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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YCTTOWRDJ6P75UA52LQLNI4OVTUE3MQ3/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "YCTTOWRDJ6P75UA52LQLNI4OVTUE3MQ3",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/YLYLAYGOHSO7ZVENZE33LYVC6ER2Y26B/?format=api",
    "sender": {
        "address": "list (a) k0nr.com",
        "mailman_id": "ddf89c615b954fd2aa66b786eff89d9a",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/ddf89c615b954fd2aa66b786eff89d9a/emails/?format=api"
    },
    "sender_name": "Bob K0NR (email list)",
    "subject": "[amsat-bb] Re: Fw:  ELK or ARROW",
    "date": "2008-12-29T20:41:05Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YLYLAYGOHSO7ZVENZE33LYVC6ER2Y26B/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Bob K0NR (email list) wrote:\n> [email protected] wrote:\n>> It seems improving the 2.4 dB of insertion loss of the diplexer would \n>> be a\n>> better strategy (although not necessarily easy in the space \n>> available) than\n>> attempting to modify what is very mechanically sound antenna.\n>>\n>> 73,\n>> Joe kk0sd\n>>\n>>   \n>\n>    I am surprised that the duplexer/diplexer (take your pick) has that\n>    much loss.\n>    Has anyone verified this via a direct measurement (such as via a\n>    network analyzer)?\n>\n>    Bob K0NR\nI don't have a network analyzer handy, so I did an A/B test driving the \nPower Meter on my HP 8920A using a handheld radio.\nAt 435 MHz, the measured power with just a cable connection is 2.5 W. \nWith the Arrow duplexor inserted, the power is 1.8 W.\nThis implies a loss of 10 log (1.8 /2.5) = -1.4 dB, more than I would \nhave expected.\n\nHow accurate is this measurement? I dunno, probably no worse than 0.5 \ndB. This deserves further investigation.\n\n73, Bob K0NR\n",
    "attachments": []
}