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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/E6ATVOTGKRPNBL6W2RFT2DGX2KVU76B7/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "000401c7d164$9e36e140$0301a8c0@Shop",
    "message_id_hash": "E6ATVOTGKRPNBL6W2RFT2DGX2KVU76B7",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/25226SNLR7JQHI43WH4WBEEYEO5PLXTI/?format=api",
    "sender": {
        "address": "juan-rivera (a) sbcglobal.net",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Juan Rivera",
    "subject": "[eagle] Re: Receiver Spec vs. ATP,\ta few Suggestions and aQuestion or Two",
    "date": "2007-07-28T22:14:04Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/Z322X3Z57HYE67IB22VP7TIJNW6GV4S7/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/DUPCGLJL2WXM3VS7FFUTV4PFLGZ5O5AD/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Bdale,\n\nIt would be a trade-off.  I've put out all the information I have and\neveryone knows my opinions.  I think someone else is supposed to be looking\ninto this but I forgot who it is since nothing has been posted.  I'd like to\nsee some alternative suggestions from the experts on the CAN-Do, the\nenclosure, and the EMI situation in general.\n\nBy the way, do I have a prototype CAN-Do module or was the intent to fly\nthis version with the dead-bug step-down converter hanging by three leads\nand a few wires?\n\nJuan\n\n-----Original Message-----\nFrom: Bdale Garbee [mailto:[email protected]] \nSent: Saturday, July 28, 2007 2:41 PM\nTo: [email protected]\nCc: 'John B. Stephensen'; David Smith; Dave Black (Work); Dave Black (Home);\[email protected]; Samsonoff@Mac. Com; Juan.Rivera (Work)\nSubject: Re: [eagle] Receiver Spec vs. ATP, a few Suggestions and aQuestion\nor Two\n\nOn Fri, 2007-07-27 at 21:23 -0700, Juan Rivera wrote:\n\n> I have a few thoughts...  The CAN-Do switching step-down converter is\n> only supplying 11 milliamps.  If we take a slight efficiency hit we\n> could just go to a simple linear regulator and completely eliminate\n> the radiated and conducted EMI emission problem from CAN-do.  That\n> eases the EMI filtering and shielding requirements for every single\n> payload.  That seems like a good trade-off to me.\n\nHrm.  What makes you say \"a slight efficiency hit\"?  \n\nDoing this on one or two modules that are particularly susceptible to\nnoise *may* make sense (and I'm certainly open to considering this as an\nalternative), but we're already on our second power supply design on the\nCAN-Do! because the original switcher, which was more efficient than a\nlinear regulator, was deemed too inefficient to fly on P3E by our\nAMSAT-DL friends.\n\nBdale\n\n\n\n\n",
    "attachments": []
}