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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/II5PULO3ZNTPDZL7IZXOFJEPAOEDXOBT/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "CAJUhCTOf-B0PiwbcBHDt5=e21jzT2Uzio91Gt7ndhc_nC1OUuw@mail.gmail.com",
    "message_id_hash": "II5PULO3ZNTPDZL7IZXOFJEPAOEDXOBT",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/UV2Y5NQUNTLIJ2VYCVIPMOTE5FI4BVD5/",
    "sender": {
        "address": "normanlizeth (a) gmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Lizeth Norman",
    "subject": "[amsat-bb] Re: inquiry about homebrew az-el systems",
    "date": "2013-02-28T01:56:49Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/HNOSAT73TQZMIJUWOUED2AHS7H6O46BZ/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/J6VHG7W7267AMFV3KC7LYQVZFESPH4HY/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Gus and the gang,\nWhat about K5OE's array here:\nhttp://rfanat.ru/s8/P3D_yagi.htm\n\nStill think that using:\n8x4 aluminum tube stock\n1\" aluminum round stock\n1 arduino\n4 relays\na 24 v ps\nsome limit switches\nfuses, of course\ntwo of the appropriate value pots and maybe some gearing\nand a few gears, bearings and motors for the drivetrain,\nshould give us a complete -5400 or -5500 clone.\n\nNorm n3ykf\n\nOn Wed, Feb 27, 2013 at 8:30 PM, Gus <[email protected]> wrote:\n> Returning to this topic...\n>\n> I'm thinking about a rotator that can handle a small system like the Arrow,\n> or the Cushcraft A270-6s or even the A270-10s.  NOT big boomers like the KLM\n> 22/40 el CP yagis!\n>\n> So we're looking at 1½ - 2 sq. ft of windloading, and maybe 10 lbs of\n> weight.  (Including some sort of crossboom, clamps, coax and counterweights.\n> Rear mounted antennas like the Arrow will need a rear-mounted\n> counterweight.)\n>\n> Anybody qualified to say what that adds up to in terms of TORQUE required\n> from the motors?  With a little extra thrown in for a safety margin, maybe?\n>\n> I think a simple, low-cost, easily reproducible design is probably doable,\n> if we combine our ingenuity and expertise.\n>\n>\n> -- 73, de Gus 8P6SM\n> Barbados, the easternmost isle.\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",
    "attachments": []
}