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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/B33H5VADB6IAWO6WTQXHUFJNYC6ZPKSR/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "036401c931a5$43cea1f0$6a00a8c0@sparkys",
    "message_id_hash": "B33H5VADB6IAWO6WTQXHUFJNYC6ZPKSR",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/PQPBTQR25HT6SBNGIZFHIV2BPNHD5GSV/",
    "sender": {
        "address": "sparkycivic (a) shaw.ca",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Auke de Jong",
    "subject": "[amsat-bb] Re: DO-64/Delfi-c3 telemetry",
    "date": "2008-10-19T04:43:43Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/3VZVSFP6PAEBYZV3Z2XPBQCJZ2Q2QBCU/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I really enjoy reading about the specific construction and operation of the \nsatellites!  I really hope that the builders of this satellite, and also \nolder sats, can find reasons to express their experiences and insight into \nthese sats, so that we can learn about how they work(or don't work), \nsatisfying the scientific portion of my brain.  Sats are fun to operate when \nthey're working, but I also find them just as much fun, or maybe more, when \ntheir quirks and modes-of-failure are analysed publicly on here.\nThe archived, relatively recent discussions regarding AO-7, AO-16, and AO-40 \nhave provided me with such joy to read!\n\nPlease continue this trend.\n\n73 all\nAuke\n\n----- Original Message ----- \nFrom: \"Wouter Jan Ubbels\" <[email protected]>\nTo: \"Amsat-Bb@Amsat. Org\" <[email protected]>\nSent: Friday, October 17, 2008 1:28 AM\nSubject: [amsat-bb] Re: DO-64/Delfi-c3 telemetry\n\n\n> Hi David,\n>\n> yes, we have received your telemetry, thanks a lot for that!\n> the 145.870 and 145.930MHz are separate transmitters (which are only\n> combined just before the antennas), they are connected to the same\n> databus from the On Board Computer.\n> The drop out issue is not an issue with one of the transmitters\n> itself, but is related to the databus mentioned above, and it occurs\n> when large volumes of data are transferred. (And it is not dependent\n> on which transmitter is on).\n> Delfi-C3 is currently in basic mode, in which the datavolume no the\n> bus is relatively low since no payload data is gathered from the\n> payloads, in fact, the payloads are switched off, causing the dropout\n> issue not to occur (and it also does not occur in transponder mode).\n> This is why the downlink is still on when the satellite is over your\n> qth down under hi:)\n>\n> 73 on behalf of the Delfi-C3 / DO-64 team,\n>\n> Wouter Jan Ubbels PE4WJ\n>\n>\n> On Fri, Oct 17, 2008 at 12:57 AM, David Giles <[email protected]> wrote:\n>> Hello All,\n>>\n>> Just decoded my second set of telemetry from DO-64.  So far I have heard\n>> the 145.870 beacon every pass.  Unlike during the first 3 months when it\n>> was heard 1 pass in 10.\n>>\n>> A question for the designers - are the two beacons separate transmitters\n>> or just separate feeds to the one transmitter?  The 145.870 is far more\n>> reliable.\n>>\n>> 73 de David VK5DG\n>>\n>> _______________________________________________\n>> Sent via [email protected]. Opinions expressed are those of the author.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite \n>> program!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>>\n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n\n--------------------------------------------------------------------------------\n\n\n\nNo virus found in this incoming message.\nChecked by AVG - http://www.avg.com\nVersion: 8.0.173 / Virus Database: 270.8.1/1728 - Release Date: 10/16/2008 \n7:38 AM\n\n",
    "attachments": []
}