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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/RJEZXVGCQGJBOI7JBSC3CES6TP7LXBSD/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "000901c7bb69$25bdbba0$0301a8c0@Shop",
    "message_id_hash": "RJEZXVGCQGJBOI7JBSC3CES6TP7LXBSD",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/KK75DA42V2CVIKOT3KCXESRATCF6E3X2/",
    "sender": {
        "address": "juan-rivera (a) sbcglobal.net",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Juan Rivera",
    "subject": "[eagle] Re: U-band receiver changes to reduce EMI and improve\tthermal regulation",
    "date": "2007-06-30T22:51:07Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/CJSSQFG4TV4E5W7UJMYHGZQ5Q7ABJ7DL/",
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    "content": "Lou,\n\n \n\nThanks for sending that to me.  Have any prototypes been tested of the\nconverter?  I didn't see anything about the switching frequencies.  Where\nwill they fall?  Based on what you have, could an estimate be made as to the\nlevel and characteristics of conducted EMI on the bus?  That could become\nthe basis for an EMI requirement for the payloads.  Then, if some reasonable\nmethod can be devised to create that conducted EMI, we'll all be in a\nposition to test the payload designs against that EMI requirement, using the\ntest fixture. That would be a great thing!\n\n \n\n73,\n\n \n\nJuan\n\n \n\n  _____  \n\nFrom: Louis McFadin [mailto:[email protected]] \nSent: Saturday, June 30, 2007 2:18 PM\nTo: [email protected]\nCc: 'John B. Stephensen'; 'Dave Black (Work)'; 'Dave Black (Home)'; 'David\nSmith'; [email protected]; 'Samsonoff@Mac. Com'; 'Juan.Rivera (Work)'\nSubject: Re: U-band receiver changes to reduce EMI and improve thermal\nregulation\n\n \n\nFor a look at what is planned for the Eagle Power system, look at the\npresentation I prepared for Dayton this year. You can see it at\n\"http://homepage.mac.com/w5did\" Look in the w5did Eagle folder. The Max\nSolar Converter is a preliminary document annd not to be published but it\ndescribes the converter very well.\n\n \n\n \n\nLou McFadin\n\nW5DID\n\[email protected]\n\n\n\n\n\n \n\nOn Jun 30, 2007, at 7:05 AM, Juan Rivera wrote:\n\n\n\n\n\n \n\n \n\n \n\n \n\n \n\nJuan\n\nHi John,\n\nI had a chat or two with Bob Davis about chassis and I think you can bring\nSMA connectors out one side and the CAN-Do out the end, but nothing out the\nback.\n\nGiven the amount of conducted 5 kHz noise I'm seeing, do you think you can\nfilter it out?  Don't forget, I'm feeding the receiver with bypassed clean\nDC from the bench supply at the moment.  The CAN-Do switched DC is nasty.\n\nIn your next version why not raise the switching frequency up and get it out\nof the passband completely?  What do you think of Howard's idea of synching\nthe switching supplies?\n\nJuan\n\n\n\n",
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