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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/2RWAGLDS7AW2IL7YTOSJNNVJE5EJ4K7W/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "2RWAGLDS7AW2IL7YTOSJNNVJE5EJ4K7W",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/LPNUTKGHWXJYIY2CUB4TFTL4LLTNEH5R/?format=api",
    "sender": {
        "address": "aa2tx (a) comcast.net",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Anthony Monteiro",
    "subject": "[amsat-bb] Re: Easy to make, low cost omni-directional  antennae",
    "date": "2008-03-28T01:18:04Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/LPNUTKGHWXJYIY2CUB4TFTL4LLTNEH5R/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/RQLZYSM7ZILYVBGEUBB6X7L2JKNHOJRU/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "At 03:17 PM 3/27/2008, Bill Dzurilla wrote:\n>I have just been involved with the sats since February\n>and also wanted an omni for base station use\n...\n>Have not tried the Lindenblad.  Not many are using it\n>or talking about it, so I doubt it is all that great.\n\n\nDear Friends,\n\nI want to help remove any doubt.\n\nYou cannot buy a Lindenblad for the ham bands.\nThat is a major reason why that they are not so popular.\n\nIn terms of performance though, a few data points may\nhelp illustrate. This snapshot is for 2m antennas\nmounted at 6' elevation (like I do for field day)\n\n1. At 5 degrees elevation, a Lindy has about 5 dB\n    higher gain to satellites with circular polarization\n    versus an eggbeater. That is pretty significant if\n    you want to work max DX. Of course mounting\n    the antennas higher will also help.\n\n2. At 15 degrees elevation, the Lindenblad is only about\n    +2 dB higher gain than an eggbeater for circularly polarized\n    satellites (mostly insignificant.) But...\n\n3. at the same 15 degrees, on satellites with linearly polarized\n    antennas, a Lindenblad will show only about 5 dB max fading from\n    polarization mismatch versus nearly 25 dB max fading using\n    an eggbeater. That is pretty significant.\n\nSo, the eggbeater is probably the best omni antenna you\ncan buy for working DX on the LEO satellites.\n\nBut, in terms of performance, the Lindenblad is a\nbetter antenna if you are willing to build one.\n\n\n73,\nTony AA2TX\n\n\n\n\n\n\n\n\n\n\n",
    "attachments": []
}