Claudio Alberto Pérez Celeiro
---------- Forwarded message --------- De: Claudio Alberto Pérez Celeiro via <ecosanacion.interdimensional=[email protected]>Date: lun, 2 dic 2024 11:15 Subject: Re: [Radio JOVE] ANT. VERTICAL 20 MHz. To: < [email protected]> Estimado David.
Quizá por tu comentario acertado sobre las antenas verticales, también compartir que como ingeniero en radio desde hace 50 a?os, he podido investigar y practicar, que muchos de los conceptos y medidas técnicas, tanto en los circuitos electrónicos de radio, amplificación, acoplamiento de impedancias, Balun y un largo etc. no siempre (por no decir casi siempre) corresponden con la realidad práctica en el terreno de aplicación.?
He podido dise?ar, construir y comprobar, que la realidad salta con amplio margen los protocolos teóricos.?
Esto es, por lo que desde mi experiencia he hecho comunicaciones, Radioastronom?a, etc. con grandes resultados, que saltan los conceptos de protocolo técnico. Esto me ha dado siempre grandes alegrías, pues en la Ciencia,? todo es posible de una manera agradablemente? sorprendente...?
Sin más y deseando que tengáis felices e interesantes recepciones, recibid mis más sinceros deseos de digna investigación.
Un abrazo. Claudio? EA4AND?
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A very blurry view of non-Io-A. I think the nice old lady next door had her fan heater on in her bedroom.
What surprises me is that I only saw the initial phase of a Jovian breeze that Nancay recorded in epic broadness. Jupiter was at negative hour angles at every point of the event, so one would expect reception conditions to steadily improve.
?
Sabine
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Germany
Standard time: UTC +1 hour
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Re: ANT. VERTICAL 20 MHz.
Claudio Alberto Pérez Celeiro
Estimado David.
Quizá por tu comentario acertado sobre las antenas verticales, también compartir que como ingeniero en radio desde hace 50 a?os, he podido investigar y practicar, que muchos de los conceptos y medidas técnicas, tanto en los circuitos electrónicos de radio, amplificación, acoplamiento de impedancias, Balun y un largo etc. no siempre (por no decir casi siempre) corresponden con la realidad práctica en el terreno de aplicación.?
He podido dise?ar, construir y comprobar, que la realidad salta con amplio margen los protocolos teóricos.?
Esto es, por lo que desde mi experiencia he hecho comunicaciones, Radioastronom?a, etc. con grandes resultados, que saltan los conceptos de protocolo técnico. Esto me ha dado siempre grandes alegrías, pues en la Ciencia,? todo es posible de una manera agradablemente? sorprendente...?
Sin más y deseando que tengáis felices e interesantes recepciones, recibid mis más sinceros deseos de digna investigación.
Un abrazo. Claudio? EA4AND?
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Re: Recepción audio. Io-Jupiter
Claudio, I am afraid that if there is any Jupiter in the audio it is hidden by the MP3 compression algorithm.? If you have an original recording in an uncompressed format (WAV format), we might be able to hear it.
Jim On Fri, Nov 29, 2024 at 1:10?PM Claudio Alberto Pérez Celeiro via <ecosanacion.interdimensional= [email protected]> wrote:
Hola a tod@s. He recibido con muy buena se?al a nuestro amigo Júpiter, que entraba muy fuerte en la frecuencia de 17060,60 kHz.?
Comparto con vosotros está grabación.?
Claudio Alberto? Madrid. N 40°30'14.3964"? W 3°15'9.1188"
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Re: ANT. VERTICAL 20 MHz.
Claudio Alberto Pérez Celeiro
Esto es cierto teóricamente David. Sin embargo la utilizo en la mayoría de mis recepciones de Júpiter, con una muy buena respuesta.? Depende siempre de cómo de despejada esté la antena en su entorno. En mi caso está funcionando bien.?
Por eso os remití la otra antena Dipolo de triple hilo,? que rinde con una muy buena ganancia, para el que no pueda usar el Array y tenga espacio limitado.? --------- This is theoretically true David.
However I use it for most of my Jupiter receptions, with a very good response.
It always depends on how clear the antenna is in its surroundings. In my case it is working well.
That is why I sent you the other triple wire dipole antenna, which performs with a very good gain, for those who cannot use the Array and have limited space.
Claudio EA4AND?
