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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YG45O7JWALMMPNBXAEYMKLM22CULMT7N/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "021820080617.20977.47B9230E000AA433000051F122165258560B9D04C999@comcast.net",
    "message_id_hash": "YG45O7JWALMMPNBXAEYMKLM22CULMT7N",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/YG45O7JWALMMPNBXAEYMKLM22CULMT7N/?format=api",
    "sender": {
        "address": "w7lrd (a) comcast.net",
        "mailman_id": "717aa2a241704c7497e9abd8c983f6b7",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/717aa2a241704c7497e9abd8c983f6b7/emails/?format=api"
    },
    "sender_name": "[email protected]",
    "subject": "[amsat-bb] Re: antennas and schedule for AO-7?",
    "date": "2008-02-18T06:17:50Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hello \nThis post brings up an interesting issue regarding mode A.  Back in the day of RS10 & 15, mode A was quite popular.  I soon discovered that my 10 meter four element quad, though a hot antenna at 28.4Mhz was lousey at 29.5.  In fact it received better off the back for mode A than off the front.  After thinking about it,  I realized the reflector was acting as a director at 29.5Mhz, and the other two directors were out of the picture.  Yes the SWR was high but it was for receiving. I even went to the effort of building a 10 meter loop, \"looking\" up for high elevation passes.   So, for  those of us who still play with mode A on AO-7, flip that beam around, you might be surprised!\n\n73 Bob W7LRD\nSeattle\n\n--\n\"if this were easy, everyone would be doing it\"\n\n-------------- Original message -------------- \nFrom: Bill Dzurilla <[email protected]> \n\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> ________________________________________________________________________________ \n> ____ \n> Looking for last minute shopping deals? \n> Find them fast with Yahoo! Search. \n> 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",
    "attachments": []
}