ARLA/CLUSTER: Amanhã, 11 Abril activação do ARISSAT-1

[João Gonçalves Costa]

ARISSat-1 to be Activated Aboard ISS Starting April 11

The ARISSat-1 satellite, presently still inside the ISS, will be turned on and use an external antenna to celebrate the 50th anniversary of Yuri Gagarin's first manned space flight. The transmissions will begin on Monday 11 April 2011 at 14:30 UTC and continue until 10:30 UTC on 13 April 2011. 

Due to the fact that the solar panels are covered, the satellite will be powered only by the onboard battery. The satellite will run in low power mode. This means that the transmissions will cycle ON/OFF. They will be ON for 40-60 seconds and OFF for 2 minutes. 

145.950 MHz FM Downlink:
FM transmissions will cycle between a voice ID, select telemetry values, 24 international greeting messages in 15 languages and SSTV images. One of the messages will be a conversation between Yuri Gagarin and ground control. 

145.919 MHz CW Beacon
The CW transmissions will be callsign ID, select telemetry, and callsigns of people actively involved with the ARISS program.

145.920 MHz SSB BPSK-1000 Telemetry
The BPSK transmissions will feature a new 1kBPSK protocol developed by Phil Karn, KA9Q to be readable in low signal level conditions. The BPSK data will transmit satellite telemetry. Given the low duty cycle of the spacecraft, those planning to receive the digital telemetry are encouraged to record the entire signal band using the FunCube dongle or SDR-IQ receivers. Download ARISSatTLM free ground station soundcard demodulator and display software here. <http://www.arissattlm.org/download/ARISSatTLM_050_Setup.exe>   The ARISSatTLM software user guide is available here <http://www.amsat.org/amsat-new/images/fck_images/ARISSatTLM-QuickStart%281%29.pdf> .

Note that the linear transponder will not be active during this event. Specific only to this event, planning is currently underway to provide an additional FM broadcast downlink at 437.550 MHz.

AMSAT will issue commemorative certificates to those receiving the transmissions and sending an email to gagarin  arissat1.org with your name or group, a description of what you heard and the UTC time you heard it. Recording the battery voltage values and the UTC time you received them will be especially helpful.

Listen to the podcast with Dave Jordan, AA4KN, on the air talking about ARISSat-1 on NPR's "Science Friday" <http://www.sciencefriday.com/program/archives/201104083>  program. (at the 4 min: 40 sec point)

Roscosmos has announced that the satellite will be deployed into orbit during the next EVA in July of this year.

Latest ARISSat-1 News 
Get your color ARISSat-1 Frequency Guide here. <http://www.amsat.org/amsat-new/images/fck_images/2011_ARISSat-1_Frequency_Chart%281%29.jpg> 
ARISSat-1 Presentation Slides (~1MB) <http://www.amsat.org/amsat-new/images/fck_images/ARISSat-1%20Overview%20Color.pdf> 




No dia 10 de Abril de 2011 12:15, Pedro Ribeiro <cr7abp  gmail.com> escreveu:


	A fiar pelas informações do "Heavens Above" ( http://tinyurl.com/3s92z8u ) , para a minha zona e diria para a maioria de Portugal Continental, só teremos passagens visíveis da ISS pelas madrugadas pelo que quem quiser receber alguma coisa vai ter de deixar os equipamentos ligados e a gravar ou colocar o despertador a tocar a meio da noite!!!
	
	Ver imagem anexa ou link acima.
	
	73!
	
	
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	QRA: Pedro Ribeiro // Callsign: CR7ABP // GRID Locator: IM58mr
	QTH: São Francisco, Alcochete, Portugal
	Homepage: http://www.qrz.com/db/CR7ABP
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	# HAM operation very limited by class 3 rules until April 2012  #
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-- 
António Matias 

CT1FFU - CR5A 

www.dxpatrol.com 

QRV: HF, 6m, 4m,2m,70cm,23cm
SSB, CW, MGM
DX, EME, Contest,Sat.


Fonte: ct-comunicacoes-e-tecnologias  googlegroups.com  Em nome de Antonio Matias