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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/JHQ3WKWVV2OQXFSWURCCI5D4O7AQRG3T/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "B752C56C5C834AD3A4B7F7F0BE53D895@Franke",
    "message_id_hash": "JHQ3WKWVV2OQXFSWURCCI5D4O7AQRG3T",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/HM6I7EWKNIL2APQME4RBCJGD3HMSHC2Y/?format=api",
    "sender": {
        "address": "jmfranke (a) cox.net",
        "mailman_id": "6c3cc6aaa29f4579900a911c323147b7",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/6c3cc6aaa29f4579900a911c323147b7/emails/?format=api"
    },
    "sender_name": "jmfranke",
    "subject": "[amsat-bb] Re: GPS Time observation",
    "date": "2012-02-02T17:20:41Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/LLRAU3LBWBM65WKV4HBSR2WNUTTVXYXC/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "You will find that most handheld GPS receivers sold for casual use have a \ndisplayed time error that varies from 0 to 4 seconds. The receiver software \nwas designed with an emphasis on computing position and performing other \ntasks, such as routing, more than on displaying time. Hence the presentation \nof time is some times delayed. If time is of higher importance, then a \nspecialized GPS timing receiver is needed. Look for one that outputs a 1PPS \n(one pulse per second) signal and comes with timing software.\n\nJohn WA4WDL\n\n--------------------------------------------------\nFrom: \"George and Cheryl Abbott\" <[email protected]>\nSent: Thursday, February 02, 2012 11:57 AM\nTo: <[email protected]>; \"Vince Fiscus, KB7ADL\" <[email protected]>\nSubject: [amsat-bb] Re: GPS Time observation\n\n> I'm not sure about GPS,but I have noticed that the clock on our cable box \n> is off by up to 4 seconds at times.Customer service was not aware or \n> concerned when I let them know.\n>\n> -----Original Message----- \n> From: Vince Fiscus, KB7ADL\n> Sent: Thursday, February 02, 2012 10:28 AM\n> To: [email protected]\n> Subject: [amsat-bb] GPS Time observation\n>\n>\n> I have an old GPS unit, a Magellan explorist 210.  It's fairly accurate\n> determining position. After it has acquired about eight to ten satellites\n> the position error averages between 20 to 35 feet.   Now the question, the\n> other day I was looking at one of the information pages the unit can\n> display and on it, it gives the time in UTC. Just for fun I thought I \n> would\n> see how close the time was to WWV.  I was surprised to see the unit was\n> between one to four seconds off over various tests compared to WWV.  IS\n> this typical of all GPS units or do some display the time of day more\n> accurately?\n>\n> KB7ADL\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> 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",
    "attachments": []
}