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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/KWOV6XKSK7M545JAKTFZKS3REB5LW56E/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "KWOV6XKSK7M545JAKTFZKS3REB5LW56E",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/BQW3PAYL4RMYOMYBQZZTMDQVCMXJV7EO/",
    "sender": {
        "address": "wjubbels (a) gmail.com",
        "mailman_id": "3d3f4b2ab73749eea150ce913c522e3d",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/3d3f4b2ab73749eea150ce913c522e3d/emails/"
    },
    "sender_name": "Wouter Jan Ubbels",
    "subject": "[amsat-bb] Re: Delfi-C3 / DO-64 Status update October 9th 08:00 UTC",
    "date": "2008-10-09T13:27:50Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BQW3PAYL4RMYOMYBQZZTMDQVCMXJV7EO/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi all,\n\nwe have been unable to complete the command sequence for switching\nback to telemetry mode during the pass of 10:00 UTC today, our next\nopportunity is Monday Oct. 13th around 09:45 UTC, so stay tuned! In\nthe meantime, Delfi-C3 will continue to operate in transponder mode.\n\n73 on behalf of the Delfi-C3 / DO-64 team,\n\nWouter Jan Ubbels PE4WJ\n\n\n> Hi all,\n>\n> Delfi-C3 / DO-64 has now been in orbit for 164 days, and we regularly\n> command the satellite back to BPSK telemetry mode during passes over\n> our groundstation, after which the satellite reboots in linear\n> transponder mode after the next eclipse. Since the satellite does not\n> transmit any telemetry when in transponder mode, switching to BPSK\n> telemetry mode allows us to monitor housekeeping values and hence\n> assess satellite health.\n> Since we would like to gather longer datasets of housekeeping\n> telemetry, we will switch the satellite permanently to BPSK telemetry\n> mode during the coming days, i.e. the satellite will boot in this mode\n> after every eclipse. Our first opportunity is at approx. 10:00 UTC on\n> Oct. 9th (today), switching may take a couple of passes due to the\n> command sequence which is required to set this mode. We will switch\n> the satellite to \"basic mode\" in which an AX.25 frame containing\n> housekeeping telemetry is transmitted approx once every 4-5 secs, the\n> rest of the transmission is filled with idle flags. Downlink frequency\n> for this mode will be 145.930MHz, modulation is 1200bit/s BPSK.\n> Telemetry can be captured using the RASCAL software and forwarded to\n> our central servers just like during the first three months of science\n> mission, this would be greatly appreciated by the team.\n> At this moment, we do not know how long the satellite will be in this\n> mode, but it will at least be a couple of weeks. We'll keep you\n> informed on both our mission operations page at\n>\n> http://www.delfic3.nl/index.php?option=com_content&task=view&id=93&Itemid=122\n>\n> and via the AMSAT-BB.\n>\n> Best 73 on behalf of the Delfi-C3 /DO-64 team,\n>\n> Wouter Jan Ubbels PE4WJ\n>\n",
    "attachments": []
}