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    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ZYGSYSOICP4M5PFNJW34YLAMYJPDU5TF/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "CANsNeap6qsjpAr6JKtXTxFy3X+CA5Hbbk-BHQ6xt_Et08MLshw@mail.gmail.com",
    "message_id_hash": "ZYGSYSOICP4M5PFNJW34YLAMYJPDU5TF",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/ZYGSYSOICP4M5PFNJW34YLAMYJPDU5TF/",
    "sender": {
        "address": "rich (a) ourowndomain.com",
        "mailman_id": "de4e965f89da4d4790638af3cb47f33c",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/de4e965f89da4d4790638af3cb47f33c/emails/"
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    "sender_name": "Rich Gopstein",
    "subject": "[pacsat-dev] Re: AX5043",
    "date": "2023-04-27T23:37:12Z",
    "parent": null,
    "children": [],
    "votes": {
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    "content": "Just be aware that the Single-Ended pin is XMIT only.  Only the\ndifferential pins can do both receive and xmit.\n\nRich\n\n\nOn Thu, Apr 27, 2023 at 6:26 PM Burns Fisher (AMSAT) via pacsat-dev <\[email protected]> wrote:\n\n> Just FYI (and Zach may have comments) I don't know about differential\n> first not, but the fact that the 5043 and switch between them means that\n> the single ended output can be optimized for one band while the\n> differential can be optimized for another band.  That's how one RT-IHU\n> processor can do either Rx or Tx (but not simultaneously) on two different\n> bands with the same 5043.\n>\n> 73,\n>\n> Burns Fisher, WB1FJ\n> *AMSAT(R) Engineering -- Flight Software*\n>\n>\n> On Thu, Apr 27, 2023 at 10:14 AM Jim McCullers via pacsat-dev <\n> [email protected]> wrote:\n>\n>> The bandpass filter and LNA would proceed this circuit.\n>> Most LNAs I'm familiar with are single ended output.\n>> Differential input is a bit of an oddity for an RF interface.  I'm certain\n>> someone had a reason.\n>>\n>> In our instance we will have a bandpass filter followed by an LNA followed\n>> by a 1:4 splitter for the four receivers.\n>> Each receiver will require some form of single end to differential\n>> converter.\n>>\n>> 73,\n>>\n>> Jim McCullers\n>> WA4CWI\n>>\n>>\n>>\n>> On Thu, Apr 27, 2023 at 03:14:21AM +0000, Jim McCullers via pacsat-dev\n>> wrote:\n>> > Attached is a document that I prepared to describe work I've done with\n>> > AX5043 to create a receiver with a reduced component count.\n>> >\n>> > I'll post it to github later.\n>>\n>> Just curious, I'm not an expert on RF, but where does the LNA fit in here?\n>> It seems like you could do the conversion from single-ended to\n>> differential\n>> using an LNA if you were already using one.\n>>\n>> I've only played with single-ended designs, so this is something\n>> completely\n>> different for me.\n>>\n>> -corey\n>>\n>>\n>> -----------------------------------------------------------\n>>\n>> pacsat-dev mailing list -- [email protected]\n>> View archives of this mailing list at\n>> https://mailman.amsat.org/hyperkitty/list/[email protected]\n>> To unsubscribe send an email to [email protected]\n>> Manage all of your AMSAT-NA mailing list preferences at\n>> https://mailman.amsat.org\n>>\n>\n> -----------------------------------------------------------\n>\n> pacsat-dev mailing list -- [email protected]\n> View archives of this mailing list at\n> https://mailman.amsat.org/hyperkitty/list/[email protected]\n> To unsubscribe send an email to [email protected]\n> Manage all of your AMSAT-NA mailing list preferences at\n> https://mailman.amsat.org\n>\n\n\n",
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