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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/RAQE7BVQH4VZYRZNL3FXMU2V7FOTJVGC/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "RAQE7BVQH4VZYRZNL3FXMU2V7FOTJVGC",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/RAQE7BVQH4VZYRZNL3FXMU2V7FOTJVGC/?format=api",
    "sender": {
        "address": "john (a) papays.com",
        "mailman_id": "40c82fe75f644d01882ed3a91ae267dd",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/40c82fe75f644d01882ed3a91ae267dd/emails/?format=api"
    },
    "sender_name": "John Papay",
    "subject": "[amsat-bb] Quadrifilar Antenna at Orlando Hamcation",
    "date": "2016-03-04T21:26:54Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Salvatore Bologna of Helical Technologies in Rockledge\nFlorida had his new quadrifilar uhf antenna at Orlando\nHamcation.  Sal wanted to test it on my satellite demo\nstation to see how it performed against the Arrow antenna\nwe were using.\n\nWe set up an A/B switch on the UHF port of the IC910H so\nwe could switch between their quadrifilar and the Arrow\non a tripod.  We tried it on FO-29 and SO-50 during\ntwo passes.  The results were not surprising.  The Arrow\nalways did better but the quad did hear stations.  They were\njust down a few db depending on the elevation.\n\nTheir quad is  housed in a pvc tube and was on a 10' pvc\nmast.  It is very stealthy and that's a nice characteristic\nof the antenna.  If you live in antenna restricted area,\nthis antenna will pass for a vent pipe or as part of a flagpole.\nBut there is no way this antenna can perform as well as a 7 el\nbeam adjusted for proper polarity.  But it does work and\nyou can hear stations on FO-29.  SO-50 is a much weaker\nbird and signals were weak on the quad.  But you could\nhear stations and you could make contacts.\n\nThere is a video of my demo station at Hamcation on youtube.com\nYou can see Sal sitting in back of the radio, flipping the\nA/B antenna switch during the passes.  The audio is not perfect\nso it may be hard to hear the difference between the antennas.\n\nThey are working on a vhf version.  Their website is\nhelicomtech.com\n\nAntenna selection depends on many different factors.  You\nwrite down your objectives and then consider your\nconstraints when making your decision to purchase.  Every\ncase may be a little different.\n\n73,\nJohn K8YSE\n\n\n",
    "attachments": []
}