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I0OJJ > SPACE 18.06.22 16:40l 85 Lines 4422 Bytes #999 (0) @ WW
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Subj: [AMSAT-UK] FUNcube-1 / AO73 Update
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AMSAT-UK
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FUNcube-1 / AO73 Update
Posted: 13 Jun 2022 08:19 AM PDT
https://amsat-uk.org/2022/06/13/funcube-1-ao73-update/
Many will be aware that FUNcube-1 has been transmitting a special Fitter
message to commemorate her Majesty the Queenâ€Ös Platinum Jubilee earlier
this month.
Everyone who receives this message and uploads it to the Data Warehouse
using the Dashboard can generate a certificate to remember this historic
event. The special message includes a link to a website that has the full
instructions. It is intended to keep this message active until the end of
June.
The spacecraftâ€Ös orbit continues to run near the sunâ€Ös terminator and this
is resulting in less than optimal solar power generation. The battery bus
voltage is now centering around 7.45 volts rather than the 8+ volts that we
have seen for many years. We believe that this reduced voltage level may be
due to a combination of factors, illumination levels, battery and/or solar
panel degradation or, possibly, gradual changes in some component values
within the EPS. It is also possible that the high spin/tumble rates that we
experienced over the recent months may be involved. Our thanks to to Colin
VK5HI and his team for continuing to keep track of this issue for us.
Operators may have noticed that the spacecraft is now in high power
telemetry mode when in sunlight and in receive only mode during eclipse.
Although the transponder is not currently active, with the rapid fading
presently being experienced on the downlink, the high power telemetry
setting will assist listeners to decode the data more easily.
We continue to be extremely grateful to all those stations who continue to
contribute their data to the FUNcube data warehouse. The information you
are providing is invaluable to the FUNcube to team and will greatly assist
us in managing the spacecraft through its “middle age” after more than
eight years in space!
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