Email Detail

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/H2ELFJ3VCG5QIK243V3EMKWE7YEK5ZVA/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "H2ELFJ3VCG5QIK243V3EMKWE7YEK5ZVA",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/25226SNLR7JQHI43WH4WBEEYEO5PLXTI/?format=api",
    "sender": {
        "address": "rjansson (a) cfl.rr.com",
        "mailman_id": "9b211bcd8a0642788e6dc055f3930699",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/9b211bcd8a0642788e6dc055f3930699/emails/?format=api"
    },
    "sender_name": "Dick Jansson-rr",
    "subject": "[eagle] Re: Receiver Spec vs. ATP,\ta few Suggestions and a Question or Two",
    "date": "2007-07-28T12:26:17Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/25226SNLR7JQHI43WH4WBEEYEO5PLXTI/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/UNVO56NCTM5YRXT3XRRMELWQFRN2OLOO/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Juan:\n\n \n\n>From a practical aspect, the hanging of electronics on the outside of an E05\n20 module is rather implacable as there is no place to put them. The thin\nmetal cover is not a place as the heat would not be spread out for\ndissipation, and the cover would not be \"divorceable\" from the rest of the\nmodule. You would not want to place them on the front connector bracket as\nyou are already scrambling for space for connectors. Those are the only\nareas that are open to the outside world. \n\n \n\nWe already have solutions for the mounting of these electronics on the\ninside of the module, where they belong, so I do not see where you otherwise\nplan to place these power conditioning electronics?\n\n \n\nDick Jansson, KD1K\n\n <mailto:[email protected]> [email protected] \n\n <mailto:[email protected]> [email protected] \n\n \n\n \n\nFrom: [email protected] [mailto:[email protected]] On Behalf Of\nJuan Rivera\nSent: Saturday, 28 July, 2007 05.23\nTo: 'John B. Stephensen'\nCc: David Smith; Dave Black (Work); Dave Black (Home); [email protected];\nSamsonoff@Mac. Com; Juan.Rivera (Work)\nSubject: [eagle] Receiver Spec vs. ATP, a few Suggestions and a Question or\nTwo\n\n \n\nJohn,\n\n \n\nI took a few minutes to look over your new specs and compare them against\nthe Acceptance Test Procedure.  I've got a number of tests in the ATP for\nwhich there are no specs:\n\n \n\n.        Image rejection\n\n.        Internally generated spurs\n\n.        Local oscillator leakage\n\n.        Input and Output VSWR\n\n \n\nItems that need to be addressed that aren't in either document:\n\n \n\n.        EMI conducted susceptibility\n\n.        EMI radiated susceptibility\n\n.        Short and long-term frequency stability\n\n \n\nI also take issue with the -60C minimum power-down temperature.  I think\nthis is unrealistic just from a CTE mismatch perspective.  The reliability\nof anything subjected to that wide a temperature spread is going to suffer.\nA way must be found to raise that temperature.\n\n \n\nI have a few thoughts...  The CAN-Do switching step-down converter is only\nsupplying 11 milliamps.  If we take a slight efficiency hit we could just go\nto a simple linear regulator and completely eliminate the radiated and\nconducted EMI emission problem from CAN-do.  That eases the EMI filtering\nand shielding requirements for every single payload.  That seems like a good\ntrade-off to me.\n\n \n\nRather than worry about trying to conduct heat through a PCB why not just go\nto externally mounted regulators for the CAN-Do and the Receiver right on\nthe case itself.  We're not that pressed for space.  That eases the heat\nsink and the associated thermal gap filler issues.  EMI will still be an\nissue, but only for external sources instead of one that is inside the\nenclosure itself.  That strikes me as a huge bonus.  Why not design a\nsingle-sided PCB with the regulators hanging over the edge and the whole\nassembly, PCB and regulators, mounted directly to the enclosure.  Stick it\nin with the CAN-Do module in a separate cell.  Filter all the signal and\npower through the common bulkhead.\n\n \n\nI'm also curious as to why you are specifying two different types of SMA\nconnectors.\n\n \n\n73,\n\n \n\nJuan - WA6HTP\n\n\n\n",
    "attachments": [
        {
            "email": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/H2ELFJ3VCG5QIK243V3EMKWE7YEK5ZVA/?format=api",
            "counter": 2,
            "name": "attachment.html",
            "content_type": "text/html",
            "encoding": "us-ascii",
            "size": 11205,
            "download": "https://mailman.amsat.org/hyperkitty/list/[email protected]/message/H2ELFJ3VCG5QIK243V3EMKWE7YEK5ZVA/attachment/2/attachment.html"
        }
    ]
}