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[amsat-bb:72356] AO-40 Update, 2003-10-22
Position.
AO-40 is currently at ALON/ALAT = 20/0 and we continue to advance toward
45/0. We are holding the current position for the moment, but the next
jump of approximately 10 degrees (ALON ~30) will come in about another
week. At that time we will discontinue the K-band window and move the U/L
-> S2 passband window to later in the orbit, as well.
FEC.
We are running FEC on as many orbits as possible, working around the need
for pictures and other command functions. FEC mode requires loading the
IHU-2 each orbit and this is not always possible; however most orbits have
FEC active. We have modified the FEC routine to allow the option of
cycling between normal mode telemetry including message blocks and event
blocks, and FEC mode telemetry (A-blocks only). With this option, the
normal mode is currently active from 0 to 16 minutes of the hour, and the
FEC mode is active for the remainder of the hour. This allows time for
users to read the message blocks and for event blocks to be
collected. During transition between these two modes, up to 1 minute of
beacon "idling" (hex50) may be heard before the new mode starts.
--W4SM for the AO-40 Command Team
--
________________________________________________________________________
Stacey E. Mills, W4SM WWW: http://www.keplerian.com
Charlottesville, VA PGP key: http://www.keplerian.com/key
________________________________________________________________________
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