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Path: utzoo!watmath!clyde!akgua!mcnc!decvax!harpo!ulysses!allegra!mouton!karn
From: karn@mouton.UUCP
Newsgroups: net.ham-radio
Subject: UO-11 News
Message-ID: <33@mouton.UUCP>
Date: Mon, 14-May-84 13:49:57 EDT
Article-I.D.: mouton.33
Posted: Mon May 14 13:49:57 1984
Date-Received: Wed, 16-May-84 03:09:23 EDT
Organization: Bell Communications Research, Inc
Lines: 100

Posted: Mon  May 14, 1984   3:30 PM GMT              Msg: FGIE-1790-6513
From:   LKAYSER
To:     MSweeting, AMSAT
Subj:   We heard it!!!!!

TO TMAIL MSWEETING,AMSAT
FROM L. S. Kayser, WA3ZIA
UO11 finally heard in Ottawa!!!!!
at 1425 to 1436 Z this date UO11 was copied by VE3BNO in Ottawa. 
Congratulations all, we will start now collecting Telem 
regularly.  It has been worth the wait!
Surrey note please PRIME link wont be bsck until I return to work
around june 1.
      
Regards, Larry


Posted: Mon  May 14, 1984   4:24 PM GMT              Msg: BGIE-1790-7269
From:   LKAYSER
To:     msweeting, amsat
Subj:   Again!!! UO11 

To Msweeting,AMSAT
To PRNET ALL
From L. S. Kayser, WA3ZIA
UO11 AOS 1601, LOS 1611, strong signals, sounds good, telemetry 
follows
de Larry

Posted: Mon  May 14, 1984   5:08 PM GMT              Msg: SGIE-1790-7766
From:   MSWEETING
To:     AMSAT
Subj:   Oscar-11

  The following report was circulated within the G.B; it is
the only output we are likely to generate for a few hours.
The telemetry received so far appears very good.

Following persistent commanding from the Guildford command
station, the University of Surrey's second spacecraft,
UoSAT-Oscar-11  (UoSAT-2)  is now transmitting telemetry data
after weeks of silence.

Over the weekend of 11th to  13th  May,  dedicated  radio
amateurs  at Stanford Research  International  in  California
and  their outpost in Greenland heard very weak signals
emanating from the satellite  command RECEIVERS which,  by
their nature of operation, generate small signals on a
frequency near to that which they normally listen.  These
signals told the  University  satellite  team that their craft
was still alive, although at this time the chances of complete
recovery were not  known. Although this  observation,  the
first one confirmed since launch, did not lead directly to
recovering the satellite, it did confirm that  the orbital
predictions  provided  by  the NASA tracking organisations
were correct and that the object being tracked by the Surrey
team was indeed UoSAT-2.

This morning (14th May) at 10:24 GMT, with Dr.  Martin
Sweeting  (UoSAT project manager)  abroad  on holiday, Neville
Bean and Roger Peel, full time satellite  researchers  in  the
 Department  of   Electronic   and Electrical Engineering
continued  to  command  the satellite using its 144MHz uplink,
to no effect.  At 11:01GMT  (12:01  BST),  Neville  made
further command  attempts  on  438MHz,  and  after  a  brief
stream of initialisation commands,  the  main  UoSAT-2  beacon
 (145.825MHz)  was powered up at 11:05.

The signals from the spacecraft were as strong as the last
ones  heard from it  on  the  1st March, when it stopped
transmitting shortly after launch.  Telemetry data, from  the
initial  two  orbital  passes  over Guildford, appears  to be
very encouraging, with temperatures around -5 to 0 degrees
centigrade, as expected, and a  battery  voltage  of  14.6
volts.  The spacecraft is still spinning, but this will have
stabilised since the  previous  data  received immediately
after launch, ready for attitude control manoeuvres.  These
will  not  start  until  after  the causes of  the  11  week
silence have been investigated, a process that itself may take
many weeks in order to exercise the  caution  necessary in
this situation.

The UoSAT-2 spacecraft will be transmitting telemetry data
continuously for the next few days while initial checks are
made on the  telecommand system, but  after  this other data
formats will be generated using the spacecraft computer to
check further the spacecraft's health.

Initially, the University of Surrey is encouraging radio
amateurs  and schools used  to  collecting  data  from
UoSAT-1  to send them all the telemetry they receive from
UoSAT-2, so that the picture of its current state can be
generated as  soon  as  possible.   The  AMSAT  series  of
amateur-radio oriented satellites benefit greatly from the
thousands of receiving stations around the world who are able
to send such data back to the controlling organisation.

Roger  G8NEF