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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/JQDYIE5MHUT4GDT4H4FMBH22RYQBRJMX/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "JQDYIE5MHUT4GDT4H4FMBH22RYQBRJMX",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/35Y3CROQKGSY2LNTWJJ3SCANARSQVZAN/",
    "sender": {
        "address": "g7hia (a) btinternet.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "John Heath",
    "subject": "[amsat-bb] Re: Satellite Tracking?",
    "date": "2011-11-03T11:05:42Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/AZVF5A4GLJTVG5GYS2OVU3JW2XGUXQUQ/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi folks,\n\nThe Celestrak web site has some great in depth stuff on keps and tracking. \nI think most people just drop onto the site to get the keps,  but its certainly \nworth a more detailed look.\n\nA big thank you to Dr. Kelso for a great site.\n\n73 John G7HIA\n\n\n\n\n________________________________\nFrom: Geoff <[email protected]>\nTo: [email protected]\nSent: Wednesday, 2 November, 2011 21:42:08\nSubject: [amsat-bb] Satellite Tracking?\n\nOn Thu, 3 Nov 2011 04:16:13 am Armando Mercado wrote:\n> Greetings,\n>\n> Well, in all seriousness, Who would\n> like to post a set of keps for one (or\n> all) of the amateur satellites now flying\n> using the methods pioneered by\n> Karl Meinzer, DJ4ZC and James Miller,\n> G3RUH?\n>\n> I recall a few weeks ago someone\n> decrying the lack technical discussion\n> on the board.\n>\n> ...Well, here go you folks!\n>\n> Best 73's  Armando  N8IGJ\n>\nsnipped\n\nHi Armando et al,\n\nI don't know about the methods written up by Karl & James. For a long time \nI've had a project using Doppler shift curves in the back of my mind \n(the \"target\" doesn't need to cooperate). I have most of the hardware based \naround my HPSDR box and a t'bolt frequency reference. The software hasn't \neven progressed beyond ideas and algorithms. I haven't even picked a language \nor development environment (one day).\n\nI can see a very accurate Doppler shift curve being useful in the early days \nafter a multiple cubesat launch. How accurate would you need to be to \npick \"your\" cubesat from the crowd? One pass? multiple passes?\n\nAnyway that's this morning's breakfast coffee ideas from me. Have fun \ny'all :-).\n\n73 de Geoff vk2tfg (/3). \n\n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n",
    "attachments": []
}