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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/STLAZ4CI6D5OSUNDG3J7QJYYCAIC7YD7/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "SYXPR01MB16643988881EFE0FFA6568508DF70@SYXPR01MB1664.ausprd01.prod.outlook.com",
    "message_id_hash": "STLAZ4CI6D5OSUNDG3J7QJYYCAIC7YD7",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/STLAZ4CI6D5OSUNDG3J7QJYYCAIC7YD7/",
    "sender": {
        "address": "cjwayn (a) unsw.edu.au",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Joon Wayn Cheong",
    "subject": "[amsat-bb] Request for assistance to revive AU02 and AU03 QB50\tCubesats",
    "date": "2017-06-02T10:45:47Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I'm part of the AU02 (UNSW-EC0) and AU03 (i-INSPIRE 2) Australian team of QB50 cubesats, and I'm writing here to request for assistance from the experienced and well-equipped foreign HAM amateurs experts here.\n\nOur satellite was deployed last week and we have been unable to hear any beacons coming from it. We had several brainstorm sessions to identify possible configurations that could be changed to optimise the occurrence antenna redeployment sequence. Based on this, we devised a set of commands that reflect these changes in configurations that needs to be uplinked to the satellite. We have attempted to uplink these commands at 50W transmit power, but there's no response so far.\n\nWe strongly believe the satellite is still alive but has an undeployed antenna. As such, we require sufficient transmit gain in both transmit power and antenna gain to achieve positive uplink margin. Our problem is that we do not have the equipment to achieve the required transmit power to overcome the losses due to an unstowed configuration.\n\nWe have a recorded *.wav file that you can play through radio in FM mode to perform the uplink.\n\nRelevant technical info:\n\n-        The sat uses Nanocom ANT430 antenna that is still stowed. The stowed antenna is exposed on the outside of the spacecraft.\n\n-        The sat uses Nanocom U482C transceiver.\n\n-        The OBC might be trickling between on and off states and hence a daytime or dusk zenith pass is optimal for the uplink.\n\nOur ground station:\n\n-        21 el H and 21el V yagi configured in RHCP\n\n-        Kenwood TS-2000 in FM mode with 50W transmit power.\n\nHope you have a good weekend, and do not hesitate to contact me at [email protected]<mailto:[email protected]> if you would be willing to help. Your attention has been much appreciated..\n\nCheers,\nJoon Wayn\n\n",
    "attachments": []
}