Last Week's Bulletins
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On behalf of the Board of Directors, Officers and members of AMSAT-NA, may I pass seasons greetings and the wish for a happy and peaceful New Year to all AMSAT members worldwide.
Robin Haighton, VE3FRH
[AMSAT News Service would also like to take this opportunity to wish everyone a bright and wonderful 2002!]
Command station team member Stacey Mills, W4SM, tells ANS of the latest AO-40 developments:
AO-40's schedule has been modified slightly to reflect the decreasing ALON. As expected, the satellite has lost sun sensor lock, so we are now officially in the 'dead zone'.
As the ALON for AO-40 continues to decrease, command stations have moved the scheduled events to earlier in the orbit including changes in the RUDAK window, S/K beacon and transponder off settings. Squint angles are getting quite poor in several parts of the orbit. Currently, to save power, the passbands will be turned off at various times reflecting this situation. In addition, RUDAK will be off for 4-5 days. Stay tuned for further developments.
AO-40 is experiencing some intermittent RADAR-type pulse signal interference on both L and U-band. Whether this is related to our negative ALAT or some other source is unknown. Indeed, the source of the interference, whether terrestrial or space, is unclear to the command team. Virtually all Earth footprints seem to be affected at various times, suggesting either multiple terrestrial sites or a space site as the source.
Although this interference is not noticeable on the passbands, (except perhaps for the SSTV images), it often makes commanding AO-40 very difficult. Interestingly, the V-band receiver does not seem to be affected. Accordingly, the command team may occasionally need to switch on the V-band receiver for commanding during a passband usage. This move has the effect of switching off the U-band receiver. Therefore, U-band uplinks may occasionally "go dead" due to V-band receiver commanding.
These inconveniences should be of short duration.
If stations suddenly lose the U-band uplink, check AO-40's telemetry for U-Rx off and the V-Rx on. L-band uplinks will not be affected.
Stacey Mills, W4SM
ANS also received this note from AMSAT-DL President Peter Guelzow, DB2OS:
May I take this chance to say a big thank you to our command stations, including James Miller, G3RUH; Stacey Mills, W4SM; Ian Ashley, ZL1AOX and Graham Ratcliff, VK5AGR.
Also, thank you to all those who support the command team with AO-40 telemetry, which results in keeping AO-40 operational and working. Special thanks also Paul Willmott, VP9MU, for keeping the telemetry archive and organizing the mass of received telemetry data.
Happy New Year everyone!
[ANS thanks AMSAT-NA and AMSAT-DL for this information]
AMSAT-NA's newest satellite project, known as 'Project JJ' for the past year, now has a new (and official) name.
AMSAT-NA President Robin Haighton, VE3FRH, informed ANS that effective January 1, 2002, the Project JJ satellite will officially be known as 'Eagle'.
The name was submitted by Bill Allen, W7US, of Tucson, Arizona, and was selected from a list of forty-five names submitted by twenty-nine satellite operators.
For his winning suggestion, W7US will receive a free dinner at the annual AMSAT dinner held during the Dayton Hamvention.
[ANS thanks AMSAT-NA President Robin Haighton, VE3FRH, for this information]
ANS news in brief this week includes the following:
Link to the weekly report on satellite ...
ISS . RS-12 . RS-13 . RS-15 . AO-10 . UO-11 . UO-14 . AO-16 . DO-17 . WO-18 . LO-19 . FO-20 . UO-22 . KO-23 . KO-25 . IO-26 . AO-27 . FO-29 . TO-31 . GO-32 . SO-33 . PO-34 . SO-35 . UO-36 . AO-40 . SO-41 . SO-42
Please send any amateur satellite news or reports to the ANS Editors at firstname.lastname@example.org, or to ANS Editor Dan James, NN0DJ, at email@example.com.
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This week's AMSAT News Service bulletins were edited by AMSAT News Service editor Dan James, NN0DJ.