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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SROVYMJLTJDWBJPJ33WRROWDQRL5OR3O/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "SROVYMJLTJDWBJPJ33WRROWDQRL5OR3O",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/6PVIS2SCTYIZUQXDVFHOFIPC2IXNO6L4/?format=api",
    "sender": {
        "address": "lucleblanc6 (a) videotron.ca",
        "mailman_id": "9e00802147284c40880480833e06c230",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/9e00802147284c40880480833e06c230/emails/?format=api"
    },
    "sender_name": "Luc Leblanc",
    "subject": "[amsat-bb] Re: ag-35 smoke test",
    "date": "2009-04-23T09:43:56Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/6PVIS2SCTYIZUQXDVFHOFIPC2IXNO6L4/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "On 22 Apr 2009 at 21:17, Yokshs wrote:\n\n> Hi all,\n> \n> Well, I finally did it. I let the smoke out of my Icom AG-35 preamp!\n> \n> I've read several such messages on the list over the years. Glad to know I'm \n> not alone in this club.. hi hi\n> \n> Before I replace the 3SK121 with an identical unit, I wonder if anyone has \n> used a similar FET with better NF? The AG-35 specs I found stated 1.5 dB NF \n> and 15 dB gain.\n> \n> I went through my collection of new parts and found a few Agilent ATF 54143 \n> hemt..\n> \n> The NF on similar designs is more like .38 to .5 dB and gain is 19-22 dB.\n> \n> I wonder if anyone else has had the wild idea of rebuilding their preamp? \n> I'd like to retain the enclosure and relays, etc.\n> \n> Several 54143 designs are available, such as this one:\n> \n> http://www.qsl.net/yu1aw/atf54143eng.htm\n> \n> Thanks for any help or ideas.\n> \n> 73,\n> \n> Kyle\n> K0KN\n> \nI fried my UHF one too...I order a couple from ICOM. With my very limited electronics building skills i cut the dead one leaving as much \nlegs as possible and i resolder the replacement over the cut legs. Not elegant but quick and effective. Is this is achieving the same \noverall previous gain figures? that i don't know but it works.\n\nI have another one to replace in a different type of preamp but the FET is below a lot of other components and he's flat mounted (No legs) \ni don't come up with a solution with this one?\n\n\n\"-\"\n\n\nLuc Leblanc VE2DWE\nSkype VE2DWE\nwww.qsl.net/ve2dwe\nWAC BASIC CW PHONE SATELLITE\n\n \n\n",
    "attachments": []
}