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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/XLFLRXNQD36PFCTOPG7RLF3LBIVYRPRJ/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "0B194866C56447A298BA40DBA032C34E@KC6UQH",
    "message_id_hash": "XLFLRXNQD36PFCTOPG7RLF3LBIVYRPRJ",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/XLFLRXNQD36PFCTOPG7RLF3LBIVYRPRJ/?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": "Art McBride",
    "subject": "[amsat-bb] Re: Lightning protection",
    "date": "2013-10-18T03:37:17Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Surface area counts ten for lightning protection. Down conductor braid ,\ncopper pipe or strap 2-3\" wide has the most conductivity. Coiling Coax in a\n3\" diameter at the base of the tower and placing a separate ground strap on\nthe coax before the coil to strip off the lightning currents will off some\ndegree of protection.\nFor ideas and knowledge visit  http://www.protectiongroup.com/Home \n\nArt,\nKC6UQH\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of K5OE\nSent: Wednesday, October 16, 2013 11:45 PM\nTo: [email protected]\nSubject: [amsat-bb] Re: Lightning protection\n\n\nK9STH wrote:\n> Sorry, but NFPA NEC (National Electrical Code) definitely requires that\nALL \n> grounding electrodes MUST be connected together!  There are VERY good\nreasons \n> for doing this...\n\nYeah, this is a requirement that has vexed designers of complex electrical\nsystems for years.\nOne solution, generally meeting this requirement, is to go ahead an utilize\nseparate ground rods\nand tie the rods together with a (large) grounding cable--usually pvc\ninsulated cable for corrosion \nprotection. In industrial installations these connections are often made so\nthey can be \ndisconnected in the event of differential currents flowing and causing\nproblems with \ncommunication/signal systems.\n\nMuch like K8BL's recommendations, I too have used #10 AWG for the ground\nfrom the rotor/mast\n to the ground rod, and hoped and prayed the lightning liked it (if ever\nneeded).  This is especially important\nfor a non-earthed installation like a tripod on a roof.  I have been\nfortunate to never having to find out...\n\n73,\nJerry, M0GOE\n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n",
    "attachments": []
}