Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia.
Here is when a transmission will start :
- 09:35 UTC - 05:58 UTC - 3:18 UTC
First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite)
The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower.
For help, and reports please contact us.
Happy receiving !
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Hi Christophe. What mode / duration is the picture transmission? Many thanks David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia.Here is when a transmission will start : - 09:35 UTC - 05:58 UTC - 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite)The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower.For help, and reports please contact us.Happy receiving !
| | Garanti sans virus. www.avast.com |
-----------------------------------------------------------
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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The downlink signal is RHCP.
Le 5 juin 2021 à 15:12, Matthias Bopp [email protected] a écrit :
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Julien,
Is it RHCP at the satellite? if so it means that we need LHCP at the station. Please confirm.
I intended to change my 10GHz feed to 2GHz on my 3M dish but only have RHCP 2GHz feeds, thus in case LHCP required no point of doing so.
Please advise
73
Jean Marc (3B8DU)
On Jun 5, 2021, at 6:49 PM, Julien NICOLAS [email protected] wrote:
The downlink signal is RHCP.
Le 5 juin 2021 à 15:12, Matthias Bopp [email protected] a écrit :
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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This is RHCP from earth.
Le 5 juin 2021 à 17:06, Jean Marc Momple [email protected] a écrit :
Julien,
Is it RHCP at the satellite? if so it means that we need LHCP at the station. Please confirm.
I intended to change my 10GHz feed to 2GHz on my 3M dish but only have RHCP 2GHz feeds, thus in case LHCP required no point of doing so.
Please advise
73
Jean Marc (3B8DU)
On Jun 5, 2021, at 6:49 PM, Julien NICOLAS [email protected] wrote:
The downlink signal is RHCP.
Le 5 juin 2021 à 15:12, Matthias Bopp [email protected] a écrit :
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Thanks Julien
On Jun 5, 2021, at 7:26 PM, Julien NICOLAS [email protected] wrote:
This is RHCP from earth.
Le 5 juin 2021 à 17:06, Jean Marc Momple [email protected] a écrit :
Julien,
Is it RHCP at the satellite? if so it means that we need LHCP at the station. Please confirm.
I intended to change my 10GHz feed to 2GHz on my 3M dish but only have RHCP 2GHz feeds, thus in case LHCP required no point of doing so.
Please advise
73
Jean Marc (3B8DU)
On Jun 5, 2021, at 6:49 PM, Julien NICOLAS [email protected] wrote:
The downlink signal is RHCP.
Le 5 juin 2021 à 15:12, Matthias Bopp [email protected] a écrit :
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Dear All,
I made a major error in my statement about polarization (see highlighted text in mail below).
I guess I was confused by my 3cm EME experiments as these days building feeds and a polarization control (with a stepper motor) as Dpol is quite variable between 3B8 and Europe with sudden changes. And for the past weeks always thinking the reverse automatically.
To correct IF THE SATELLITE IS TXing RHCP the ground station must be RHCP.
Thanks to Mathias DD1US to point this out to me.
Please accept my apologies for possibly misleading some.
73
Jean Marc (3B8DU)
On Jun 5, 2021, at 7:06 PM, Jean Marc Momple [email protected] wrote:
Julien,
Is it RHCP at the satellite? if so it means that we need LHCP at the station. Please confirm.
I intended to change my 10GHz feed to 2GHz on my 3M dish but only have RHCP 2GHz feeds, thus in case LHCP required no point of doing so.
Please advise
73
Jean Marc (3B8DU)
On Jun 5, 2021, at 6:49 PM, Julien NICOLAS [email protected] wrote:
The downlink signal is RHCP.
Le 5 juin 2021 à 15:12, Matthias Bopp [email protected] a écrit :
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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No problem Jean Marc. It is an easy mistake to make. The first live TV transmission between The USA and the UK via the Telstar satellite in 1962 gave very poor results. - The UK station was running the wrong sense of circular polarisation.The same transmission was received in France with much better quality. Regarding Almical-Sat: Unfortunately this mornings pass was only 12 degrees above the horizon for me, so I decided not to dust off the AO-40 downconverter on this occasion. I hope somebody had some success.
73 David
-----Original Message----- From: Jean Marc Momple [email protected] To: Julien NICOLAS [email protected] CC: [email protected] [email protected] Sent: Sun, 6 Jun 2021 11:26 Subject: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Dear All, I made a major error in my statement about polarization (see highlighted text in mail below). I guess I was confused by my 3cm EME experiments as these days building feeds and a polarization control (with a stepper motor) as Dpol is quite variable between 3B8 and Europe with sudden changes. And for the past weeks always thinking the reverse automatically. To correct IF THE SATELLITE IS TXing RHCP the ground station must be RHCP. Thanks to Mathias DD1US to point this out to me. Please accept my apologies for possibly misleading some. 73
Jean Marc (3B8DU)
On Jun 5, 2021, at 7:06 PM, Jean Marc Momple [email protected] wrote: Julien,
Is it RHCP at the satellite? if so it means that we need LHCP at the station. Please confirm.
