[amsat-bb] AO-40 Update / RUDAK

["Stacey E. Mills" <w4sm@xxxxxxxxxx>]

With the improved solar angle, we now believe that we have enough power to 
activate RUDAK, GPS, and CEDEX.   Both the GPS and CEDEX experiments have 
yielded exciting preliminary data and the experimenters, including the 
folks at NASA, are anxious to gain as much additional information as 
possible.  Therefore, if all goes according to plan, the following schedule 
will be in effect for Orbit 701 and 702 (Amsat AO-40 orbit numbers as in 
telemetry, subtract 1 from recent NORAD keps).


N  QST AMSAT OSCAR-40  ***SCHEDULE S2 Downlink***    2002-05-10
     MA       036   116   120   128   190   200   240   036
     ----------1-----4-----2-----3-----5-----7-----0-----1
     MB        |  *  | S+K | S+K |     |  *  |  *  |  *  |
     RUDAK     |     |     |     |  *  |     |     |     |
     V-Rx      |     |  *  |     |  *  |     |     |  *  |
     U-Rx      |  *  |     |  *  |     |  *  |  *  |     |
     Passband  | UL1 |     |UL>SK|     | UL1 |     |     |


Note that from MA = 128 to 190, the middle beacon will be off and one or 
both RUDAK downlinks will be active.  After Orbit 702, if all software has 
been successfully loaded, the length of the RUDAK interval is scheduled to 
be decreased to MA =128 to 160.

Several stations around the world are set up to download RUDAK data.  On 
passes where active downloading is not scheduled, and images are needed for 
ALON/ALAT calculation, the RUDAK pass may be inactivated, either partially 
or completely, or the middle beacon may be activated in addition to the 
RUDAK downlink, at least temporarily, while image files are downloaded.

-- W4SM for the AO-40  Command Team



-- 
  _______________________________________________________________________
  Stacey E. Mills, W4SM    WWW:    http://www.cstone.net/~w4sm/ham1.html
   Charlottesville, VA     PGP key: http://www.cstone.net/~w4sm/key
  _______________________________________________________________________

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