Email Detail

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/2CAZ5WC4WYPSALGVGISJTGWCEXFMT3L7/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "2CAZ5WC4WYPSALGVGISJTGWCEXFMT3L7",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/XX6NXUKJ3WQTUXXUCZNEMIQEG5PUFFTC/",
    "sender": {
        "address": "kq6ea (a) verizon.net",
        "mailman_id": "d2ef86d749ee450c8ad9ffc9f2e15cad",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/d2ef86d749ee450c8ad9ffc9f2e15cad/emails/"
    },
    "sender_name": "Jim Jerzycke",
    "subject": "[amsat-bb] Re: 70cm Helicoil Good/Bad expensive?",
    "date": "2011-07-12T01:38:17Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/XX6NXUKJ3WQTUXXUCZNEMIQEG5PUFFTC/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YZUUDOHI4CPTZAHGTUC2Q54V4WORRVEC/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "A \"Helicoil\" is a threaded insert used to repair stripped threads.\n\nI think you're asking about a HELICAL antenna.\n\nThey work very well, and are easy to build. They're very forgiving in \nconstruction errors, but have a few pitfalls you want to watch out for.\n\nYou do NOT want to wind one on PVC pipe for a support, as the dielectric \nconstant of the PVC will throw off the antenna from the design numbers \nyou use to wind the \"coil\".\n\nThis type of helical is called an \"Axial Mode\" antenna. A \"Normal Mode\" \nhelical is how a rubber duck is made, and is not what you want.\n\nThe ARRL Antenna Handbook has several designs that work well, and \nthere's a TON of information on the Web about building an \"Axial Mode \nHelical Antenna\".\n\nThey're fixed polarization, determined when you wind it, and the only \nway to switch between left-hand and right-hand is to have another \nantenna, and switch to it.\n\nI've built several, and they work pretty well. They get pretty big at 2 \nMeters, but are manageable (at least for me!) at 70cm and up.\n\n73, Jim  KQ6EA\n\n\nOn 07/12/2011 12:39 AM, Kevin Deane wrote:\n> Hello all, whats the take on these antennas? I am sure someone on here has used them and they certainly look cool but how do they perform?\n>\n> Dont you have to switch polerization on a cross polerized yagi?\n>\n> I know there is not a perfect antenna, just wondering about the Helicoil...\n>\n> Kevin\n> KF7MYK\n>   \t\t \t   \t\t\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": []
}