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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/KT7R35JKLMGIXN2AZICU2NCECLJBLIYT/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "KT7R35JKLMGIXN2AZICU2NCECLJBLIYT",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/73DCM4X4FJCFWEXUOVRBIRFMFGZPYGGW/",
    "sender": {
        "address": "w6zkh (a) att.net",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "John Neeley",
    "subject": "[amsat-bb] Re: Elk dualband antenna experiences",
    "date": "2010-12-21T22:42:36Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YUFUIF35DHSMQ6JS3MEYFV32TYAORTE5/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I like my Elk yagi also, as like mentioned, breaks down for transportation quite \nnicely.  Attached photos are of my Elk yagi carry enclosure.  Made from ABS \nplumbing materials.  I store it in my truck toolbox, along with my HF coils in \nanother ABS tube so they wont be damaged.\n\nhttp://i863.photobucket.com/albums/ab199/W6ZKHJOHN/Vacation2009033.jpg\n\nhttp://i863.photobucket.com/albums/ab199/W6ZKHJOHN/Vacation2009034.jpg\n\nJohn W6ZKH\nDM06\n\n\n\n\n\n________________________________\nFrom: David Palmer <[email protected]>\nTo: Ted <[email protected]>\nCc: \"[email protected]\" <[email protected]>\nSent: Tue, December 21, 2010 1:40:27 PM\nSubject: [amsat-bb] Re: Elk dualband antenna experiences\n\nI'll add my two cents.\n\nI've used the Elk exclusively for the last few months operating\n\"portable\" in my backyard (and while camping, etc).  The Elk sits on a\nphotoraphic tripod, and I use a little netbook computer to display the\nsatellite plot and aim the Elk accordingly.  I absolutely love the\nantenna, it assembles/disassembles quick, doesn't take up much space,\nand has more than enough gain to work all the FM and SSB sats in this\nconfiguration.\n\nWhat I *have* noticed is that I do have to aim the Elk where the sat\nis.  If I lower the antenna to horizontal, I notice a significant\nfading.  That much is to be expected, so if you are in a situation\nwhere you can't elevate the antenna, just aim it up a certain number\nof degrees (maybe 15-30 depending on your horizon) so that it's close\nenough for low passes, and the high passes (where sat is much closer)\nshould also work.\n\nAs for polarization, I've noticed that I get much better performance\nout of the Elk by rotating the antenna to match the polarization of\nthe satellite at any given instant.  I have the PVC mount swivels\nfairly loose, so it doesn't take much to flip the antenna back and\nforth a little to find the best match.  When polarization is matching,\nI can have better than S8 sigs, and rotating the polarization 90\ndegrees will often decrease my sigs to S2 or below.  So ... for a\nfixed installation, with fixed polarization, you'll likely encounter\nsome deep fades in the passes, no matter which you choose.  So far\nI've found that I typically use \"almost vertical\" polarization\ncompared to less frequently using \"horizontal\" polarization, so if I\nhad to choose between the two, I'd go vertical ... but it may not make\nmuch difference!\n\nOne thing I've seen on the lists has been the recommendation to add a\npre-amp to the antenna.  Typically people will do this with an Arrow,\nsince it has separate VHF / UHF outputs so it's easier to config for\npreamp.  Those that use this method report great results, since the\npreamp overcomes much of the signal loss on the UHF downlink.  Since\nthe Elk has a single dual-band output, you may have to look into\nduplexers to split out the UHF signal for the preamp.\n\nHope that helps!  That all being said, I've been putting together an\noutdoor antenna system over the last few weeks (it's hard to sit in\nthe rain with the Elk and the twin FT-817's!) ... new system is a 4-el\nVHF yagi and 15-el UHF yagi with preamps, on an az-el rotator.\nInitial testing seems to indicate that it works pretty well -- so I'm\nlooking forward to staying dry during satellite contacts for a while!\n\n73 de Dave KB5WIA / CM88\n\n> -----Original Message-----\n> From: [email protected] [mailto:[email protected]] On\n> Behalf Of John Geiger\n> Sent: Monday, December 20, 2010 7:43 PM\n> To: Amsat-Bb@Amsat. Org\n> Subject: [amsat-bb] Elk dualband antenna experiences\n>\n> How does the Elk Dualband yagi work as a satellite antenna in a base setup\n> when you are not elevating it? Is it better to mount it for vertical or\n> horizontal polarization to get maximum coverage of satellite passes?  Still\n> trying to figure out the best FM sat setup here after some station redesign.\n>\n> 73s John AA5JG\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> 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_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n",
    "attachments": []
}