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GET /hyperkitty/api/list/[email protected]/email/DJIHWQRAL4SH4BIRPLDUR6CLBI265LU3/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/DJIHWQRAL4SH4BIRPLDUR6CLBI265LU3/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "DJIHWQRAL4SH4BIRPLDUR6CLBI265LU3", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/UTTFJ2ULUQGMWLBEYTTO7F3VQC6TUI7Y/", "sender": { "address": "wa4cwi (a) bellsouth.net", "mailman_id": "4aa6f1e3f4cd4bf4b1492e47285ca527", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/4aa6f1e3f4cd4bf4b1492e47285ca527/emails/" }, "sender_name": "Jim McCullers", "subject": "[pacsat-dev] Re: AX5043", "date": "2023-04-27T14:14:31Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/UTTFJ2ULUQGMWLBEYTTO7F3VQC6TUI7Y/", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "The bandpass filter and LNA would proceed this circuit.\nMost LNAs I'm familiar with are single ended output.\nDifferential input is a bit of an oddity for an RF interface. I'm certain\nsomeone had a reason.\n\nIn our instance we will have a bandpass filter followed by an LNA followed\nby a 1:4 splitter for the four receivers.\nEach receiver will require some form of single end to differential\nconverter.\n\n73,\n\nJim McCullers\nWA4CWI\n\n\n\nOn Thu, Apr 27, 2023 at 03:14:21AM +0000, Jim McCullers via pacsat-dev\nwrote:\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\nJust curious, I'm not an expert on RF, but where does the LNA fit in here?\nIt seems like you could do the conversion from single-ended to differential\nusing an LNA if you were already using one.\n\nI've only played with single-ended designs, so this is something completely\ndifferent for me.\n\n-corey\n\n", "attachments": [] }