Hello Julien,
what is the polarization of the downlink signal ?
Regards
Matthias
www.dd1us.de
-----Ursprüngliche Nachricht----- Von: Julien NICOLAS contact@juliennicolas.com Gesendet: Samstag, 5. Juni 2021 11:33 An: amsat-bb@amsat.org 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 amsat-bb@amsat.org a écrit :
Hi Christophe.
What mode / duration is the picture transmission?
Many thanks
David G0MRF
-----Original Message----- From: christophe.mcr christophe.mcr@gmail.com To: Amsat-BB amsat-bb@amsat.org 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
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