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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/B3MC4A2LQ7DUERIKD3RSCZBW5VYL2NYS/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "B3MC4A2LQ7DUERIKD3RSCZBW5VYL2NYS",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/B3MC4A2LQ7DUERIKD3RSCZBW5VYL2NYS/",
    "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] Delfi-C3 / DO-64 status update January 2nd 2009 14:00 UTC",
    "date": "2009-01-02T14:07:12Z",
    "parent": null,
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/6IVBLKFMAQB555SGNKHWUOZ4D5OLZQEK/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi all,\n\nplease find a status update of the Delfi-C3 / DO-64 satellite below.\n\n1. On behalf of the Delfi-C3 / DO-64 team we would like to wish you\nall a very happy 2009!\n\n2. Delfi-C3 is currently operational in basic mode, transmitting housekeeping\ntelemetry at 1200Bd BPSK AX.25 on 145.870MHz. Basic mode is the \"safest\"\nmode the spacecraft can be in, since it transmits continuously and\nfurthermore commanding is easiest when in this mode. The craft has\nbeen in this mode for a while so that we can analyze a possible issue\nwith the linear transponder :(. As some of you may have noticed, the\ntransponder has been hard to access during its last weeks of\noperation, contrary to the first weeks where it performed fine. We\nhave performed a number of tests in order to assess this issue, up\ntill now it seems like the issue is in the receiver frontend. Over the\ncoming weeks, we will continue to investigate this issue, so whenever\nthe satellite is over Europe and in range of our groundstation, it may\nbe switched to transponder mode. In this mode, a CW beacon is\ntransmitted at 145.870MHz. When you hear the satellite in this mode,\nplease DO NOT transmit to the satellite until further notice. This\nwill allow us to further characterize the issue and work out a\nsolution, if possible.\n\n3. All other subsystems continue to perform fine on orbit.\n\n4. In the meantime, telemetry can still be received using the RASCAL\nsoftware package, and forwarded to our server. We have again received\na lot of frames already from various hams worldwide, thank you all for\nyour efforts! Note that the primary server at 83.138.144.157 is not\noperational, but the backup server is and will continue to be\noperational.\n\n5. During our free time at Christmas, we have implemented a number of\nimprovements / bug fixes in RASCAL, the most noticeable one being an\nimproved tuning range of the demodulator, allowing the input audio\ncarrier to be between 900 and 2300Hz, instead of 1400-1800Hz. This\nmakes tuning much easier.\nThese fixes have been implemented in RASCAL version 1.1.0, which is\navailable for download as of now from the website at:\n\nhttp://www.delfic3.nl/rascal\n\non this page, in the \"upgrading RASCAL\" paragraph, you can also find\ninstructions on how to upgrade to this newer version without losing your\noriginal settings and telemetry repository.\n\n73 on behalf of the Delfi-C3 / DO-64 team,\n\nWouter Jan Ubbels PE4WJ\n",
    "attachments": []
}