¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
  1. Radio-Jove
  2. Messages
Expanded Topics Messages Polls
Date
Re: New dual dipole array in Maryland

 

Well Done!!!

Carl

On Wed, Apr 2, 2025 at 8:26?PM Tyson Sapre via <tyson.sapre=[email protected]> wrote:
Hi all,

Jack Ganssle and I were able to setup a dual dipole kit about an hour northeast from the Mills Cross Array historical site, far enough from Washington, D.C. and Baltimore for reduced interference. ?

Attached is a shot of a recent observation.? Any feedback would be greatly appreciated.

We ran into a file size limit in Radio Sky Spectrograph with an initial dataset.? The file was 2GB total.

What is the file size limit and is there a way to automate stop/start for file creation in RSS?

Thanks so much!

Tyson
Re: Solar event 02-04-2025

 

Well done, Huub!
?
Sabine
--

Germany
Standard time: UTC +1 hour
02 Apr 2025 Dawn and dusk

 

The ionosphere didn't really get going in the morning after a first prominent teepee arc around 06:25 UTC. In the evening, the airglow was just as quickly gone long before the sun had set.
?
Sabine
?
--

Germany
Standard time: UTC +1 hour

250402044500Frenkhausen_sunrise.PNG
250402160001Frenkhausen_sunset.PNG

New dual dipole array in Maryland

 

Hi all,

Jack Ganssle and I were able to setup a dual dipole kit about an hour northeast from the Mills Cross Array historical site, far enough from Washington, D.C. and Baltimore for reduced interference. ?

Attached is a shot of a recent observation.? Any feedback would be greatly appreciated.

We ran into a file size limit in Radio Sky Spectrograph with an initial dataset.? The file was 2GB total.

What is the file size limit and is there a way to automate stop/start for file creation in RSS?

Thanks so much!

Tyson
Solar. 02/04/2025

 

Hi
?
Solar Events Today.
?
?
Salvador

250402182943PIKIS.PNG
250402191731PIKIS.PNG
250402191731PIKISa.PNG
250402192731PIKIS.PNG
250402195732PIKIS.PNG
250402201332PIKIS.PNG
250402204932PIKIS.PNG
250402213433PIKIS.PNG
250402222933PIKIS.PNG

Solar 04/02/2025 Easley, South Carolina

 

Good evening:
? ? ?Good solar from today.

John

Solar04022025Labeled1A.PNG
Solar04022025Labeled2A.PNG
Solar04022025Labeled3A.PNG
Solar04022025Labeled4A.PNG
Solar04022025Labeled5A.PNG
Solar04022025Labeled6A.PNG
Solar04022025Labeled7A.PNG
Solar04022025Labeled8A.PNG
Solar04022025Labeled9A.PNG
Solar04022025Labeled10A.PNG
Solar04022025Labeled11A.PNG

Solar 2 APR 2025

 

Observations from Grafton, WV.
A little noise and several solar.
~Duane

250402141429Grafton-WV_Weak_Solar.PNG
250402142621Grafton-WV_WeakSolar.PNG
250402175646Grafton-WV_MediumSolar.PNG
250402183021Grafton-WV_Strong_Solar.PNG
250402183220Grafton-WV_WeakSolar.PNG
250402191648Grafton-WV_StrongSolar.PNG
250402192741Grafton-WV_WeakSolar.PNG
250402200018Grafton-WV_WeakSolar.PNG
250402201508Grafton-WV_MediumSolar.PNG
250402213807Grafton-WV_WeakSolar.PNG

Re: Solar - Apr 2, 2025 - K4LED

 

Thanks John.?
Larry


On Wed, Apr 2, 2025 at 10:53?AM AOL via <Jhcox2000=[email protected]> wrote:
Thanks Larry for the heads-up.

John




On Wednesday, April 2, 2025, 10:35 AM, Larry Dodd via <101science=[email protected]> wrote:

Solar - Apr 2, 2025
IMG_5548.jpeg

Larry K4LED

Re: 01 Apr 2025 Dawn and dusk

 

Hi Sabine,
?
Wow, this compared to the extreme band noise you caught a couple of days ago, this is realy impressive.
?
Huub

01 Apr 2025 Dawn and dusk

 

Fast response in the morning and in the evening!
?
Sabine
?
--

Germany
Standard time: UTC +1 hour

250401044500Frenkhausen_sunrise.PNG
250401164500Frenkhausen_sunset.PNG

Re: Solar - Apr 2, 2025 - K4LED

 

Thanks Larry for the heads-up.

