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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/XMXPNB7SM75RY4MOEPEE42QSF4I4V7TT/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "XMXPNB7SM75RY4MOEPEE42QSF4I4V7TT",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/IM7XFNNUHZGEAO6O7C5573BHOAMNQ5RU/",
    "sender": {
        "address": "w4upd (a) bristor-assoc.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "w4upd",
    "subject": "[amsat-bb] Re: antennas and schedule for AO-7?",
    "date": "2008-02-18T00:38:38Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/IM7XFNNUHZGEAO6O7C5573BHOAMNQ5RU/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "You just answered your own question about antenna and angle of \nradiation. If you have trouble above 25 degrees. this is normal for \nverticals, especially high gain verticals (Ringos, etc.). I use omnis \nhere for now as my arrays are still on the ground from the storms of \n'04'. I suspect that the Arrow antennas I hear about would probably work \nwell. I have used and need to put new ones up, sloper 1/4 wave ground \nplane antennas. They have worked quite well in the past for me. The \nsatellite handbook has examples of the sloped ground plane.\n\nGood luck on the birds. By the way, the mode ('A' or'B') of AO-7 is a \ncrap shoot as there is no automatic control and it will come up however \nit feels. It appears to be in mode 'A' more than it has in the past but \nstill comes up also in mode 'B'.\n\nReid, W4UPD\n\nBill Dzurilla wrote:\n> Hi,\n>\n> Today I listened for the first time for AO-7.  I read\n> all the info pages about this bird, but did not see\n> anything about a key question: when is the bird in\n> mode A and when in mode B?  Is there a schedule, or do\n> we have to listen on both 10m and 2m until we hear the\n> beacon?\n>\n> Anyhow, this morning there was a high pass and I heard\n> the sat loud and clear in mode A, although it was not\n> at all busy.  Just 2 or 3 stations calling CQ on cw,\n> no ssb at all.  I was able to hear my own ssb signal\n> on the downlink.\n>\n> Was wondering what is a good antenna for receiving the\n> 10m downlink.  I have a vertical that usually performs\n> quite well for regular HF work, but I lost the sat\n> signal when the bird was still quite high, 25 degrees\n> or so.  This surprised me, as the vertical has a low\n> angle of radiation.\n>\n> Is there any SSB activity on this sat?\n>\n> 73, Bill NZ5N \n>\n>\n>       ____________________________________________________________________________________\n> Looking for last minute shopping deals?  \n> Find them fast with Yahoo! Search.  http://tools.search.yahoo.com/newsearch/category.php?category=shopping\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>   \n\n",
    "attachments": []
}