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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/QVNESLQ36YEJDGGSKN7OSBNUSKMMEGNU/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "QVNESLQ36YEJDGGSKN7OSBNUSKMMEGNU",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/C32FHV2ZUJYDEGENP4EGWVGEK434RF6Q/",
    "sender": {
        "address": "zack.kd8ksn (a) hotmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Zachary Beougher",
    "subject": "[amsat-bb] Re: KD8KSN/M & a question",
    "date": "2011-05-14T11:51:10Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/TCDKWH22QLGSWF3SQRNRIULBEHFLDIBY/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Jeff!\n\n>1.  The fact that your downlink antenna is always vertically polarized\n>rather than steered to the polarization of the satellite.\n\nI know the vertical antennas have a null directly overhead, but it doesn't \nmake sense to me why I can hear TCA-LOS fine, but AOS-TCA is hard - and that \nwas on an 87 degree pass.\n\n>2.  The position of the antenna on your vehicle could also have a huge\n>affect as well as the orientation of the vehicle to the satellite during \n>the\n>pass.\n\nWe were driving in a straight line on the interstate at the time of the \npass(s), so the vehicle was generally oriented the same direction.\n\nThe FTM-350AR is full duplex, but it also has a more sensitive receiver than \nthe TH-D7A, so I have used it for receive.  I could still use it for uplink \nas well, but I had the ARR preamp hooked inline, and you obviously don't \nwant to transmit 2m through it.  In the short term it was just easier to use \nthe TH-D7A for uplink.  Why do you ask?\n\n73!\n\nZack\nKD8KSN\n\n-----Original Message----- \nFrom: Jeff Moore\nSent: Friday, May 13, 2011 8:53 PM\nTo: [email protected]\nSubject: [amsat-bb] Re: KD8KSN/M & a question\n\nI could be wrong, but I suspect a couple of things:\n\n1.  The fact that your downlink antenna is always vertically polarized\nrather than steered to the polarization of the satellite.\n\n2.  The position of the antenna on your vehicle could also have a huge\naffect as well as the orientation of the vehicle to the satellite during the\npass.\n\nIsn't the FT-350 full duplex capable?\n\n73,\n\nJeff Moore  --  KE7ACY\n\n----- Original Message ----- From: \"Zachary Beougher\"\n<[email protected]>\n\nHi All,\n\nThanks for the QSO during my few mobile ops the past couple days – and for\nyour patience.  We had three small road trips planned for various reasons\nWednesday-Friday, so it provided a great opportunity to try the mobile\nequipment out, find out what combinations work better than others, etc.,\netc., so I can perhaps get on the air a little more while mobile during\nvacations and such.  I will be uploading all QSOs to LoTW within a day or\nso, and if anyone wants a card just email me the QSO details.  I did have a\nquestion:\n\nOne consistent issue I found while operating is that I could just barely\nhear a bird from AOS-TCA, but from TCA-LOS I could hear fine, even down to\n10-5 degrees.  I am not understanding why I can’t hear one side of the pass,\nbut I can hear the other fine – almost full quieting with the preamp.  I\nshould also mention that I experienced this issue on AO27 and SO50, not\nAO51.  I would thinnk it would be a polarization issue, but that still doesn’t\nmake sense to me.  My main setup consisted of:\n\nUplink:  TH-D7A (7w plugged into 12VDC), Comet CA-2x4SR mag for uplink.\n\nDownlink:  FTM-350AR, ARR SP432VDG preamp on battery or 12v, Arrow duplexer\n(440 side hooked up which solved my desense issues so I could work full\nduplex), and a 19” quarter wave mag.\n\nI had posted here about a month or so ago wondering if intermod would be an\nissue using a preamp while mobile.  I monitored about 7-8 passes over the\npast three days while mobile and intermod was never an issue.  I did have a\nlittle bit of alternator whine on the FTM-350AR’s receive, but it was very\nminimal.  That could be solved by running the cables directly to the\nbattery.  Since we were in the family vehicle I just used the cig lighter (I\nknow that’s not a good idea, but it was only for a couple days).\n\n73!\n\nZack\nKD8KSN\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\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\n",
    "attachments": []
}