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  • [AMSAT-UK] FUNcube-1 / AO73 Update

    From AMSAT-UK via rec.radio.info Admin@21:1/5 to All on Tue Jun 14 09:17:06 2022
    XPost: uk.radio.amateur, free.uk.amateur-radio, rec.radio.info

    AMSAT-UK

    ///////////////////////////////////////////
    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 Queen’s 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 spacecraft’s orbit continues to run near the sun’s 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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