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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/4YBCLVUNOZSKWVGVXZWGDWN4A7FZ25XQ/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "4YBCLVUNOZSKWVGVXZWGDWN4A7FZ25XQ",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/4YBCLVUNOZSKWVGVXZWGDWN4A7FZ25XQ/?format=api",
    "sender": {
        "address": "ve9qrp (a) gmail.com",
        "mailman_id": "4d6061838db34aba9a1c4722addebfaf",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/4d6061838db34aba9a1c4722addebfaf/emails/?format=api"
    },
    "sender_name": "Bruce Robertson",
    "subject": "[amsat-bb] Re: video: program to burn TLEs onto doppler-tuning\tmicrocontroller",
    "date": "2010-07-26T12:23:17Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Thanks, Joe --\n\nI guess an important distinction is that the trakbox did rotor\ncontrol, and my project doesn't. Rather, it aims to be useful to a\nperson in the field using hand-held equipment. In fact, ultimately,\nI'd like to see code like this built into the firmware of an HT like\nthe TH-D7A.\n\n73,\nBruce\nVE9QRP\n\nOn Mon, Jul 26, 2010 at 12:45 AM, Gary \"Joe\" Mayfield\n<[email protected]> wrote:\n> Cool!  Trakbox lives again!!!\n >\n> 73,\n> Joe kk0sd\n>\n> -----Original Message-----\n> From: [email protected] [mailto:[email protected]] On\n> Behalf Of Bruce Robertson\n> Sent: Sunday, July 25, 2010 8:51 PM\n> To: AMSAT-BB\n> Subject: [amsat-bb] video: program to burn TLEs onto doppler-tuning\n> microcontroller\n>\n> Some of you know about my qrptracker project, which is aiming at a\n> compact, microcontroller-based doppler tuning device for use in the\n> field. My previous videos showed an FT-817 controlled by this device\n> and using a small speaker and CW to announce the bird. I've just\n> posted a video to YouTube at http://www.youtube.com/user/VE9QRP that\n> demonstrates the program that is used to load TLEs into the\n> microcontroller, sync the tracker, etc. It also shows the\n> microcontroller tuning a TH-D7A handheld, and it shows a LCD display.\n> My goal now is to make an altoids-tin-sized package that connects to a\n> TH-D7A or an FT-817, has an LCD display and provides doppler tuning.\n>\n> In further developments in this project,  I've worked on porting the\n> SGP4 algorithm to the ATMega644p. (Currently the project uses the\n> Plan13 algorithm.)It's not an exact port, since the 'double' data type\n> is not the same length, but with some careful hand-crafting, we're\n> getting accuracies down to 1/10th of a degree lat and long.\n> sub-satellite point.\n>\n> 73, Bruce\n> VE9QRP\n>\n> --\n> http://ve9qrp.blogspot.com\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> _______________________________________________\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\n\n\n--\nhttp://ve9qrp.blogspot.com\n\n\n\n-- \nhttp://ve9qrp.blogspot.com\n\n",
    "attachments": []
}