¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
  1. Radio-Jove
  2. Messages
Expanded Topics Messages Polls
Date
24 Mar 2025 The ionosphere is back to normal conditions

 

As far as I can tell from my recordings, the ionosphere has returned to its normal state. The sunrise creates a decent airglow that persists throughout the day and the sunset delights us with well-defined nested teepees.
?
Sabine
?
--

Germany
Standard time: UTC +1 hour

250324050000Frenkhausen_sunrise.PNG
250324170000Frenkhausen_sunset.PNG

The sound an N Burst makes?

 

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
24 March 2025 Some nice TeePees

 

These TeePees are from the middle of the day, and result from some distant lightning.
?
Richard

250324120018Dark-Sky-Observatory-TP.PNG

Re: 23 March 2025 Some very faint Io-B

 

I should have posted this with the images.
?
Richard

Jupiter-Io_2025-03-23.png

23 March 2025 Some very faint Io-B

 

Folks,
?
The DSO TFD Array recorded some very faint Io-B early on 23 March 2025.? You will need to squint and stand on your left leg to see this, but all (except possibly the second [B] image) have been verified as Io-B because the bursts are visible on the RCP channel but not the LCP channel.? All of these events are, I think, S-bursts.? In the case of the second image, the slanting chain of "bursts" is very faintly visible in the LCP channel, so I am not certain if it is genuine Io-B; I would be interested in other's opinions.
?
Richard

250323001003Dark-Sky-Observatory-A.PNG
250323001003Dark-Sky-Observatory-B.PNG
250323001003Dark-Sky-Observatory-C.PNG
250323001003Dark-Sky-Observatory-D.PNG
250323001003Dark-Sky-Observatory-E.PNG

23 Mar 2025 Ionosphere again depressed through the day (Europe)

 

After a promising start to the morning with a few well-defined teepees, the airglow completely disappeared before midday.*
From this point on, band noise was low as it usually is in the late evening, and the ionosondes kamen nicht richtig aus dem Quark.
?
* Unfortunately, prolonged distributed noise completely obscured the crucial phase.
?
Sabine
?
--

Germany
Standard time: UTC +1 hour

250323050000Frenkhausen_sunrise.PNG
250323170000Frenkhausen_sunset.PNG

Solar 03/23/2025 Easley, South Carolina

 

Good evening:
? ? ? Solar from today. Thanks to Bill for the heads-up.

John

Solar03232025Labeled1A.PNG

Solar Event 23 March 2025, Prospect, ME

 

A weak event:
1170       1451   ////      1452  SVI  C   RSP  025-180   III/1             4035

....bill...

250323145110Prospect.jpg

Re: Solar Event 22 March 2025, Prospect, ME

 

Indeed there are John...they have kept me interested in "radio" for 65 years or so....bill....
Re: Solar Event 22 March 2025, Prospect, ME

 

Thanks Dave...certainly a possibility...there are a couple commercial FM station antenna just 3 miles from the house.
Techs are frequently up on the hill twiddling and fiddling with the knobs. The one person I could have asked passed away 2-3 years ago.
...thanks....bill....
Re: Solar Event 22 March 2025, Prospect, ME

 

Seems to be a lot of little mysteries in this business.

John




On Sunday, March 23, 2025, 12:38 PM, bsneed1 via groups.io <bsneed1@...> wrote:

Thanks Sabine but highly unlikely it is a bad coax connection...it lasted only 20 seconds and spectrogram returned to normal and whatever it was never occurred again.
?
Thanks for looking John..the solar event report showed nothing anomalous for that time...
?
To be filed under "One of life's little mysteries".
....bill.....
?
Re: Solar Event 22 March 2025, Prospect, ME

 

It could have been a close-by radio transmitter which saturated and desensed the receiver.

Dave - W?LEV



Virus-free.


