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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/CWEZ2S7MQUJ63FWL7BBOVDLJA4BAGY2X/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "CWEZ2S7MQUJ63FWL7BBOVDLJA4BAGY2X",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/UCVPM7BZ2BKHPBP4HQLDYA7MGINPM7MM/?format=api",
    "sender": {
        "address": "zleffke (a) vt.edu",
        "mailman_id": "57a24afb1cf641f98121841e6753c12e",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/57a24afb1cf641f98121841e6753c12e/emails/?format=api"
    },
    "sender_name": "Zach Leffke",
    "subject": "Re: [amsat-bb] Arrow ll to camera tripod adapter",
    "date": "2018-02-26T14:28:21Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/M7GD4VKD4PBDOJ3F7RXD3HFBMMSTA644/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I use a piece of 1/8 in thick by 1/2in angle aluminum about a foot long \n(scrap from my metal pile, available at Lowe's/Home Depot/Ace \nHardware/etc.).  I tapped a 1/4in by 20 hole in it for the tripod camera \nmount, and then use two hose clamps to attach the foam grip portion of \nthe arrow antenna to the angle aluminum. I use pretty sturdy all \naluminum Velbon tripods (Ebay), so no counterweight needed.  If the 1/4 \nthreaded attachment isn't 'sturdy' or is difficult to get nice and \ntight, then you can get a side to side slip of the antenna around the \n1/4in tripod screw, particularly when you rotate for polarization.  To \nresolve this I added two small pieces of 1/16\" angle aluminum on the \n'underside' of the 1/8\" angle aluminum to 'grip' the front and back edge \nof the tripod 'plate.'\n\n\n-Zach, KJ4QLP\n\nResearch Associate\nAerospace Systems Lab\nTed & Karyn Hume Center for National Security & Technology\nVirginia Polytechnic Institute & State University\nWork Phone: 540-231-4174\nCell Phone: 540-808-6305\n\nOn 2/25/2018 8:43 PM, Don KB2YSI wrote:\n> I put a counter weight type setup on mine as well.  Helpful tips/ideas from\n> K3RRR & KG5CCI to make a place to attach my D74A and duplexer; they make\n> great ballast!\n>\n> 73, Don KB2YSI\n>\n> On Feb 25, 2018 19:35, \"Roy Dean\" <[email protected]> wrote:\n>\n>> I believe it comes pre-tapped with a 1/4-20 hole.    I didn't like the\n>> positioning, so I machined an aluminum \"saddle\" that bolts to boom, and\n>> that in turn is threaded onto the tripod mount.   I also machined an\n>> extension and counterweight that makes manipulating the antenna much\n>> easier.\n>>\n>>\n>>> I have had my Arrow ll antenna for a number of years now. I have seen\n>>> probably hundreds of these mounted to a camera tripod using different\n>>> methods. Does anybody have an easy design they might share?\n>>> 73's\n>>> Jim\n>>> WA5QAP\n>> _______________________________________________\n>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>> to all interested persons worldwide without requiring membership. Opinions\n>> expressed\n>> are solely those of the author, and do not reflect the official views of\n>> AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>>\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions expressed\n> are solely those of the author, and do not reflect the official views of AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n\n",
    "attachments": []
}