal RSS spectrograph. The computer CPU and RAM requirements need to be sufficient to process all of these features and spectrographs concurrently.?
On Tue, Mar 25, 2025 at 10:06?PM Steve Chaters via <stevechtrs= [email protected]> wrote:
Thanks Larry,
That is a very interesting idea.? I am dealing with more immediate issues right now but will return to this email when the opportunity presents itself.
Cheers......Steve
On Tuesday, 25 March 2025 at 21:25:08 GMT-4, Larry Dodd via <101science= [email protected]> wrote:
Steve, Dave, All, Those using their SDR receiver with SDR Console, SDRc2RSS, and RSS can demodulate any frequency in its current spectrograph span. Demodulation can be selected as AM, CW, USB, LSB and even NBFM and wide band FM. The audio bandwidth will be limited to a normal audio variable bandwidth for a given mode selected. Usually 6 kHz SSB is an effective choice. With SDR Console the audio receiver demod frequency can be changed while watching the full bandwidth spectrogram on RSS. Just wait for an N event then tune the SDR Console receiver audio demod to the frequency the N event is covering. You can even follow it as the frequency changes. Have an audio recorder handy or record the sounds or to an audio file on your computer.?
One could do the same thing with two SDR receivers. One SDR displaying the spectrograph, another one to record demodulated sound to an audio recorder separately. Many combinations are possible. Experiment.?
Lastly, this would make a wonderful Radio JOVE Citizen Science project. The RJ files for SDR Console and SDRc2RSS are on the Radio JOVE WIKI page. To find the WIKI page look in the RJ ?left hand toolbar of the Radio JOVE page. This could also be accomplished with the original Radio JOVE receiver and Radio Sky Pipe but it would be more difficult.?
Challenge: Who will be the first to record and document an N event sound??
I have no idea... but I speculate that it wouldn't sound like much of anything
for the smooth L-type N events -- just a really gradual slight rise in
background noise and an equally slow decay as the N event slewed past the
frequency channel being monitored.? For an N event made of a train of S bursts,
it would probably sound like S bursts.
Since N events are narrow band emission, the challenge is tuning a single-freq
AM or SSB receiver to the appropriate freq where the N event exists -- when it
exists.
That might be easier to do in real time with the SDRs using the waterfall
spectrogram as a guide, but I don't know if their software can output the audio
(AM or SSB demodulation?) from a single FFT output channel when the SDR is
operating at its widest coverage mode (8 or 10 or 16 MHz or whatever it is).
--
Dave
On 3/24/25 23:14, Steve Chaters via wrote:
> Hello,
>
> I have learned that Jovian L bursts sounds like waves breaking on a beach, and S
> bursts sound like popping corn.? But I have looked and no one seems to talk
> about what N bursts sound like.....does anyone know?
>
> Cheers..........Steve
>
|
Re: The sound an N Burst makes?
Steve Understand. Thanks for all that you do b Larry K4LED
toggle quoted message
Show quoted text
On Mar 25, 2025, at 10:06?PM, Steve Chaters via groups.io <stevechtrs@...> wrote:
?
Thanks Larry,
That is a very interesting idea.? I am dealing with more immediate issues right now but will return to this email when the opportunity presents itself.
Cheers......Steve
Steve, Dave, All, Those using their SDR receiver with SDR Console, SDRc2RSS, and RSS can demodulate any frequency in its current spectrograph span. Demodulation can be selected as AM, CW, USB, LSB and even NBFM and wide band FM. The audio bandwidth will be limited to a normal audio variable bandwidth for a given mode selected. Usually 6 kHz SSB is an effective choice. With SDR Console the audio receiver demod frequency can be changed while watching the full bandwidth spectrogram on RSS. Just wait for an N event then tune the SDR Console receiver audio demod to the frequency the N event is covering. You can even follow it as the frequency changes. Have an audio recorder handy or record the sounds or to an audio file on your computer.?
One could do the same thing with two SDR receivers. One SDR displaying the spectrograph, another one to record demodulated sound to an audio recorder separately. Many combinations are possible. Experiment.?
Lastly, this would make a wonderful Radio JOVE Citizen Science project. The RJ files for SDR Console and SDRc2RSS are on the Radio JOVE WIKI page. To find the WIKI page look in the RJ ?left hand toolbar of the Radio JOVE page. This could also be accomplished with the original Radio JOVE receiver and Radio Sky Pipe but it would be more difficult.?
