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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/I4IYAXUPSZGITL7Z2QL25PNCXWJL5QF5/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "I4IYAXUPSZGITL7Z2QL25PNCXWJL5QF5", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/RXHHWHHTC66QKT3ZQHJF2YAODLFC6NWC/?format=api", "sender": { "address": "rwmcgwier (a) comcast.net", "mailman_id": null, "emails": null }, "sender_name": "Robert McGwier", "subject": "[eagle] Re: IF switching", "date": "2006-09-23T04:19:39Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/TMVEE33TJDLZBZETPP3US7A7HUZFPBXB/?format=api", "children": [ "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/RCVF3AHGTKDKTOZOCC56X4MI6VYJZMW2/?format=api" ], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Robert McGwier wrote:\n> The downlinks in Lyle's SDX block diagram are two-fold. S and V. The \n> only change I would make for Eagle is to make both of them HELAPS. This \n> might prevent both of them being used simultaneously as HELAPS but it \n> might not. We might choose to do a \"delay only\" version of the HELAPS \n> for the second transmitter.\n>\n> I would like to suggest that we use Mirek's command receiver to feed the \n> exact same command receive technology to be used for P3E and that is the \n> SDR/FIQ channel on the IHU-3. The less work we have to repeat, the \n> better. I believe we should have stand alone command receivers \n> independent of the transponder antennas. I would like to hear from John \n> \nErrrrr. Uhhhh. We might need antennas. I meant independent of the \ntransponder receiver antennas.\n> and Mirek on this. Mirek's command receiver is nicely done.\n>\n> Bob\n>\n>\n>\n> Lyle Johnson wrote:\n> \n>> Short version: The matrix function is subsumed into the SDX modules.\n>>\n>> To shed a bit more light, the SDX is designed with its own \"matrix.\" \n>> There are two uplinks: U and L. The SDX can select either or both. It \n>> can send its output to V or S (or whatever the second downlink is now \n>> going to be) - or both.\n>>\n>> At least, this is what we thought a year ago, and what we wrote up in \n>> the wiring harness report after the Colorado meeting last October.\n>>\n>> 73,\n>>\n>> Lyle KK7P\n>>\n>>\n>> _______________________________________________\n>> Via the Eagle mailing list courtesy of AMSAT-NA\n>> [email protected]\n>> http://amsat.org/mailman/listinfo/eagle\n>>\n>> \n>> \n>\n>\n> \n\n\n-- \nAMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats,\nNJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman\n\"You see, wire telegraph is a kind of a very, very long cat.\nYou pull his tail in New York and his head is meowing in Los\nAngeles. Do you understand this? And radio operates exactly\nthe same way: you send signals here, they receive them there.\nThe only difference is that there is no cat.\" - Einstein\n\n", "attachments": [] }