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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/DJGZXSL3VHEJJTOTEZOGDF7FKAP4I2A6/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "DJGZXSL3VHEJJTOTEZOGDF7FKAP4I2A6",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/JG3YLL4B6B4EF6K6WBFBWXAG4DMXWRVP/",
    "sender": {
        "address": "greggwon (a) gmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Gregg Wonderly",
    "subject": "[amsat-bb] Re: FT-8800R new toy",
    "date": "2011-03-13T22:40:33Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MBJMRGOAY7D4Y4HXLKYKUUPN2DPGKZ6I/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "For sat ops mobile, you will get the most success out of a 1/4 wave antenna on a good ground plane.  It will give you a hemispherical emission pattern so that any direction in LOS is equally covered.\n\nGregg\nW5GGW\n\nSent from my iPhone\n\nOn Mar 13, 2011, at 4:28 PM, Ari Kosonen <[email protected]> wrote:\n\n> 2011/3/13 Bob- W7LRD <[email protected]>\n> \n>> Not wanting to reinvent the wheel.  Anyone using the FT-8800R mobile for\n>> satellites have any hints or sugestions, antennas etc.  Email direct-thanks.\n>> \n> Hi,\n> \n> I am using FT-8900R (practically same as '8800 plus 6m and 10m) for working\n> satellites\n> from my car. My antenna is a Diamond NR770 dualband whip on the trunk lid of\n> my car.\n> While this setup is ok for usual mobile FM operation and APRS, it is\n> probably not optimal\n> for satellite ops. I have got better results on satellites with a dual band\n> mag whip on the roof the my car. Especially when the satellite is below ~60\n> degrees it can be reached easily when\n> I can hear it (thanks to 50 watts on the uplink). When the sat is higher\n> than that the whip\n> is not so good.\n> \n> I have been working mainly on AO-51 and I have preprogrammed the\n> uplink/downlink\n> channel pairs with different doppler values so it is easy to follow the\n> sweet spot while\n> the sat first approaches (above the nominal frequency on downlink) and the\n> starts to fly\n> away (below the nominal freq). Programming goes easily with FTB8900 software\n> by\n> G4HFQ. As same channel pairs are available both on the left and right side\n> of the\n> radio, I usually transmit and listen on the left side of the radio and try\n> to listen my\n> own signal on downlink with the right side of the rig. With a single mobile\n> whip\n> the sensitivity of the downlink rx is usually not good enough during the\n> transmission.\n> This might be better with separate antennasa for uplink and downlink.\n> \n> I have planned to use my Arrow yagi with FT-8900R. As the Arrow's diplexer\n> is rated only\n> max 10 watts, I bought 100w rated separate diplexer to be used with '8900\n> instead.\n> But I have not tried this combination yet.\n> \n> 73 de Ari OH3KAV / OH7KA\n> Tampere, Finland (grid: KP11)\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",
    "attachments": []
}