Challenge: Who will be the first to record and document an N event sound??
I have no idea... but I speculate that it wouldn't sound like much of anything
for the smooth L-type N events -- just a really gradual slight rise in
background noise and an equally slow decay as the N event slewed past the
frequency channel being monitored.? For an N event made of a train of S bursts,
it would probably sound like S bursts.
Since N events are narrow band emission, the challenge is tuning a single-freq
AM or SSB receiver to the appropriate freq where the N event exists -- when it
exists.
That might be easier to do in real time with the SDRs using the waterfall
spectrogram as a guide, but I don't know if their software can output the audio
(AM or SSB demodulation?) from a single FFT output channel when the SDR is
operating at its widest coverage mode (8 or 10 or 16 MHz or whatever it is).
--
Dave
On 3/24/25 23:14, Steve Chaters via wrote:
> Hello,
>
> I have learned that Jovian L bursts sounds like waves breaking on a beach, and S
> bursts sound like popping corn.? But I have looked and no one seems to talk
> about what N bursts sound like.....does anyone know?
>
> Cheers..........Steve
>
|
Re: The sound an N Burst makes?
Thanks Larry,
That is a very interesting idea.? I am dealing with more immediate issues right now but will return to this email when the opportunity presents itself.
Cheers......Steve
Steve, Dave, All, Those using their SDR receiver with SDR Console, SDRc2RSS, and RSS can demodulate any frequency in its current spectrograph span. Demodulation can be selected as AM, CW, USB, LSB and even NBFM and wide band FM. The audio bandwidth will be limited to a normal audio variable bandwidth for a given mode selected. Usually 6 kHz SSB is an effective choice. With SDR Console the audio receiver demod frequency can be changed while watching the full bandwidth spectrogram on RSS. Just wait for an N event then tune the SDR Console receiver audio demod to the frequency the N event is covering. You can even follow it as the frequency changes. Have an audio recorder handy or record the sounds or to an audio file on your computer.?
One could do the same thing with two SDR receivers. One SDR displaying the spectrograph, another one to record demodulated sound to an audio recorder separately. Many combinations are possible. Experiment.?
Lastly, this would make a wonderful Radio JOVE Citizen Science project. The RJ files for SDR Console and SDRc2RSS are on the Radio JOVE WIKI page. To find the WIKI page look in the RJ ?left hand toolbar of the Radio JOVE page. This could also be accomplished with the original Radio JOVE receiver and Radio Sky Pipe but it would be more difficult.?
Challenge: Who will be the first to record and document an N event sound??
I have no idea... but I speculate that it wouldn't sound like much of anything
for the smooth L-type N events -- just a really gradual slight rise in
background noise and an equally slow decay as the N event slewed past the
frequency channel being monitored.? For an N event made of a train of S bursts,
it would probably sound like S bursts.
Since N events are narrow band emission, the challenge is tuning a single-freq
AM or SSB receiver to the appropriate freq where the N event exists -- when it
exists.
That might be easier to do in real time with the SDRs using the waterfall
spectrogram as a guide, but I don't know if their software can output the audio
(AM or SSB demodulation?) from a single FFT output channel when the SDR is
operating at its widest coverage mode (8 or 10 or 16 MHz or whatever it is).
--
Dave
On 3/24/25 23:14, Steve Chaters via wrote:
> Hello,
>
> I have learned that Jovian L bursts sounds like waves breaking on a beach, and S
> bursts sound like popping corn.? But I have looked and no one seems to talk
> about what N bursts sound like.....does anyone know?
>
> Cheers..........Steve
>
|
Re: 24 Mar 2025 The ionosphere is back to normal conditions
What is the physics of airglow?? I'm new here.
?
73
?
Mark
W5PW
|
Re: The sound an N Burst makes?
Thanks Dave, that is very helpful.
