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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SZ4ZPJE4MRCQBI66IPL4XKFUK4UQ5ESZ/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "SZ4ZPJE4MRCQBI66IPL4XKFUK4UQ5ESZ",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/DUFREJWAWM2KUGILFHARWOABFVPVOCOY/",
    "sender": {
        "address": "gus (a) 8p6sm.net",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Gus",
    "subject": "Re: [amsat-bb] myflydream for LEO?",
    "date": "2014-07-08T18:41:34Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/DUFREJWAWM2KUGILFHARWOABFVPVOCOY/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "FPV and drone ground-station antenna trackers operate by receiving a \ncontinuous stream of live GPS location data as a part of the aircraft \ntelemetry downlink.  from this, AZ/EL data is computed and the antennas \npointed.  For satellite tracking, AZ/EL data would have to be \ncomputed/predicted as we normally do.\n\nMost of the tracking HARDWARE I've seen are small, use R/C servos and \ncarry usually patch antennas or small axial mode helix antennas.  Don't \nknow how these would handle larger antennas like even small yagis.\n\nR/C servos with high-torque output are available, but given that these \ntop-end servos can exceed US$200 per axis, it isn't clear that a design \nbased on these would offer much advantage to (say) a G5500.\n\nOn 07/08/2014 01:42 PM, Bill (W1PA) wrote:\n> Anyone aware of any projects to adapt this technology to LEO tracking?\n>\n> Bill  W1PA\n>\n> http://www.youtube.com/watch?v=SGQ-tLxafdM\n>\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\n-- \nGus 8P6SM\nThe Easternmost Isle\n\n",
    "attachments": []
}