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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/COQEGF3LEB2ATL3CYP24Q25HXYZQSWI7/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "COQEGF3LEB2ATL3CYP24Q25HXYZQSWI7",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/FV3SPRQMYOFYBI2WI7YQTY54FBTP3PW2/",
    "sender": {
        "address": "rjansson (a) cfl.rr.com",
        "mailman_id": "9b211bcd8a0642788e6dc055f3930699",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/9b211bcd8a0642788e6dc055f3930699/emails/"
    },
    "sender_name": "[email protected]",
    "subject": "[eagle] Re: Module Connectors",
    "date": "2007-06-30T21:55:38Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/H2IFI63ESVELFYQK5JORFMEPILET6PSP/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Juan:\n\nWhat do you propose to do with the cover?\n\nDick\n\n----- Original Message -----\nFrom: Juan Rivera <[email protected]>\nDate: Saturday, June 30, 2007 10:42 am\nSubject: RE: [eagle]  Module Connectors\nTo: [email protected], [email protected]\n\n> Dick,\n> \n> \n> \n> Following up on my reply, here's a shot of a right angle SMA \n> connected to\n> the type of PCB mount connectors we're using:\n> \n> \n> \n> \n> \n> \n> \n> This happens to be a straight cable-mount SMA connected to a right \n> angleadapter, but the size is the same either way.  It looks like \n> we'll need\n> about 25 mm of space on the side of the module to get the four RF \n> signals in\n> and out.\n> \n> \n> \n> 73,\n> \n> \n> \n> Juan - WA6HTP\n> \n> \n> \n> \n> \n> \n> \n> \n> \n> -----Original Message-----\n> From: [email protected] [mailto:[email protected]] On \n> Behalf Of\n> [email protected]\n> Sent: Saturday, June 30, 2007 6:33 AM\n> To: [email protected]\n> Subject: [eagle] Mocule Connectors\n> \n> \n> \n> John & Juan:\n> \n> \n> \n> Your EMI problems certainly do present considerable difficulties. \n> Your \n> \n> suggestions of placing connectors on multiple faces of a module \n> run \n> \n> counter to the whole module mounting plan for Eagle. The modules \n> are \n> \n> mounted with only about 1.5mm clearance at the flanges and only \n> about \n> \n> 16mm clearance on the sides. The \"rear end\" of the module is also \n> \n> difficult as there is just not that much space for cabling and \n> \n> connector access. Mechanical designers in the past have been raked \n> over \n> \n> the coals for not providing sufficient connector access. The \n> curren \n> \n> plan allows about 100mm (I don't have the drawings with me at the \n> \n> moment) of space between facing columns of modules for the cabling \n> and \n> \n> connector access. This is a plan that is pretty basic to the whole \n> \n> wiring plan for Eagle, and it is a result of a lot of experience \n> with \n> \n> P3D.\n> \n> \n> \n> While the basic module design for Eagle, unlike P3D, does not \n> provide \n> \n> for the stacking of modules, a small CAN module placed on top of \n> the \n> \n> URx, could be considered. Wiring to this sub-module would be by \n> means \n> \n> of jumper leads from its connector face into the URx. \n> \n> \n> \n> I caution that there currently is not planned for much space above \n> the \n> \n> rows of modules as the current spaceframe plan has the modules \n> placed \n> \n> fairly closely under the solar panels. This concept is part of the \n> need \n> \n> to keep the mass moment of inertia, Izz, high. This is NOT just a \n> \n> desirable feature, but a necessary, MUST need for the spin \n> stability of \n> \n> the spacecraft. So any top-mounted sub-module would have to not be \n> very \n> \n> thick.\n> \n> \n> \n> All of these issues arise from the practical considerations of the \n> \n> overall mission of the spacecraft. Unfortunately for the EMI and \n> \n> other \"local\" issues, we cannot design the spaceframe only for \n> EMI, but \n> \n> must solve other mission requirements, too.\n> \n> \n> \n> I am not trying to be unmovable on the design if the URx, but I am \n> \n> trying to explain how we can have a successful mission.\n> \n> \n> \n> '73,\n> \n> Dick, KD1K\n> \n> _______________________________________________\n> \n> Via the Eagle mailing list courtesy of AMSAT-NA\n> \n> [email protected]\n> \n> http://amsat.org/mailman/listinfo/eagle\n> \n> \n",
    "attachments": []
}