John




On Wednesday, April 2, 2025, 10:35 AM, Larry Dodd via groups.io <101science@...> wrote:

Solar - Apr 2, 2025
IMG_5548.jpeg

Larry K4LED

Solar - Apr 2, 2025 - K4LED

 

¿ªÔÆÌåÓý

Solar - Apr 2, 2025
IMG_5548.jpeg

Larry K4LED

Solar event 02-04-2025

 

Hi,
?
A subtle solar event.
?
NOAA record:
3400 ? ? ? 1025 ? //// ? ? ?1028 ?SVI ?C ? RSP ?025-180 ? III/2 ? ? ? ? ? ? ? ??
?
?
Huub
Breda (JO21jn)

250402102819Breda _NL_.JPG
rx888mk2@JO21jn_02-04-2025.png

Re: 30 Mar 2025 Dusk and dawn

 

Hi Sabine,

Of course!? Sorry, as a newbie, every little blip on the spectrum is a new discovery and something more to learn about. :) But obviously not what we want when we¡¯re trying to tune into Radio Jove. ?

Did the overload damage your system or ruin your calibration? Maybe there¡¯s no way to prevent it if the ionosphere is being blasted. ?

It seems like the interference levels and variations in the ionosphere are changing dramatically in the short time since I¡¯ve joined the group.? Especially, the activity in Europe seems very high.


Tyson

On Tue, Apr 1, 2025 at 1:12?PM Sabine Cremer via <sc=[email protected]> wrote:
Tyson,
?
once this happens to you, it's more annoying than interesting! :-))
?
Sabine
--

Germany
Standard time: UTC +1 hour

31 Mar 2025 Dawn and dusk

 

Not so exciting.
?
Sabine
?
--

Germany
Standard time: UTC +1 hour

250331044500Frenkhausen_sunrise.PNG
250331170000Frenkhausen_sunset.PNG

Re: 30 Mar 2025 Dusk and dawn

 

Tyson,
?
once this happens to you, it's more annoying than interesting! :-))
?
Sabine
--

Germany
Standard time: UTC +1 hour

Re: 30 Mar 2025 Dusk and dawn

 

Wow! I did hear A LOT of contest on all these amateur HF ham bands via my vertical HF antenna on Sunday.? This overload is such an interesting phenomenon to see!?

On Mon, Mar 31, 2025 at 5:40?AM Sabine Cremer via <sc=[email protected]> wrote:
Extreme band noise in the 15 m amateur radio band (weekend contests?) lead to permanent ADC overload conditions around sunset.

Sabine
?
--

Germany
Standard time: UTC +1 hour

30 Mar 2025 Dusk and dawn

 

Extreme band noise in the 15 m amateur radio band (weekend contests?) lead to permanent ADC overload conditions around sunset.

Sabine
?
--

Germany
Standard time: UTC +1 hour

250330044500Frenkhausen_sunrise.PNG
250330171500Frenkhausen_sunset.PNG

Re: book

 

¿ªÔÆÌåÓý

I know the author and worked with him when he was chairman of the EE department at University of Colorado. ?I think he became president of Virginia Polytech after several good years at CU. ?A very bright individual. ?Many of the most important antenna designers came to work with him including Gupta and Collins.

-Kevin


On Mar 30, 2025, at 4:12 PM, W0LEV via <davearea51a@...> wrote:

I do not recognize the text, but I do recognize the author.?

Dave - W ?LEV

On Sun, Mar 30, 2025 at 7:49?PM Duane via <duane919=[email protected]> wrote:
Howdy,

Forgive the sidetrack from the normal conversations here. Yesterday I
went to a used book sale and picked up "Field and Wave Electromagnetics"
by David K. Cheng. I am not familiar with the book or the author but it
appears to be a college text with significant sections about radio
waves, antennas, waveguides, and other things that probably relate to
what we are doing/studying here.

Does any one here recognize the text or the author?

Thanks,
~Duane







--
Dave - W?LEV



Re: book

 

I do not recognize the text, but I do recognize the author.?

Dave - W ?LEV

On Sun, Mar 30, 2025 at 7:49?PM Duane via <duane919=[email protected]> wrote:
Howdy,

Forgive the sidetrack from the normal conversations here. Yesterday I
went to a used book sale and picked up "Field and Wave Electromagnetics"
by David K. Cheng. I am not familiar with the book or the author but it
appears to be a college text with significant sections about radio
waves, antennas, waveguides, and other things that probably relate to
what we are doing/studying here.

Does any one here recognize the text or the author?

Thanks,
~Duane







--
Dave - W?LEV


261 - 280 of 13419