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Re: Solar smudge? 1 DEC 2024
开云体育Hi Duane and John,
Saw the same weak solar emission here. -- Dave On 12/1/24 20:37, AOL via groups.io wrote: Duane: |
Re: Ummm 1 DEC 2024
开云体育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: Observations from Grafton, WV. |
Re: ANT. VERTICAL 20 MHz.
开云体育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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Re: Solar smudge? 1 DEC 2024
Duane:
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? ? ?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:
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ANT. VERTICAL 20 MHz.
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? ------------- 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 |
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? --------- 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 |
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.? Larry K4LED On Sun, Dec 1, 2024 at 2:23?AM Jim Sky via <kh6sky=[email protected]> wrote:
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Re: 30 Nov 2024 non-Io-B / non-Io-A
That's great, Jim! You'll get your 3 dB when it's less cryogenic outside. :)
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-- Dave On 12/1/24 02:23, Jim Sky via groups.io wrote:
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Re: Io 11/30/2024 Easley, South Carolina
Thanks Dave.
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John On Saturday, November 30, 2024, 11:33 PM, Dave Typinski <davetyp@...> wrote:
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