Cheers........Steve
I have no idea... but I speculate that it wouldn't sound like much of anything for the smooth L-type N events -- just a really gradual slight rise in background noise and an equally slow decay as the N event slewed past the frequency channel being monitored.? For an N event made of a train of S bursts, it would probably sound like S bursts. Since N events are narrow band emission, the challenge is tuning a single-freq AM or SSB receiver to the appropriate freq where the N event exists -- when it exists. That might be easier to do in real time with the SDRs using the waterfall spectrogram as a guide, but I don't know if their software can output the audio (AM or SSB demodulation?) from a single FFT output channel when the SDR is operating at its widest coverage mode (8 or 10 or 16 MHz or whatever it is). -- Dave
On 3/24/25 23:14, Steve Chaters via groups.io wrote:
> Hello,
>
> I have learned that Jovian L bursts sounds like waves breaking on a beach, and S
> bursts sound like popping corn.? But I have looked and no one seems to talk
> about what N bursts sound like.....does anyone know?
>
> Cheers..........Steve
>
|
Re: The sound an N Burst makes?
Steve, Dave, All, Those using their SDR receiver with SDR Console, SDRc2RSS, and RSS can demodulate any frequency in its current spectrograph span. Demodulation can be selected as AM, CW, USB, LSB and even NBFM and wide band FM. The audio bandwidth will be limited to a normal audio variable bandwidth for a given mode selected. Usually 6 kHz SSB is an effective choice. With SDR Console the audio receiver demod frequency can be changed while watching the full bandwidth spectrogram on RSS. Just wait for an N event then tune the SDR Console receiver audio demod to the frequency the N event is covering. You can even follow it as the frequency changes. Have an audio recorder handy or record the sounds or to an audio file on your computer.?
One could do the same thing with two SDR receivers. One SDR displaying the spectrograph, another one to record demodulated sound to an audio recorder separately. Many combinations are possible. Experiment.?
Lastly, this would make a wonderful Radio JOVE Citizen Science project. The RJ files for SDR Console and SDRc2RSS are on the Radio JOVE WIKI page. To find the WIKI page look in the RJ ?left hand toolbar of the Radio JOVE page. This could also be accomplished with the original Radio JOVE receiver and Radio Sky Pipe but it would be more difficult.?
Challenge: Who will be the first to record and document an N event sound??
I have no idea... but I speculate that it wouldn't sound like much of anything
for the smooth L-type N events -- just a really gradual slight rise in
background noise and an equally slow decay as the N event slewed past the
frequency channel being monitored.? For an N event made of a train of S bursts,
it would probably sound like S bursts.
Since N events are narrow band emission, the challenge is tuning a single-freq
AM or SSB receiver to the appropriate freq where the N event exists -- when it
exists.
That might be easier to do in real time with the SDRs using the waterfall
spectrogram as a guide, but I don't know if their software can output the audio
(AM or SSB demodulation?) from a single FFT output channel when the SDR is
operating at its widest coverage mode (8 or 10 or 16 MHz or whatever it is).
--
Dave
On 3/24/25 23:14, Steve Chaters via wrote:
> Hello,
>
> I have learned that Jovian L bursts sounds like waves breaking on a beach, and S
> bursts sound like popping corn.? But I have looked and no one seems to talk
> about what N bursts sound like.....does anyone know?
>
> Cheers..........Steve
>
|
HI
?
Solar event Today
?
Salvador
|
Re: The sound an N Burst makes?
I have no idea... but I speculate that it wouldn't sound like much of anything for the smooth L-type N events -- just a really gradual slight rise in background noise and an equally slow decay as the N event slewed past the frequency channel being monitored. For an N event made of a train of S bursts, it would probably sound like S bursts.
Since N events are narrow band emission, the challenge is tuning a single-freq AM or SSB receiver to the appropriate freq where the N event exists -- when it exists.
That might be easier to do in real time with the SDRs using the waterfall spectrogram as a guide, but I don't know if their software can output the audio (AM or SSB demodulation?) from a single FFT output channel when the SDR is operating at its widest coverage mode (8 or 10 or 16 MHz or whatever it is).
--
Dave
toggle quoted message
Show quoted text
On 3/24/25 23:14, Steve Chaters via groups.io wrote: Hello,
I have learned that Jovian L bursts sounds like waves breaking on a beach, and S
bursts sound like popping corn. But I have looked and no one seems to talk
about what N bursts sound like.....does anyone know?
Cheers..........Steve
|
Re: Solar Flares 24-25 March 2025
Hi Carl.
?
excellent work??
?
Salvador
|
Solar Flares 24-25 March 2025
Good Day All,
Two Possible flares in yesterday's data,March 24-25. Any others get to chach these....
Carl
|
Sabine Cremer
Larry Dodd
salvador aguirre
Dave Typinski
Carl Pajak Phone