On Sun, Mar 23, 2025 at 4:38?PM bsneed1 via <bsneed1=[email protected]> wrote:
Thanks Sabine but highly unlikely it is a bad coax connection...it lasted only 20 seconds and spectrogram returned to normal and whatever it was never occurred again.
?
Thanks for looking John..the solar event report showed nothing anomalous for that time...
?
To be filed under "One of life's little mysteries".
....bill.....
?



--
Dave - W?LEV
Re: Solar Event 22 March 2025, Prospect, ME

 

Thanks Sabine but highly unlikely it is a bad coax connection...it lasted only 20 seconds and spectrogram returned to normal and whatever it was never occurred again.
?
Thanks for looking John..the solar event report showed nothing anomalous for that time...
?
To be filed under "One of life's little mysteries".
....bill.....
?
Re: 22 Mar 2025 Dead Band Heliotown

 

The view into the Total Perspective Vortex always blows me away.
--

Germany
Standard time: UTC +1 hour
March 14 2025 total eclipse ??? - Heliotown

 

Hmmmm.

I wonder if my spectrograms show the total lunar eclipse on March 14, 2025?

It had its penumbral phase starting at 03:57 UTC and partial phase
starting at 05:09 UTC , and totality starting at 06:26 UTC and ending at
07:31 UTC.

Two spectrograms attached.

Anyone else show this coincidence? - Tom

250314000008HeliotownECLIPSERCP.PNG
250314031515HeliotownECLIPSERCP.PNG

Re: 22 Mar 2025 Dead Band Heliotown

 

Thanks Tom. Yours looks pretty devoid of background band noise in the post-dawn hours as well.
--
Dave

On 3/23/25 10:35, Thomas Ashcraft wrote:
Hi Dave,

Here is my March 22 2025 spectrogram. Hope it helps you. - Tom


Today there was very little band noise in the morning (1200-1700 UTC ).
SWPC did
not report any X-ray flares. Also, the preceding day's band noise took
longer
than usual to decay. Was there a CME impact to the geomagnetic field today
or
yesterday? The K-index was high, but was it CME-impact high? Something
of a
mystery. Spectrograms from the 17th through 21st show the normal sunrise
onset
of band noise propagation.
Re: 22 Mar 2025 Dead Band Heliotown

 

Hi Dave,

Here is my March 22 2025 spectrogram. Hope it helps you. - Tom

Today there was very little band noise in the morning (1200-1700 UTC ).
SWPC did
not report any X-ray flares. Also, the preceding day's band noise took
longer
than usual to decay. Was there a CME impact to the geomagnetic field today
or
yesterday? The K-index was high, but was it CME-impact high? Something
of a
mystery. Spectrograms from the 17th through 21st show the normal sunrise
onset
of band noise propagation.



















250322003059HeliotownRCP.PNG
250322003059HeliotownTP.PNG

Re: Solar Event 22 March 2025, Prospect, ME

 

Hi Bill,
?
it looks more like a bad connection at the antenna feed point or at a connector. Anything with hard edges in the spectrogram is suspicious.
?
Sabine
--

Germany
Standard time: UTC +1 hour
22 Mar 2025 Early ionospheric degradation before sunset (Europe)

 

Dave already pointed this out: Something was strange within the ionosphere during the day. The band noise was low and the teepees were already there before sunset.
?
Sabine
--

Germany
Standard time: UTC +1 hour

250322050000Frenkhausen_sunrise.PNG
250322164500Frenkhausen_sunset.PNG

22 Mar 2025 Dead Band

 

¿ªÔÆÌåÓý

Today there was very little band noise in the morning (1200-1700 UTC ).? SWPC did not report any X-ray flares.? Also, the preceding day's band noise took longer than usual to decay.? Was there a CME impact to the geomagnetic field today or yesterday?? The K-index was high, but was it CME-impact high?? Something of a mystery.? Spectrograms from the 17th through 21st show the normal sunrise onset of band noise propagation.

441 - 460 of 13522