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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MHHQCX64MLQCNUJ7YD7GNLR4P5KRNDCL/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "MHHQCX64MLQCNUJ7YD7GNLR4P5KRNDCL",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/MHHQCX64MLQCNUJ7YD7GNLR4P5KRNDCL/",
    "sender": {
        "address": "jonny290 (a) gmail.com",
        "mailman_id": "bed0432ae6e64c0493fa6343553c3746",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/bed0432ae6e64c0493fa6343553c3746/emails/"
    },
    "sender_name": "Jonny 290",
    "subject": "[amsat-bb] Station not quite coming together - notes and request\tfor advice",
    "date": "2007-03-07T01:19:08Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "OK, the situation is: I'm building up a satellite station to get familiar\nwith LEO sats and to get ready for the phase 3E fun to start soon. Here's my\nstation, and I'll post my thoughts after that.\n\nRX path:\n\nEggbeater II antenna mounted at 15 feet. This is built to the K5OE Eggbeater\nII spec (http://members.aol.com/k5oejerry/eggbeater2.htm) but uses a 100 ohm\nphasing line using two 50 ohm coax lines done in parallel, used in a\nbalanced configuration, instead of 93 ohm RG-62. Antenna was 'redesigned' in\nMMANA-GAL to match exactly 100 ohms and to use 6mm diameter copper tubing\ninstead of AWG 12 house wire. It is peaked for SWR < 1.05 at 436 MHz, and is\nless than 1.5 at 435.0 and 437.0.\n\nAntenna is the secondary antenna on this mast and is mounted on a 3 foot PVC\nstand-off pipe. The primary antenna is a Diamond F22A mounted at\napproximately 18 feet. It has a 10.5 foot vertical element and three 1/4\nwave horizontal radials. It is not used in the satellite station but I\nwanted to describe it, in case it is interfering (I suspect it is.)\n\nEggbeater is fed through29 feet of 213 spec coax (5.1 dB loss/500 MHZ)\nterminated in well done PL-259 connectors. I have verified this particular\ncable's loss at less than 2 dB at 460 MHz, using my Icom PCR-100's accurate\nS-meter and a known signal source.\n\nMy latest upgrade: RX chain goes into a homebrew relay / Ramsey preamp box.\nThe preamp provides approximately 18 dB of gain when inserted and using a\ntest signal around 432 MHz. It has proven somewhat beneficial, giving me 2-3\nS-units advantage at certain points from the LO-19 CW beacon (Which I\nrecently received at up to S9 with the preamp on a ~60 degree pass).\n\n>From the\nReceivers:\nIC-208H dual band radio, rated at <0.18 uV for 12dB SINAD\nOR\nPCR-100 computer controlled receiver, rated at <0.34 uV for 12dB SINAD\n",
    "attachments": []
}