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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/QOE4ITQ5DNIA3ZKM3SVCITNCDCGDEWQI/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "00a901ce3b09$2c5b2bc0$85118340$@net",
    "message_id_hash": "QOE4ITQ5DNIA3ZKM3SVCITNCDCGDEWQI",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/MQGUK7VGAJG3PA5QMD4H55U7BZWHZWLK/?format=api",
    "sender": {
        "address": "kb2m (a) comcast.net",
        "mailman_id": "4f01ae6749a54d178a501e4efec2da0b",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/4f01ae6749a54d178a501e4efec2da0b/emails/?format=api"
    },
    "sender_name": "Jeff KB2M",
    "subject": "[amsat-bb] Re: Mount an Arrow on rotator with 2m vertical\tor\thorizontal",
    "date": "2013-04-17T01:16:22Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VSR2WD3RXER2RPI4BX37WPG6WJHP6VL6/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Or check out the plans (from the AO-40 days) and build notes on how to build\na circular phasing harness for the arrow 70cm crossed yagi on my website\n\n http://home.comcast.net/~kb2m/\n\nIt also describes in detail how I used an MFJ 259 to fine tune the\nharness...\n\n73 Jeff kb2m\n\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of Gary \"Joe\" Mayfield\nSent: Tuesday, April 16, 2013 20:52 PM\nTo: 'AMSAT-BB'\nSubject: [amsat-bb] Re: Mount an Arrow on rotator with 2m vertical or\nhorizontal\n\nIt can work well.  At w0wtn we did circular for VHF and UHF in 2005.\n\nThere is a picture of the setup here:\nhttp://www.w0wtn.org/img_browse.php?i=/images/field_day_2005/KK0SD_Sat_Ant.j\npg\n\nI took the phasing info straight from the Satellite Experimenter's Handbook.\n\nYou might notice the S Band cavity backed Helix as well :-)\n\n\n73,\nJoe kk0sd\n\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of N0JY\nSent: Tuesday, April 16, 2013 5:03 PM\nTo: AMSAT-BB\nSubject: [amsat-bb] Re: Mount an Arrow on rotator with 2m vertical or\nhorizontal\n\nI did it at field day last year, a couple of Arrow antennas with the 2 meter\nside set up for RHCP.  Seemed to work real well on the analog birds.\nSome 75 ohm coax does the matching, see a picture at\nhttp://www.n0jy.org/images/IMG_20120623_215906.jpg\nThe picture was taken at night, so look closely and you'll see a 1/4 wave 75\nohm section at the tee to both sides, the right side directly to the antenna\nand the left side to another 1/4 wave 50 ohm section connected to the\nantenna.\nCredit goes to SV1BSX I got the idea from his web site\nhttp://sv1bsx.50webs.com/antenna-pol/polarization.html\n\nJerry\nN0JY\n\nOn 4/16/2013 1:31 PM, Douglas Phelps wrote:\n> Any reason why, using identical coax lengths, you could not transform the\n> impedance to 100 ohms and then use a T connector to sum both antenna\nsignals and\n> achieve 50 ohms to the radio?  I know Transmit power will be 3 dB down at\neither\n> antenna but is there any reason it will not work?  Any antenna gurus out\nthere?\n>\n>\n>\n>\n> ________________________________\n> From: R.T.Liddy <[email protected]>\n> To: [email protected]\n> Sent: Tue, April 16, 2013 11:46:35 AM\n> Subject: [amsat-bb] Re: Mount an Arrow on rotator with 2m vertical or\nhorizontal\n>\n> For the Satellites, it completely doesn't matter. At any given moment,\n> you only have 1 chance in 90 that you will have matching polarization.\n>\n> So, if you plan to use the antenna for other than Satellites, set your\n> polarization\n> for that purpose (V for FM or H for SSB/CW).\n>\n> My plan is to install 2 Elk antennas, one V and one H. Then, have a relay\nthat\n> I can switch between the two and choose the best downlink signal at any\n> given moment. This arrangement will also give me optimum flexibility for\n> terrestrial operation on 2 & 440.\n>\n> Now, where can I find a relay to do that function?????\n>\n> 73/GL,    Bob K8BL\n>\n>\n> --- On Tue, 4/16/13, Lee Maisel <[email protected]> wrote:\n>\n>\n> From: Lee Maisel <[email protected]>\n> Subject: [amsat-bb] Re: Mount an Arrow on rotator with 2m vertical or\nhorizontal\n> To: \"Don Hoover (WS4E)\" <[email protected]>\n> Cc: [email protected]\n> Date: Tuesday, April 16, 2013, 12:24 AM\n>\n>\n> Hi Don,\n>\n> I have mine mounted with 2m elements horizontal, because that's how it\n> seems I used it most when it was handheld.\n>\n> Lee\n> W5LMM\n>\n>\n> Don Hoover (WS4E) wrote:\n>> Just wondering, should I mount my arrow with the 2m elements oriented\n>> vertical or horizontal?\n>>\n>> I am planning on putting it at 15deg and just using a az rotator.\n>>\n>> Does it even matter which way its oriented since the polarity of the sats\n>> are always changing?\n>>\n>> Maybe I should mount it like this: / instead.\n>>\n>> Just curious what some thought was the best way to go.\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\nprogram!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>>\n>>\n>\n\n\n",
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}