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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MASTTGASTGUCLIVSIHO25MMRN2H4A4AG/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "CAJUhCTML24EgZMF8wugJ4UGrSpthjrNRpCw4h8_HQxCnLHAv4g@mail.gmail.com",
    "message_id_hash": "MASTTGASTGUCLIVSIHO25MMRN2H4A4AG",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/VDLZZMRX2PYDC2ZVRDF2F442XKVGJG42/?format=api",
    "sender": {
        "address": "normanlizeth (a) gmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Norm n3ykf",
    "subject": "Re: [amsat-bb] Az-El Rotors",
    "date": "2016-01-25T14:57:38Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/JI54FJ6WAW4MIKPF5MUM5ACGC223INBS/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Check out K3NG's rotator. Direct replacement for the LVB tracker, or\nbuild the control box around it, as well. So far I've built 5. One is\na G-5400 portable with GPS and the other (s) drive the G-5500. One\nversion took 2.5 hours. Did take a shortcut there. Cut the tail off\nthe LVB tracker. No cable to build! Two sit on the bench. Plug either\none into a control box and satpc32, then track the birds!!\n\n\nBuilding the actual rotators is a pain. Very doable, though. Have one\nin the corner. Bought Geckodrives because all others are fodder for\nthe dumpster. Anything real needs (moderately) big gear reduction\ndrives. Alibaba is yor friend.\n\nLVB tracker replacement=35$ or less + enclosure. See Youtube.\n\nOn Mon, Jan 25, 2016 at 9:12 AM, Steven Kalmar <[email protected]> wrote:\n> Satnogs has a pretty good AZ/EL rotator design -\n> https://satnogs.org/documentation/hardware/\n>\n> I'm not sure how well it holds up in a permanent installation.  I started\n> building it but ended up making my own design.\n>\n>\n> Steve\n> KD8QWT\n>\n> On Mon, Jan 25, 2016 at 8:57 AM, JoAnne Maenpaa <[email protected]> wrote:\n>\n>> Hi Fred,\n>>\n>> > ... starting with a small single antenna with both 2m and 70cm on\n>> > it (i.e. Arrow or other) ...\n>>\n>> I've found that an azimuth-only rotor with a fixed elevation of 20° or so\n>> works well enough for most of what I do with LEO satellites. I got my rotor\n>> from ebay for $20. It is a primitive setup - manual tracking. Much of the\n>> time I prefer using an Arrow antenna.\n>>\n>> If you are looking for rotor projects there have been two designs\n>> published over the past year or so in the AMSAT Journal. Here is some\n>> information you can use to find out more about these:\n>>\n>> The AMSAT store has the printed circuit board for WA8SME's WRAPS\n>> inexpensive, portable az-el rotor system. See http://store.amsat.org and\n>> look for the \"WRAPS Tracker Circuit Board\". There is also a link to the\n>> article by Mark, WA8SME.\n>>\n>> Bob, KI4SBL, wrote an article about his homebrew az-el rotor system,\n>> \"CNCTRK – A LinuxCNC Based Satellite Tracking System\", for the AMSAT\n>> Journal. Bob has details of this project and the parts he sells along with\n>> a PDF of the article posted on his web site:\n>> http://ki4sbl.dodropin.org/CNCTRK/\n>>\n>> --\n>> 73 de JoAnne K9JKM\n>> [email protected]\n>>\n>>\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>\n>\n> --\n> \"In a time of universal deceit, telling the truth becomes an act of\n> rebellion.\"\n> --George Orwell\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",
    "attachments": []
}