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Re: Antenna alternatives for more constrained space and no trees/ground access
Daniel, It is possible to see/hear Jupiter on a single dipole, though you will not probably see the fainter emissions.? I am doing it right now (as I write this) at an extremely quiet location (only at night). I am seeing Jupiter Io-A mode emissions as I write this. Given you have??a wood structure with no metal roof, I think you should try the dipole in the attic.? You will need to have a quiet location, including your household RFI makers like TV or thermostats.? If your attic is wide enough you might put up a dual dipole.? I will be adding that extra 3 dB that comes with the second dipole before long.? It makes a big difference in hearing Jupiter
Jim
On Sat, Nov 30, 2024 at 12:29?PM Danielhandlin via <Danielhandlin= [email protected]> wrote:
Hello everyone:
I've been using some low-quality antennas to try to detect Jupiter but I have not had success, so looking for other ideas.?
My fundamental problem is I have no way to set up anything remotely like the Radio Jove dipole I should be using. I realize that's the "right answer", but I do not have anywhere where I could physically place one.?
My problem is this. I live in a house, but I have a somewhat annoying set of constraints:
1) My "back yard" is entirely concrete- no grass to ground anything into
2) There are also some large power lines just outside the backyard?
3) There are no trees I can tie anything to
Most everything I've read suggests I should make a dipole and either ground it or tie it to a tree, and be far away from power lines, so you see my dilemma. It may just not be possible. The best idea I've come up with is to put a portable dipole or EFHW in the attic, but I have not seen any reports of detecting the decametric emissions with such a setup.
Has anyone had success with a more compact setup or one that doesn't depends on grounds or a tree under conditions such as these?
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Re: Questions about Spectograph
Alfi, You can look at wider swaths of the observation at a time.? After loading a chart change the value in the small box on the upper right that is labeled X-factor.? If the X-Factor is set to 1 then the chart is at the highest time resolution.? Changing it to some higher number will cause the displayed area to be greater.? If your chart now take covers 5 minutes at X factor 1, it will cover 1 hour with it set to 12.?
The manual for all operations in Radio-Sky Spectrograph can be seen by pressing F1.
Jim
Is there a quick way to know if we get a solar burst on the spectograph without having to check one by one per 5 minutes? because the data I take is for 24 hours, thank you.
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Re: Solar smudge? 1 DEC 2024
Hi Duane and John,
Saw the same weak solar emission here.
--
Dave
On 12/1/24 20:37, AOL via groups.io wrote:
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Duane:
? ? ?I saw the same smudge. Also showed a small spike?on
SkyPipe. I decided not to publish due to the small size. If you
like I can publish tomorrow evening since I have already started
my run tonight.
? ? ? I do not know what the other object is.
John
On
Sunday, December 1, 2024, 7:29 PM, Duane via groups.io
<duane919@...> wrote:
Observations from Grafton, WV.
Pretty small solar?
~Duane
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Hi Duane,
Doubtful of cosmic origin; most likely some kind of RFI.? Saw
nothing here at the time.
--
Dave
On 12/1/24 19:30, Duane via groups.io wrote:
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Observations from Grafton, WV.
From my location Jupiter is below the horizon at this time.
The Sun is just on (maybe just over) the horizon at this time.
What is the signal slanting the wrong way?
One more time, with the images attached this time !
~Duane
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Re: ANT. VERTICAL 20 MHz.
A vertical antenna is a poor choice for Radio Jove
reception.? A vertical theoretically has a null overhead, which is
the opposite of what you want.
And in any case a capacity hat isn't going to discriminate against
local interference.? In fact, a vertical antenna is again a poor
choice in general for avoiding local RFI since the bulk of local
RFI tends to be vertically polarized.
A vertical (capacity hat or not) is indeed a decent antenna for
long distance terrestrial communications because (depending upon
local ground conductivity) it has a low angle of
radiation/reception.? That's not what you want for Radio Jove,
however.
Dave ? AB7E
?
On 12/1/2024 4:36 PM, Claudio Alberto
Pérez Celeiro via groups.io wrote:
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Queridos amigos, esta antena vertical, os dará
muchas satisfacciones para Radioastronom?a, no teniendo mucho
sitio en nuestra casa.?
El "sombrero" capacitivo le proporciona
eliminación de interferencias locales y le permite recibir a
más larga distancia.?
La dise?é para que podáis tener alternativas en
vuestras experiencias JOVE.?
Un abrazo a tod@s.?
Claudio?
Madrid?
EA4AND?
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Dear friends, this vertical antenna will give
you many satisfactions for Radio Astronomy, not taking up
much space in our house.?
The capacitive "hat" provides elimination of
local interference and allows you to receive at a longer
distance.?
