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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/I7WSPYBFRMLRUBBD62AAYMEWXHHOUXUQ/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "I7WSPYBFRMLRUBBD62AAYMEWXHHOUXUQ",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/YVG4BHFIHZGH2FJX6MX6TILNO2R52JFN/",
    "sender": {
        "address": "ko6th_greg (a) hotmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Greg D.",
    "subject": "[amsat-bb] Re: AO-51 mode L/U",
    "date": "2008-11-27T19:32:10Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YVG4BHFIHZGH2FJX6MX6TILNO2R52JFN/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/3WMMCLVUVAXWJ4HPI4IMS7KCINAAPPEO/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\nHi Greg,\n\nI've not tried L/U this week, but in the past I have been able to get in with 10 watts from my ICOM 1271A to a homebrew 18 turn helix, with about 60' of hardline and between 5 and 10' of RG-214 or similar at each end, between the rig and the antenna.  I have no idea what power actually reaches the antenna, but, between the cable and all the connectors, I expect it's only a couple of watts at the most.  Trees definitely are a factor (can't shoot through them very well), and I am on an Az/El rotor system so I can aim at the satellite pretty well.\n\nAs Drew notes, Doppler shift is really a factor on the upper bands.  You'll be spinning the dial constantly.  I use my satellite tracking program (predict on my Linux system) to tell me what frequency I should be on.  I haven't connected the rig to the computer yet, otherwise it would be automatically controlled.\n\nGood luck,\n\nGreg  KO6TH\n\n\n> Date: Wed, 26 Nov 2008 02:37:35 +0000\n> From: [email protected]\n> To: [email protected]\n> Subject: [amsat-bb]  AO-51 mode L/U\n> \n> \n> \n> I heard a few passes of AO-51 in L/U mode.  Most stations came in strong.  I tried to get into the bird using about 8 watts out into a 23cm horizontal yagi on an elevation rotor.  It was to no avail, though the bird was at 50 degree's and higher.  I am working on a CP antenna for mode L. \n> \n> \n> \n> Can those that worked this mode give me an idea of wattage, EIRP or antenna for Mode L that you are using.  I was sure 7-10 watts would do from the Icom 910.  However, it may have been the yagi and the lack of CP. \n> \n> \n> \n> Thanks \n> \n> Greg \n> \n> N3MVF \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_________________________________________________________________\nColor coding for safety: Windows Live Hotmail alerts you to suspicious email.\nhttp://windowslive.com/Explore/Hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_safety_112008 ",
    "attachments": []
}