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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BNIJDBFHAG3PPIBAKJKZQMKCLTNKE4XA/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "BNIJDBFHAG3PPIBAKJKZQMKCLTNKE4XA", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/G75EWBTUZNHQRUX4NLVWK52DIOM5EOAY/", "sender": { "address": "greencl (a) mindspring.com", "mailman_id": "5421c5ff9a12494f8f7bd304db4ac696", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/5421c5ff9a12494f8f7bd304db4ac696/emails/" }, "sender_name": "Chuck Green", "subject": "[eagle] Re: Review", "date": "2007-10-19T17:53:50Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ZOA4MF2D5J7CKLVVDBXYSQMJWPVGDMFC/", "children": [ "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/2QE26MLNBTF4O74ULDJUFBLMW75FCZFI/" ], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Hi Dick,\n\nOops, you did say clearly that this was a PCB drawing. I was thinking it \nwas a top view of the base plate. Sorry!\n\nThis leaves me with a new question... Is the clear space (126mm x \n173.6mm) an absolute number or does this allow for clearance to \ncomponents/traces on the bottom of the PCB? In other words, do I need to \nkeep electrical conductors back away from these edges (on the bottom of \nthe PCB) to keep from shorting them to the mounting rails?\n\nChuck\n\nDick Jansson-rr wrote:\n>\n> Chuck:\n>\n> The E05 64 drawing is THE ACTUAL SIZE of the PCB, 140x180mm.\n>\n> The 0.5mm note just informs the constructor that the nearest \n> structural elements are 0.5mm from the PCB.\n>\n> There are NO threads on the PCB, the thru clearance holes are as shown \n> 11 each diameter 3.25mm through holes for clearance to the 4-40 \n> mounting screws.\n>\n> The missing radius (a reason for the review drawing J ) is “2xR3.2mm”\n>\n> The dimensional difference in the “mounting rail” is just the way \n> things turned out. (I could say that I want good thermal conductance \n> values between the PCB and the Baseplate.) I do note that in certain \n> thermal situations, I reserve the right to add more screws along the \n> edges to insure good thermal conduction to the Baseplate. The 54mm \n> spacing here is pretty wide when we discuss good contact conductance \n> between the PCB and the Baseplate.\n>\n> -----Original Message-----\n> From: Chuck Green [mailto:[email protected]]\n> Sent: Friday, 19 October, 2007 16.16\n> To: Dick Jansson-rr\n> Cc: Bob Davis; AMSAT Eagle\n> Subject: Re: [eagle] Review\n>\n> Hi Dick,\n>\n> Thank you for the dimensioned drawing. I can design a PCB from this. A \n> few questions...\n>\n> What is the inside radius of the clear space at the rear?\n>\n> What is the thread of the mounting holes? Do you intent to use inserts?\n>\n> The actual PCB size is 139 x 179 mm. No?\n>\n> Why is the mounting rail a different size at the back than on the \n> sides? I don't really care what it is, just curious.\n>\n> Chuck\n>\n> Dick Jansson-rr wrote:\n>\n> >\n>\n> > Bob:\n>\n> >\n>\n> > Attached is drawing E05 64, 140x180 PCB. This is being sent out for\n>\n> > your review, prior to being posted on Eaglepedia. This PCB gives more\n>\n> > working area with fewer interruptions to the working area (just\n>\n> > essentially two posts). Please look at this and forward any corrective\n>\n> > comments.\n>\n> >\n>\n> > ’73,\n>\n> >\n>\n> > Dick Jansson, KD1K\n>\n> >\n>\n> > [email protected] <mailto:[email protected]>\n>\n> >\n>\n> > [email protected] <mailto:[email protected]>\n>\n> >\n>\n> > ------------------------------------------------------------------------\n>\n> >\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>\n", "attachments": [] }