AO-40 Update from AMSAT-DL

Discussion in 'Amateur Radio News' started by Guest, Dec 27, 2000.

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  1. Guest

    Guest Guest

    n9avg writes...

    "AO-40 Update
    de AMSAT-DL


    27-December-2000</p>




    <h3>IPS up &amp; running, updated Keps</h3>

    DB2OS: ZL1AOX successfully uploaded IPS and we have now first
    telemetry. We are currently investigating the telemetry to determine the status
    and healthy of the spacecraft. The spacecraft will only transmit on S-Band and
    we will not switch TX configuration to V-Band until we have a better knowledge
    of the s/c status.</p>


    DJ4ZC: A first (quick) look has revealed that some temperature
    sensors and possibly some current sensors have been lost by whatever incident
    caused the telemetry transmissions to stop. However, the power situation, in
    particular the battery voltages, look nominal.</p>


    We will now start a detailed analysis of the situation; the command stations
    will continue to follow a conservative philosophy with the primary target of not
    causing any additional damage along with retaining as much evidence as possible
    for the analysis of the incident.</p>


    Furthermore, command stations will now try to uplink the entire operational
    software package, which in particular should establish positive control over the
    power generation system. From there on, the communications capabilities of the
    spacecraft will be explored. The 2-meter transmitter is considered off limits
    for the time being (in case that it may have been damaged and thus might have
    the potential to cause the IHU to crash). The risk is too large before the WARTE-ORBITS
    and COMMAND-ASSIST programs have been updated to reflect the actual capabilities
    of the satellite available after the incident.</p>


    During the next few days we hope to learn to what extent the satellite was
    damaged and to what extent this will impact mission targets. When we have
    further analysis, we will report again.</p>


    73's, Karl, DJ4ZC

    </p>"
     
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