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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MV6RZUZWEVFTZBBGIOZEJY2A543QXAUK/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "002701c7bc2c$17251e80$0300a8c0@kc6uqh",
    "message_id_hash": "MV6RZUZWEVFTZBBGIOZEJY2A543QXAUK",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/NGS2IH3YBG353CZSYY4MJAZUFAAGABKM/?format=api",
    "sender": {
        "address": "kc6uqh (a) cox.net",
        "mailman_id": "d9201820d18047e4a2772c86bda5e111",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/d9201820d18047e4a2772c86bda5e111/emails/?format=api"
    },
    "sender_name": "kc6uqh",
    "subject": "[amsat-bb] Re: Grid Square..Physical Size??",
    "date": "2007-07-01T22:06:35Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/R2LZJTEGKRWKSKONB23H2V6KSFAODKGD/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "John,\nGood to hear from someone that knows navigation \"Minute is a Mile\", a 6000 \nfoot Nautical mile making a second 100 feet in latitude.\nOne other caviat, At the equator a \"Grid Square\" is a 2 degree longitude by \none degree latitude rectangle and is most square at 60 degrees North or \nSouth Latitude ( COS 60 degrees = 0.5).\n\nArt, KC6UQH\n----- Original Message ----- \nFrom: \"John Franke\" <[email protected]>\nTo: <[email protected]>; \"Frank A Cahoy\" <[email protected]>\nSent: Sunday, July 01, 2007 10:29 AM\nSubject: [amsat-bb] Re: Grid Square..Physical Size??\n\n\n> The area of a grid square is not uniform, it depends on your latitude. \n> The\n> \"height\" of a square formed by latitude and longitude lines is simply the\n> difference in latitude, in degrees times 60 nautical miles.  However the\n> length of a segment of a latitude line between to longitudes in nautical\n> miles is approximately the difference in longitudes times 60 times the\n> cosine of the latitude.  Only at the equator, latitude equals zero \n> degrees,\n> is length of a degree of latitude and a degree of longitude equal.  The \n> area\n> of grid squares decreases as you move north or south away from the \n> equator.\n>\n> John WA4WDL\n>\n>\n> ----- Original Message ----- \n> From: \"Frank A Cahoy\" <[email protected]>\n> To: <[email protected]>\n> Sent: Sunday, July 01, 2007 12:07 PM\n> Subject: [amsat-bb] Grid Square..Physical Size??\n>\n>\n>>\n>>\n>> Hello All,\n>>\n>> A friend and I were discussing the actual physical size of a grid square\n>> in kilometers and or miles and we cannot come up with anything positive.\n>> Can anyone reading this provide us with those actual numbers?\n>> No real argument involved.  Just a matter of curiosity.....\n>> Thank you in advance...\n>>\n>> 73 Frank, K0BLT\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 \n>> program!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>>\n>\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",
    "attachments": []
}