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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/26JE4O3NAJTRBVLPA3MDHEKG2HNUXKTX/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "26JE4O3NAJTRBVLPA3MDHEKG2HNUXKTX",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/I6F7C2B6UHG54KSKHIRRN5NQ2RIYO22Z/?format=api",
    "sender": {
        "address": "kd0ar (a) sbcglobal.net",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Michael Heim",
    "subject": "[amsat-bb] Re: Cell Phone in Spce",
    "date": "2009-02-04T19:48:08Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/I6F7C2B6UHG54KSKHIRRN5NQ2RIYO22Z/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/TFF75N3GP7WZGUX2V2I6WIFEVJBJSDBA/?format=api",
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BSLMIFF7T34UXI3MCAJ6MX3BXUN3SP5W/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I recall doing a broadcast remote where I was engineering the remote from a single engine aircraft.  At about 5000 feet or so, I lost all cellphone functionality because I was getting into  too many cell sites at the same time and the system locked me out (thats the best explanation I could come up with).  Even if there was enough signal from that distance, I doubt it would work for that reason.\n\nMichael Heim\nChief Engineer, Forever Broadcasting\nNew Castle PA\nWKST  WJST  WWGY\n814-671-0666\nARS KD0AR\n\n\n--- On Tue, 2/3/09, Tony Langdon <[email protected]> wrote:\n\n> From: Tony Langdon <[email protected]>\n> Subject: [amsat-bb] Re: Cell Phone in Spce\n> To: \"Kelly Martin\" <[email protected]>, \"Dave\" <[email protected]>\n> Cc: [email protected]\n> Date: Tuesday, February 3, 2009, 9:51 PM\n> At 01:33 PM 2/4/2009, Kelly Martin wrote:\n> >Cell phones need about -95 dBm received to work at all\n> (and really at\n> >-95 dBm about all you get is network beaconing, with no\n> ability to\n> >actually place a call).  Typical cell transmit powers\n> rarely go past\n> >one watt, and I think the cell base stations rarely go\n> much over ten\n> >watts (per channel).  I think you'll find that\n> there's too much path\n> >loss for that to work to even LEO, notwithstanding the\n> fact that cell\n> >tower antennas typically have radiation patterns that\n> send virtually\n> >all the signal into terrain, that being where the cell\n> phones are.\n> \n> Some systems (GSM being the main example) have a distance\n> limitation, \n> of how far you can go from the base station, without losing\n> sync due \n> to propagation delay.  Suffice to say this is well short of\n> any LEO, \n> even the ISS.\n> \n> 73 de VK3JED / VK3IRL\n> http://vkradio.com\n> \n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those\n> of the author.\n> Not an AMSAT-NA member? Join now to support the amateur\n> satellite program!\n> Subscription settings:\n> http://amsat.org/mailman/listinfo/amsat-bb\n",
    "attachments": []
}