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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/27OBB4RERWC2LGJXHTTDG6TRHYHVJSL4/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "27OBB4RERWC2LGJXHTTDG6TRHYHVJSL4",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/7COGIK36TIOZZKY453ECL2WA46YAVH7I/?format=api",
    "sender": {
        "address": "ve9qrp (a) gmail.com",
        "mailman_id": "4d6061838db34aba9a1c4722addebfaf",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/4d6061838db34aba9a1c4722addebfaf/emails/?format=api"
    },
    "sender_name": "Bruce Robertson",
    "subject": "[amsat-bb] Re: Delfi C-3 tracking an keplerian elements",
    "date": "2008-04-28T23:17:54Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7COGIK36TIOZZKY453ECL2WA46YAVH7I/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
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        "status": "neutral"
    },
    "content": "On Mon, Apr 28, 2008 at 7:08 PM, Jens Kirsten <[email protected]> wrote:\n> Hi Dave,\n>\n>  for satellite tracking I use \"orbitron\". It's easy to use and freeware.\n>  You can find it here: http://www.stoff.pl/\n>  The Keplerian elements needed for tracking can be found on the Delfi C-3\n>  web page:\n>  http://www.delfic3.nl/index.php?option=com_content&task=view&id=93&Itemid=122\n>\n>  Simply copy and paste the 2-line format in a txt-file and save this file\n>  as *.txt. This txt-file can then be loaded into the satellite tracking\n>  program, for example \"orbitron\".\n>\n>  Don't worry about Az/El rotor. I could receive almost every cubesat on\n>  VHF with my general groundplane antenna. Even with my HT TH-F7E\n>  reception in the field is possible.\n>\n>  You can also download the RASCAL telemetry decoding software from the\n>  Delfi C-3 page. See here:\n>  http://www.delfic3.nl/index.php?option=com_content&task=view&id=94&Itemid=123\n>\n>\n>  Best 73! from JO40ja\n>  Jens - DL2FJK\n>\n>\nI would add to Jen's helpful comments that your antenna choice\ndecisions are somewhat different when dealing with satellites. A\nhigh-gain omni antenna for terrestrial use gets its gain by keeping\nthe radiation angle low. For a satellite, though, that means that you\nwill receive poorly above, say, 15 degrees, and that might be the part\nof the pass where your omni antenna would otherwise have a fighting\nchance.\n\nAll to say that a crummy 1/4 wave groundplane might work better than\nthe jpole, especially if you can tilt the vertical element over a bit\nto reduce the null overhead.\n\nThis is truly an experimental branch of the hobby: each bird has its\ndifferent characteristics, and antenna design is great fun. Have as\nmany different options at hand as you can and see what works best for\nyou.\n\n73, Bruce\nVE9QRP\n\n\n>  D. Mynatt wrote:\n>  > Group,\n>  >\n>  > I'm new to this and a local ham has agreed to help me build a 'J'-type\n>  > antenna matched to 145.930Mhz to track Delfi. I won't have a Az/El\n>  > rotor setup, but my apt is the highest in the city (ain't saying much\n>  > about CO, huh?) and I'm hoping that's enough as the antenna is good on\n>  > the sides but not on the overhead, as I understand him to say.\n>  >\n>  > Any way, so I don't appear toooooo stupid can you tell me what\n>  > application I'd use to know where this bird is at, when. How does the\n>  > Keps for Delfi get into the app. Is everyone using SatPC ?\n>  >\n>  > Thanks for taking time outta this exciting moment,\n>  >\n>  > Dave (KA0SWT)\n>  >\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",
    "attachments": []
}