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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/WBF54N7FU6LPQLWJFH2W7AJTGMRC6HDG/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "WBF54N7FU6LPQLWJFH2W7AJTGMRC6HDG",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/WBF54N7FU6LPQLWJFH2W7AJTGMRC6HDG/",
    "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 29th 2009 10:00\tUTC",
    "date": "2009-01-29T10:42:48Z",
    "parent": null,
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/NYVKOIR3GPWYWXLNGK2KT2POFIPKRERH/",
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/I3YDDMAMCNGAAVH7XBQJ3FYBBV4MYDSG/"
    ],
    "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. Following our earlier reports about the transponder issue, we sadly\nhave had to conclude that the linear transponder is not operational\nanymore. Delfi-C3 / DO-64 has been in basic mode (a mode in which only\nhousekeeping mode is transmitted) for a number of months in order to\ninvestigate this issue.\nFollowing our extensive tests, we have decided to switch the satellite\nback to science mode, which from a mission point of view is the most\nuseful mode since it yields valuable science data about the Thin Film\nSolar Cell payload and the Autonomous Wireless Sun Sensor payload.\n\n2. Today during the 09:33 UTC pass we have successfully commanded the\nsatellite to science mode using the primary downlink at 145.870MHz,\n1200Bd AX.25 BPSK and stored this mode in the on board data base.\nSubsequent database dumps indicated that the new settings have been\nstored successfully.\nThis mode is recognized by the higher rate of telemetry frames on the\ndownlink, 3 payload frames are transmitted followed by 1 housekeeping\nframe.\nNote that the satellite boots in this mode on 145.870MHz whenever she\ncomes out of eclipse (no battery on board). It is possible, that the\nsatellite decides to use the 145.930 MHz backup downlink. If you hear\nDelfi-C3 / DO-64 on this frequency, your reports are highly\nappreciated!\n\n3. Contrary to basic mode, in which the downlink is on continuously,\ndownlink drop outs are likely to occur in science mode. Therefore, it\nis possible that the satellite is not heard, and due to the orbit, the\nchances that the downlink is still on over VK / ZL are slim, sorry to\nall of you down under! However, if you hear the satellite, your\nreports are very much appreciated! We regularly post the satellite\nstatus on the Oscar status page at http://oscar.dcarr.org/ and\nencourage you to do so as well.\n\n4. Telemetry can be received using the RASCAL program, which is\navailable at http://www.delfic3.nl/rascal At this moment, the total\namount of frames has exceeded the 500000 mark, more precisely 504364\n(which amounts to approx. 72.14 MB), a truly magnificent number.\nThanks once again to all of you receiving and submitting telemetry!\nWhen in science mode, the IV curves of the Thin Film Solar Cell\npayload can be viewed by clicking \"options\" --> \"show IV curves\".\n\nBest 73 on behalf of the Delfi-C3 / DO-64 team,\n\nWouter Jan Ubbels PE4WJ\n",
    "attachments": []
}