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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/WNYKX2YFDP6GGA52JIW56ED4RSLFMBEG/?format=api",
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    "message_id": "[email protected]",
    "message_id_hash": "WNYKX2YFDP6GGA52JIW56ED4RSLFMBEG",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/5A7PZPE3PTIU6UJAMHD4KAPUZ6OU6WKX/?format=api",
    "sender": {
        "address": "bill (a) hsmicrowave.com",
        "mailman_id": "d7ecbf0c1df148f289f27dd7a8c37974",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/d7ecbf0c1df148f289f27dd7a8c37974/emails/?format=api"
    },
    "sender_name": "Bill Ress",
    "subject": "[eagle] Re: AO-51 Multiband Antenna???",
    "date": "2007-09-04T01:02:59Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/AGVKAZVNH724K6ZPG3SKEEY463VI54EJ/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/2NRQKBGOVVWFXVAHIFO6KXD43AGYJDB3/?format=api"
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    "votes": {
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        "status": "neutral"
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    "content": "Hi Gould,\n\nThis is my response to Andrew, which I sent before receiving your reply. \nBut your the guy I really need to address the question to since your the \nauthor of the book I'm looking at.\n\n\"Thanks for the reply Andrew.\n\nMaybe I'm a bit confused. In my Gould \"ECHO\" book (Version 1.1 - May \n2004) on page 31, Figure 18 \"ECHO satellite tray and component layout\" \nit shows the VHF, the 4 element UHF turnstile and the L and S band \nantennas - - - but it also shows a \"multiband antenna\" feeding a switch \nand then the SQRX receiver. The other side of the switch is fed from the \nL band LNA. The SQRX can tune from 10 to 1300 MHz, and somehow I \nremember a 28 MHz SSB uplink test. Could be I've got the satellites or \nmodes mixed up.\n\nBy the way, that Figure 18 is the only place I can see the \"multiband \nantenna\" referenced so maybe it's an error. Figure 16, on page 30 shows \nthe other side of the switch being fed by the VHF antenna. That's \nprobably the right representation.\n\nCan you help straighten me out?\n\nRegards...Bill - N6GHz \"\n\nGould Smith wrote:\n> As Drew said Stan designed it, with maybe help from Lou.\n>\n> I was told that it is an L Band antenna with S band stubs.  There is a \n> ground plane under it with radials for L and S band.\n> I wasn't able to get specifics about gain when I did the book.\n>\n> Gould\n> ----- Original Message ----- From: \"Andrew Glasbrenner\" \n> <[email protected]>\n> To: \"Bill Ress\" <[email protected]>; <[email protected]>\n> Sent: Monday, September 03, 2007 8:06 PM\n> Subject: [eagle] Re: AO-51 Multiband Antenna???\n>\n>\n>> Stan Wood designed it. It is a dual band L and S antenna, linearly\n>> polarized. I'm not sure what sort of \"in orbit data\" you are looking \n>> for,\n>> but it is in use whenever the L band uplink or S band downlink is in use\n>> including later this month.\n>> http://n4hy.smugmug.com/gallery/2107663#108915239 has good pics of the\n>> antenna.\n>>\n>> Something in particular you'd like to try?\n>>\n>> 73, Drew KO4MA\n>>\n>> ----- Original Message ----- From: \"Bill Ress\" <[email protected]>\n>> To: <[email protected]>\n>> Sent: Monday, September 03, 2007 7:54 PM\n>> Subject: [eagle] AO-51 Multiband Antenna???\n>>\n>>\n>>> Perhaps one of you can detail the \"multiband antenna\" used with the \n>>> SQRX\n>>> receiver aboard AO-51.\n>>>\n>>> A perusal of Gould Smith's \"ECHO\" makes reference to it but provides no\n>>> details.\n>>>\n>>> Does anyone have any in orbit data for this mode. What's the current\n>>> status for its use?\n>>>\n>>> Regards and thanks...Bill - N6GHz\n>>>\n>>> _______________________________________________\n>>> Via the Eagle mailing list courtesy of AMSAT-NA\n>>> [email protected]\n>>> http://amsat.org/mailman/listinfo/eagle\n>>\n>> _______________________________________________\n>> Via the Eagle mailing list courtesy of AMSAT-NA\n>> [email protected]\n>> http://amsat.org/mailman/listinfo/eagle \n>\n>\n\n",
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