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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/WGQKH4OE3QFFUNX2W7IHCRNTKC5HLQLP/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "WGQKH4OE3QFFUNX2W7IHCRNTKC5HLQLP",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/WGQKH4OE3QFFUNX2W7IHCRNTKC5HLQLP/",
    "sender": {
        "address": "nickhart (a) usa.net",
        "mailman_id": "5060df6fd6a943388f9016fd97b54283",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/5060df6fd6a943388f9016fd97b54283/emails/"
    },
    "sender_name": "Nick Hart",
    "subject": "Re: [amsat-bb] AO-91 and circular polarization?",
    "date": "2018-03-12T02:21:53Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "If you can make the direction switchable without adding too much weight, that\ncan be helpful.  \n\nWe did an ARISS QSO this week and switched the polarity in the middle of it. \nIt was just the best thing for that particular pass. \n\n------ Original Message ------\nReceived: Sun, 11 Mar 2018 04:49:46 PM PDT\nFrom: Jerry Buxton <[email protected]>\nTo: [email protected]\nSubject: Re: [amsat-bb] AO-91 and circular polarization?\n\nTodd,\n\nCorrect is not really a consideration, the way I see it.  Will a CP\nantenna work?  Yes.  Polarization should not matter for AO-92.  (BTW I\npresume you mean AO-92, not AO-91 in which case L band just flat won't\nwork no matter the antenna, period.)     :-)\n\nI use RHCP because I built my antenna for AO-51 and that is was in use\nat the time.  I believe that when CP is used on a satellite, at least in\nthe AMSAT history, it has been RHCP most of the time so building for\nRHCP may have advantages for future satellites.\n\nJerry Buxton, NØJY\n\nOn 3/11/2018 15:44, Todd W Deckard wrote:\n> Would it be correct to use a CP antenna on the L-band uplink for AO-91?   If\nso which polarization?\n>\n> Just purchased an ICOM X-2 on ebay that gets me 1.2ghz and the temps are\ngetting civilized so it’s about time to get back on the air ...\n>\n> My elev. over azimuth system is already swinging more mass than it was\ngeared for and i’m looking to cook up a small antenna that doesn’t add too\nmuch straw to the camel.  \n>\n> I would like to go Helical just because ...\n>\n> if anyone has an alternate suggestion I’d listen to any and all.\n>\n> Thanks\n> Todd\n> KE0CMD\n> Sent from my iPhone\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions\nexpressed\n> are solely those of the author, and do not reflect the official views of\nAMSAT-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_______________________________________________\nSent via [email protected]. AMSAT-NA makes this open forum available\nto all interested persons worldwide without requiring membership. Opinions\nexpressed\nare solely those of the author, and do not reflect the official views of\nAMSAT-NA.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n\n\n",
    "attachments": []
}