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<DIV><FONT face=Arial size=2>Freitas,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Um abraço,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Estão ainda desenvolver e testar o protótipo do
novo transponder (digital) de tecnologia SDR, que mais tarde fará parte do
satélite EAGLE.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>É um sistema de tecnologia, igual ao que a AMSAT-CT
(AMRAD) está a estudar aplicando o DSP, e que tem por fim criar um novo
modelo, para aplicar no projecto do satélite CamõeSat-1. Este sistema modular de
FI, será integrado com diferentes up e down converters, que irão substituir
os actuais 3 transponderes lineares que desenvolvemos e temos a funcionar, de
1296-435 (2 W); 145-435 (12 W ou 80 W) e 435-145 (8 W).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Conforme falámos há tempos, um destes transponders
lineares, irá ser lançado num balão SimSat, possivelmente o mais pequeno de 1.2
GHz.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Este transponder de SDR, </FONT><FONT
face=Arial size=2>é um trabalho realizado pelo CS5CEP, do Centro Espacial
Português, sedeado no IST-Tagus, no Parque de Ciência e Tecnologia de Oeiras,
fundado pela AMRAD (AMSAT-CT) e o IST em 2005.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>73, Mariano</FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=ct1fzc@gmail.com href="mailto:ct1fzc@gmail.com">CT1FZC - Carlos
Freitas</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=listas_ct1eat@sapo.pt
href="mailto:listas_ct1eat@sapo.pt">Francisco Costa, CT1EAT</A> ; <A
title=cluster@radio-amador.net href="mailto:cluster@radio-amador.net">Resumo
Noticioso Electrónico ARLA</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, June 28, 2007 9:21
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: ARLA/CLUSTER: ISS...</DIV>
<DIV><BR></DIV>
<DIV>Francisco Costa Boas!!</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Terás alguma informação para quando o satélite P3-Express estará
operacional?</DIV>
<DIV><A
href="http://www.amsat.org/amsat-new/express/">http://www.amsat.org/amsat-new/express/</A></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Um abraço...</DIV>
<DIV>73, CT1FZC</DIV>
<DIV>Freitas</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><BR><BR> </DIV>
<DIV><SPAN class=gmail_quote>2007/6/28, Francisco Costa, CT1EAT <<A
href="mailto:listas_ct1eat@sapo.pt">listas_ct1eat@sapo.pt</A>>:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Olá
Salomão<BR><BR>> Algum dos Colegas tem escutado as frequências de
"downlink" da ISS?<BR><BR>Para saber o "status" actual das actividades da
ISS,<BR>veja esta página: <A
href="http://www.issfanclub.com/">http://www.issfanclub.com/</A> no lado
direito.<BR><BR><BR>> A razão de ser das mesmas é a seguinte, desde
sempre que conseguia escutar <BR>> o<BR>> beacon de APRS da Estação,
mas de há alguns meses a esta parte e mesmo com<BR>> órbitas muito
favoráveis, não consigo obter nenhum sinal.<BR><BR>O problema não é seu, mas
do rádio da ISS que está desconfigurado, <BR>e ainda não foi possivel repor
a configuração.<BR>Para mais info, leia o report do Frank Baur.<BR><BR>73
F.Costa, CT1EAT<BR><A
href="http://www.qsl.net/ct1eat">www.qsl.net/ct1eat</A><BR><BR><BR>-----
Original Message ----- <BR>From: "Frank H. Bauer" <<A
href="mailto:ka3hdo@comcast.net">ka3hdo@comcast.net</A>><BR>To: <<A
href="mailto:sarex@AMSAT.Org">sarex@AMSAT.Org</A>><BR>Sent: Wednesday,
April 25, 2007 2:45 AM<BR>Subject: [sarex] ARISS Status Report April 24,
2007 <BR><BR><BR>> ISS Ham Radio Enthusiasts,<BR>><BR>> I wanted to
provide a progress report on the ISS Ham Radio activities.<BR>>
And<BR>> to address some questions that have come up related to ARISS
operations <BR>> and<BR>> equipment upgrade and
repair.<BR>><BR>> With the successful Shuttle return to flight, the
International Space<BR>> Station Program construction has moved into high
gear with delivery and<BR>> assembly of new ISS modules. If
all goes well, the new European Columbus <BR>> Module and Japanese Kibo
module will be installed on ISS in the next 12<BR>>