I intended to change my 10GHz feed to 2GHz on my 3M dish but only have RHCP 2GHz feeds, thus in case LHCP required no point of doing so.
Please advise
73
Jean Marc (3B8DU)
On Jun 5, 2021, at 6:49 PM, Julien NICOLAS [email protected] wrote:
The downlink signal is RHCP.
Le 5 juin 2021 à 15:12, Matthias Bopp [email protected] a écrit :
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
-----------------------------------------------------------
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Hi David,
Myself I wake up late and them my son came for the day to the QTH, so no time to even try to change my 3cm feed to the 23cm one.
I suggest to Christopher and the AmicalSat team to give advance notice on the Amsat-BB for such experiment, say about a week so that we may be ready in time.
73
Jean Marc (3B8DU)
On Jun 6, 2021, at 3:55 PM, David G0MRF [email protected] wrote:
No problem Jean Marc.
It is an easy mistake to make. The first live TV transmission between The USA and the UK via the Telstar satellite in 1962 gave very poor results. - The UK station was running the wrong sense of circular polarisation. The same transmission was received in France with much better quality.
Regarding Almical-Sat: Unfortunately this mornings pass was only 12 degrees above the horizon for me, so I decided not to dust off the AO-40 downconverter on this occasion. I hope somebody had some success.
73
David
-----Original Message----- From: Jean Marc Momple [email protected] To: Julien NICOLAS [email protected] CC: [email protected] [email protected] Sent: Sun, 6 Jun 2021 11:26 Subject: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Dear All,
I made a major error in my statement about polarization (see highlighted text in mail below).
I guess I was confused by my 3cm EME experiments as these days building feeds and a polarization control (with a stepper motor) as Dpol is quite variable between 3B8 and Europe with sudden changes. And for the past weeks always thinking the reverse automatically.
To correct IF THE SATELLITE IS TXing RHCP the ground station must be RHCP.
Thanks to Mathias DD1US to point this out to me.
Please accept my apologies for possibly misleading some.
73
Jean Marc (3B8DU)
On Jun 5, 2021, at 7:06 PM, Jean Marc Momple <[email protected] mailto:[email protected]> wrote:
Julien,
Is it RHCP at the satellite? if so it means that we need LHCP at the station. Please confirm.
I intended to change my 10GHz feed to 2GHz on my 3M dish but only have RHCP 2GHz feeds, thus in case LHCP required no point of doing so.
Please advise
73
Jean Marc (3B8DU)
On Jun 5, 2021, at 6:49 PM, Julien NICOLAS <[email protected] mailto:[email protected]> wrote:
The downlink signal is RHCP.
Le 5 juin 2021 à 15:12, Matthias Bopp <[email protected] mailto:[email protected]> a écrit :
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de http://www.dd1us.de/
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ https://www.amsat.org/about-amsat/
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Thanks Julien
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 16:49 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
The downlink signal is RHCP.
Le 5 juin 2021 à 15:12, Matthias Bopp [email protected] a écrit :
Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS [email protected] Gesendet: Samstag, 5. Juni 2021 11:33 An: [email protected] Betreff: [AMSAT-BB] Re: Amicalsat : 6 June S-band Transmission
Hello David,
The modulation of the S-band downlink is GFSK 1Mbps. A picture transmission is about 3-5 minutes long.
Happy receiving !
Julien F4HVX
Le 5 juin 2021 à 11:14, David G0MRF via AMSAT-BB [email protected] a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr [email protected] To: Amsat-BB [email protected] Sent: Sat, 5 Jun 2021 6:23 Subject: [AMSAT-BB] Amicalsat : 6 June S-band Transmission
The 6 June amicalsat will transmit a picture above Europe, US and Asia. Here is when a transmission will start : • 09:35 UTC • 05:58 UTC • 3:18 UTC First CW is transmitted during one second, and then the frames follow. The RTC onboard is not very accurate due to high temperature change, allow up to two minutes drift on the time given. (because this is a planned task in the satellite) The transmission will occur on the S-band coordinated frequency : 2415.300 MHz Due to temperature and hardware limitation the frequency might be a little lower. For help, and reports please contact us. Happy receiving !
Garanti sans virus. www.avast.com
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
-----------------------------------------------------------
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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participants (5)
-
christophe.mcr -
David G0MRF -
Jean Marc Momple -
Julien NICOLAS -
Matthias Bopp