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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/LV2GBG3B7S43XLRKGJ2FDEIJUD6RME4L/?format=api",
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    "message_id": "[email protected]",
    "message_id_hash": "LV2GBG3B7S43XLRKGJ2FDEIJUD6RME4L",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/CA6NZCCL73LGPY7E62EHHXP6ISQYEMNC/?format=api",
    "sender": {
        "address": "glennmaillist (a) bellsouth.net",
        "mailman_id": "9677ac3fd61446a98cdc2cafdc18ac14",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/9677ac3fd61446a98cdc2cafdc18ac14/emails/?format=api"
    },
    "sender_name": "Glenn Little WB4UIV",
    "subject": "Re: [amsat-bb] NASA Helical Antenna Question",
    "date": "2018-05-07T23:39:52Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/CA6NZCCL73LGPY7E62EHHXP6ISQYEMNC/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/JDOFDUTG4WEEDKBTUCWSUED7NI6LHVGC/?format=api"
    ],
    "votes": {
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        "status": "neutral"
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    "content": "Looks like a standard 8 turn, axial mode, helix to me.\n\nsee https://en.wikipedia.org/wiki/Helical_antenna#Axial-mode_helical\n\nLooks like about 8 dBi gain.\n\n73\nGlenn\nWB4UIV\n\n\nOn 5/7/2018 6:57 PM, Steve Bossert via AMSAT-BB wrote:\n> I am curious about the helical antenna in the article just released late last month:\n> https://www.nasa.gov/feature/goddard/2018/nasa-upgrades-space-station-emergency-communications-ground-stations\n>\n> This one:\n> https://www.nasa.gov/sites/default/files/thumbnails/image/upgradedvhf-antenna.jpg\n>\n> While I await a reply from the article author, I wonder if anyone may have some details on this antenna.\n> Looks like a good candidate as a functional lawn ornament that is not another QFH for more garden modern art satellite installation.  I would like to author a construction and theory article for the HVDN.org  website in the \"notebook\" section.\n>\n> Thanks,\n> Steve\n> Steve Bossert [email protected] 914-573-1799\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions expressed\n> are solely those of the author, and do not reflect the official views of AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n\n-- \n-----------------------------------------------------------------------\nGlenn Little                ARRL Technical Specialist   QCWA  LM 28417\nAmateur Callsign:  WB4UIV            [email protected]    AMSAT LM 2178\nQTH:  Goose Creek, SC USA (EM92xx)  USSVI LM   NRA LM   SBE ARRL TAPR\n\"It is not the class of license that the Amateur holds but the class\nof the Amateur that holds the license\"\n\n",
    "attachments": []
}