I designed it so that you can have
alternatives in your JOVE experiences.?
A hug to all.?
Claudio?
Madrid?
EA4AND
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Re: Solar smudge? 1 DEC 2024
Duane: ? ? ?I saw the same smudge. Also showed a small spike?on SkyPipe. I decided not to publish due to the small size. If you like I can publish tomorrow evening since I have already started my run tonight. ? ? ? I do not know what the other object is.
On Sunday, December 1, 2024, 7:29 PM, Duane via groups.io <duane919@...> wrote: Observations from Grafton, WV.
Pretty small solar?
~Duane
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Observations from Grafton, WV.
From my location Jupiter is below the horizon at this time.
The Sun is just on (maybe just over) the horizon at this time.
What is the signal slanting the wrong way?
One more time, with the images attached this time !
~Duane
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Observations from Grafton, WV.
Pretty small solar?
~Duane
|
Observations from Grafton, WV.
From my location Jupiter is below the horizon at this time.
The Sun is just on (maybe just over) the horizon at this time.
What is the signal slanting the wrong way?
~Duane
|
Claudio Alberto Pérez Celeiro
Queridos amigos, esta antena vertical, os dará muchas satisfacciones para Radioastronom?a, no teniendo mucho sitio en nuestra casa.?
El "sombrero" capacitivo le proporciona eliminación de interferencias locales y le permite recibir a más larga distancia.?
La dise?é para que podáis tener alternativas en vuestras experiencias JOVE.?
Un abrazo a tod@s.?
Claudio? Madrid? EA4AND?
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Dear friends, this vertical antenna will give you many satisfactions for Radio Astronomy, not taking up much space in our house.?
The capacitive "hat" provides elimination of local interference and allows you to receive at a longer distance.?
I designed it so that you can have alternatives in your JOVE experiences.?
A hug to all.?
Claudio?
Madrid?
EA4AND
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COPIA LIMPIA DE DIBUJO DE ANTENA DE ALTA GANANCIA EA4AND.
Claudio Alberto Pérez Celeiro
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High Gain and Wide Bandwidth Dipole Antenna.
Claudio Alberto Pérez Celeiro
Queridos amigos:? Como se que hay dificultades, en la instalación de un Array de dos dipolos Jove en muchos casos, por el sitio que podamos tener, he dise?ado esta antena, la cual la podéis poner en horizontal con un Balun 1:1 al Receptor o bien con sólo un mástil y colocarla en "V" invertida a 90° aproximadamente, con lo cual no necesita Balun.?
Deseo de corazón que pueda ser una solución efectiva para aquellos que no tienen mucho espacio en sus casas.
Un abrazo? Claudio Alberto? NR - Madrid EA4AND?
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Dear friends:
As I know that there are difficulties in installing a Jove two-dipole array in many cases, due to the space we may have, I have designed this antenna, which you can put horizontally with a 1:1 Balun to the Receiver or with just a mast and place it in an inverted "V" at approximately 90°, which means it does not need a Balun.
I sincerely hope that it can be an effective solution for those who do not have much space in their homes.
A hug
Claudio Alberto NR - Madrid EA4AND
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Re: 30 Nov 2024 non-Io-B / non-Io-A
Jim Congratulations. Good job. Cold here also with sub freezing nights. Hope you can muster the energy to breach the 3dB threshold. Ha! You need a submarine to ford the river.? I’ve cleared some trees here and working on brush around the antenna here. But have a lot more to do. Had a short power failure here yesterday. At least now I can get the stream restored fairly fast. The two UPS’s usually keep the internet and computer going but not always. Dave, I’ve been working on the R-390’s and about 1/2 way through restoration. Quite a journey. Thanks. Jim, wish you the best with your observatory.?
Hi Dave, I just got my dipole across the river working again - bad coax.? But to my surprise I did see some of the Non-Io-A.? Went to Larry's YouTube feed and it was coming through there quite strong.? Nothing Earth shattering? to report - just some evidence that a dipole is better than nothing.? I have the stuff to?turn it into a dual dipole but it just?turned frigid outside and I require?more than 3dB of incentive to overcome that.
The picture has been?normalized to remove the background.. Jim.??
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Re: Questions about Spectograph
Hi,
?
Ah yes, well I use ftp to download previous daily reports.
?
The link: ftp.swpc.noaa.gov
The path to the data: /pub/indices/events
?
For login credentials check this
?
Huub
?
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Sabine Cremer
Dave Typinski
Larry Dodd