months. This substantial workload on the crew is impacting
ARISS<BR>> operations directly.<BR>><BR>> The launching of any new
or replacement radios or computers has been <BR>> significantly curtailed
due to the extremely limited upmass<BR>> capability. There are
just too many higher priority activities from an<BR>> international space
agency perspective and frankly we are a lower <BR>>
priority. The extra workload on the crew has taken its toll on
ARISS -<BR>> they have had very little extra time for Amateur Radio
activities beyond<BR>> school contacts. This is somewhat
frustrating to the general ham radio <BR>> community and the ARISS
International Team, though the team is pleased<BR>> that<BR>> the crew
has been able to speak so often with youth groups worldwide,<BR>> piquing
their interest in Amateur Radio, science, technology, engineering <BR>>
and math.<BR>><BR>> The ARISS team had been hopeful that Charles
Simonyi would have been able<BR>> to restore the Kenwood D700 radio
system to full functionality after an<BR>> accidental reprogramming of
the radio occurred near the end of Exp 13. <BR>> The<BR>> ARISS team
worked diligently with the Simonyi team to get Charles<BR>>
licensed, trained, and prepared to perform the Kenwood<BR>>
reprogramming. Unfortunately, the ARISS team hit a major hurdle a
few <BR>> weeks before Charles' launch. We learned that
additional software<BR>> certification steps were required to allow the
reprogramming software to<BR>> be<BR>> used on the ISS
computers. Through heroic efforts by the team, final <BR>>
software certification was successfully completed. Unfortunately,
this<BR>> was<BR>> completed only a few days before Charles' return
from space. As a result,<BR>> the ARISS team was informed by
the mission control team and some of our <BR>> international team
partners that it there was insufficient time to allow<BR>> Charles to
complete the restoration. Thus, the Kenwood restoration
was<BR>> not<BR>> completed by Charles. This last minute
hiccup in software certification <BR>> was not predictable. So
there was no way the ARISS team could have better<BR>> prepared for
Charles' flight.<BR>><BR>> At this point in time, it appears that a
full restoration will require a<BR>> substantial, concerted effort with
full cooperation from our international <BR>> colleagues and the Russian
and US space agencies. We need to make sure<BR>> that all
components necessary for a successful reprogramming are<BR>> identified,
purchased (if necessary), certified, tested and flown together <BR>>
before the radio will be fully restored. Realizing this will be
especially<BR>> challenging due to the upmass issue I described
above. This will likely<BR>> take several months to accomplish
as the team will have to begin from <BR>> square one. In the short term,
requests for some investigative analysis by<BR>> the crew will be
made. This will enable the ARISS team to determine if<BR>>
the<BR>> radio can be partially restored to provide some of the
unattended <BR>> operations that it once provided.<BR>><BR>> With
Charles' successful landing, we have started down this new
path. We<BR>> will continue to keep you informed of our
progress.<BR>><BR>> In closing, we are aggressively working this
issue, despite several <BR>> setbacks. While our plans to have
Charles reprogram the radio were<BR>> thwarted, we were happy that he
could speak to so many hams around the<BR>> world during his short
stay. And capture the imagination of students <BR>> around the
globe.<BR>><BR>> On behalf of the ARISS team, we thank all of you for
your interest and<BR>> enthusiasm in Ham Radio on the
ISS.<BR>><BR>> 73, Frank H. Bauer, KA3HDO<BR>> ARISS
International Chairman <BR>> AMSAT-NA V.P. for Human Spaceflight
Programs<BR><BR><BR>_______________________________________________<BR>CLUSTER
mailing list<BR><A
href="mailto:CLUSTER@radio-amador.net">CLUSTER@radio-amador.net</A><BR><A
href="http://radio-amador.net/cgi-bin/mailman/listinfo/cluster">http://radio-amador.net/cgi-bin/mailman/listinfo/cluster</A><BR></BLOCKQUOTE></DIV><BR><BR
clear=all><BR>-- <BR>Carlos Freitas<BR>CT1FZC
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