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Where is AO-40



There has been a high level of mail in recent days re: hearing AO-40.
Readers of the amsat-bb should be aware from Stacey W4SM's recent posts that
AO-40 has now entered a "drifting" phase.
The information below (prepared by W4SM) details the predicted behaviour of
AO-40 through to the middle of May.
Please note the information is on a day by day basis, not orbit by orbit.
The information is presented to assist those who are fine tuning their gear,
collecting telemetry etc.
On the subject of telemetry collection the "norm" for 100% OK blocks is for
Squint angles, 0 to 36 and 60 to 70 degrees.
I mention norm, because the above ranges of squint angles apply when the
Alon/Alat are nominally 0/0.
However during the "drifting" phase the "norm" no longer applies, specially
in respect to the "side lobe" at squint 60 to 70 degree. Good reception of
telemetry is available in the 50 to 70 degree range, but is range dependent.
There are lots of positives that can be gained during this "drifting" phase.
Every block of telemetry forwarded to  ao40-archive@amsat.org is greatly
appreciated.

Colin VK5HI (AO-40 Command Team Member)


AO-40  ATTITUDE - PRECESSION BEHAVIOR / W4SM
Mystery Effect = -17.760 degs ALON/week

DATE            	    ALON   ALAT    SA
2003  Apr  22 [Tue]   31.0   21.8  -36.6
2003  Apr  23 [Wed]   28.3   21.8  -38.9
2003  Apr  24 [Thu]   25.6   21.8  -41.0
2003  Apr  25 [Fri]   22.9   21.9  -43.0
2003  Apr  26 [Sat]   20.2   21.9  -44.8
2003  Apr  27 [Sun]   17.5   21.9  -46.4
2003  Apr  28 [Mon]   14.8   21.9  -47.8
2003  Apr  29 [Tue]   12.1   22.0  -49.0
2003  Apr  30 [Wed]    9.4   22.0  -49.9
2003  May  01 [Thu]    6.7   22.0  -50.5
2003  May  02 [Fri]    4.0   22.0  -50.8
2003  May  03 [Sat]    1.3   22.1  -50.9
2003  May  04 [Sun]  358.6   22.1  -50.6
2003  May  05 [Mon]  355.9   22.1  -50.0
2003  May  06 [Tue]  353.2   22.1  -49.2
2003  May  07 [Wed]  350.5   22.2  -48.0
2003  May  08 [Thu]  347.8   22.2  -46.7
2003  May  09 [Fri]  345.1   22.2  -45.1
2003  May  10 [Sat]  342.4   22.2  -43.3
2003  May  11 [Sun]  339.7   22.2  -41.3
2003  May  12 [Mon]  337.0   22.3  -39.2
2003  May  13 [Tue]  334.3   22.3  -36.9
2003  May  14 [Wed]  331.6   22.3  -34.6
2003  May  15 [Thu]  328.9   22.3  -32.1

----
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