On Wednesday, March 26, 2025, 8:55 PM, Richard Gray via groups.io <grayro@...> wrote:

A nice display of Non-Io-C just about an hour ago obscured, a bit, by lightning.

?

Richard

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

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

On Tuesday, 25 March 2025 at 21:25:08 GMT-4, Larry Dodd via groups.io <101science@...> 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??

Larry

_______________________

On Tue, Mar 25, 2025 at 6:55?PM Dave Typinski via <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 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
>