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Re: High Gain and Wide Bandwidth Dipole Antenna.

 

Claudio - a few questions:? Is the orientation of the array critical with respect to Jupiter, i.e. should the 3 wires be at 90 degrees to Jupiter? Or just align it east-west with the 3 wires at the same height from the ground? Also, is the overall height important?? Finally, do the tapered ends actually come in at 45 degrees as shown?
It looks a very interesting design.
Regards,
Chris Pannell
Re: Dec 02 2024. Io-C N emissions - Heliotown

 

Hi Sabine,

I think in Tom's message it's just a non-standard abbreviation for "polarization" -- as in "left-hand circular polarization" -- also seen as "LCP" in the standard abbreviation.
--
Dave

On 12/5/24 03:10, Sabine Cremer wrote:
Great record, the N-event immediately catches the eye. Can you give a
description of what "polar" means in this context?
Sabine
--

Germany
Standard time: UTC +1 hour
Excellent paper on Jupiter N-Events

 

Here is an excellent paper on N-Events by Jim Brown, Dave Typinski and
Richard Flagg.



Tom
Re: Dec 02 2024. Io-C N emissions - Heliotown

 

Great record, the N-event immediately catches the eye. Can you give a
description of what "polar" means in this context?

Sabine

Hi Sabine,

I am not able to explain "polar" in this context. Too complex for me
unfortunately. Maybe others can help.

In the meantime I googled and found this good paper on N-Events by Jim
Brown, Dave Typinski and Richard Flagg. Hope this helps a little. - Tom
05 Dec 2024 Io-B

 

Io-B with Jupiter about +half an hour outside the antenna lobe (just missed).
?
Sabine
--

Germany
Standard time: UTC +1 hour

241204002430Frenkhausen_Io-A_.PNG
phase_plane.PNG
map.PNG

Re: 03/04 Dec 2024 Io-A

 

I will try my best.
?
Sabine
--

Germany
Standard time: UTC +1 hour
Re: Nancay trip report

 

I really enjoyed browsing through your documentation. I spent some time searching the internet to see if the strange 4 m antennas in front of the common backplane belong to the early Telefunken "Lichtenstein" RADAR and like the "W¨¹rzburg-Riese" parabolic mirror antennas were part of Nancay's legacy from a very dark time. But I found no evidence of this. I wonder what was observed in Nancay in the 4 m band?
?
Sabine
--

Germany
Standard time: UTC +1 hour
Re: Dec 02 2024. Io-C N emissions - Heliotown

 

Great record, the N-event immediately catches the eye. Can you give a description of what "polar" means in this context?
?
Sabine
--

Germany
Standard time: UTC +1 hour
04 Dec 2024 non-Io-A

 

¿ªÔÆÌåÓý

Here's some really weak (low elevation angle) non-Io-A from the 4th.? Better for US west coast / Alaska / Hawaii.
--
Dave

????




Re: Nancay trip report

 

Thanks for the trip report Dave, and pics! Very cool. - Tom

For those interested in some of the the details of the Nancay Radio
Astronomy
Field Station, here is a trip report from my visit there in 2016.

Hope you find it interesting!

,%20Typinski%20%20(SUG,%202016).pdf

Here is a photo gallery without explanatory text.



More info can be found here:



--
Dave
Dec 02 2024. Io-C N emissions - Heliotown

 

Dec 02 2024. Io-C - Heliotown. After 0900 UTC slightly dominant left
hand circular polar N- event activity. Tom

241202083606Heliotowniocn.PNG

Re: 03/04 Dec 2024 Io-A

 

¿ªÔÆÌåÓý

Sabine, you might need to add a couple more adjectives when describing "the fan heater next door".
~Duane


On 12/4/24 10:27, Sabine Cremer wrote:

Faint Io-A divided into two parts by the nasty fan heater next door.
?
Sabine
--

Germany
Standard time: UTC +1 hour
03/04 Dec 2024 Io-A

 

Faint Io-A divided into two parts by the nasty fan heater next door.
?
Sabine
--

Germany
Standard time: UTC +1 hour

241203224030Frenkhausen_Io-A__precursor.PNG
241204002430Frenkhausen_Io-A_.PNG
phase_plane.PNG
map.PNG
J241204c.png

Re: non IoA 12/03/2024 Easley, South Carolina

 

Great catches John.? Nice modulation lanes and the "Label5B" is very interesting!

Carl


On Tue, Dec 3, 2024 at 4:14?PM AOL via <Jhcox2000=[email protected]> wrote:
Good evening:
? ? ? ? ? non IoA from last evening.

? ? ?John?
Re: non IoA 12/03/2024 Easley, South Carolina

 

Thanks Jim. Plenty of non IoA to go around.

John




On Wednesday, December 4, 2024, 1:31 AM, Jim Sky via groups.io <kh6sky@...> wrote:

Nice John,
So I guess non-Io-A is a thing these days. About 400kK on your strip chart. I even saw it on the dipole.
Jim

On Tue, Dec 3, 2024 at 8:14?PM AOL via <Jhcox2000=[email protected]> wrote:
Good evening:
? ? ? ? ? non IoA from last evening.

? ? ?John?
Re: non IoA 12/03/2024 Easley, South Carolina

 

Nice John,
So I guess non-Io-A is a thing these days. About 400kK on your strip chart. I even saw it on the dipole.
Jim

On Tue, Dec 3, 2024 at 8:14?PM AOL via <Jhcox2000=[email protected]> wrote:
Good evening:
? ? ? ? ? non IoA from last evening.

? ? ?John?
03 Dec 2024 non-Io-A

 

¿ªÔÆÌåÓý

Here's some non-Io-A from the 3rd, 0245 - 0515 UTC.
--
Dave

????




non IoA 12/03/2024 Easley, South Carolina

 

Good evening:
? ? ? ? ? non IoA from last evening.

? ? ?John?

12032024.PNG
120320242.PNG
JupiternonIoA12032024Labeled1.png
JupiternonIoA12032024Labeled2.png
JupiternonIoA12032024Labeled1B.PNG
JupiternonIoA12032024Labeled2B.PNG
JupiternonIoA12032024Labeled3B.PNG
JupiternonIoA12032024Labeled4B.PNG
JupiternonIoA12032024Labeled5B.PNG
JupiternonIoA12032024Labeled6B.PNG
JupiternonIoA12032024Labeled7B.PNG
JupiternonIoA12032024Labeled8B.PNG
JupiternonIoA12032024Labeled9B.PNG
JupiternonIoA12032024Labeled10B.PNG

IO-B 2024-12-03 @ 04:06

 

Good Day all!
A VERY light trace of Io-B from my location.? Might be stronger from the west side observatories.

Carl
Alaska

Jove2024-12-03 040642.png
241203111142Carl Pajak-IoB-a.PNG
Sky2024-12-03 040604.png
241203111142Carl Pajak-IoB-b.PNG

Re: 03 Dec 2024 Non-Io-A

 

Sabine,
Great catches!! Very clear spectrograms, very nice.

Carl


On Tue, Dec 3, 2024 at 2:14?AM Sabine Cremer via <sc=[email protected]> wrote:
In the overall view, a not very spectacular recording of a non-Io-A event. Only at higher magnification interesting criss-cross patterns between Faraday lanes and ?modulation lanes do become apparent.
?
Sabine
--

Germany
Standard time: UTC +1 hour
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