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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/F7U5LFB2PVOIPLG2A6UKR7KP3MT2SV5G/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "F7U5LFB2PVOIPLG2A6UKR7KP3MT2SV5G",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/JM5QY3KWPHHPGFKCWDFLFMWU3EUPQ2Z3/",
    "sender": {
        "address": "rlawn (a) uarts.edu",
        "mailman_id": "0ac1c2f5fa2045ee9fc6f2486b3ebcb6",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/0ac1c2f5fa2045ee9fc6f2486b3ebcb6/emails/"
    },
    "sender_name": "Lawn, Richard",
    "subject": "[amsat-bb] Re: Ts2000 with external preamps",
    "date": "2012-08-24T17:28:37Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/JM5QY3KWPHHPGFKCWDFLFMWU3EUPQ2Z3/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7GI7B5EOOHIW47H5NBOEGDE7G7OX7WKM/"
    ],
    "votes": {
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        "dislikes": 0,
        "status": "neutral"
    },
    "content": "This link is very useful and one I didn't find when I searched. It seems that with the particular preamp and xcvr I have a sequencer is needed to ensure dx is removed from the coax before rf is introduced. I think the easiest solution is to get a different preamp once I get my icom repaired. I could also swap it with the mirage I'm using at home with the 847 which I think is immune to rf or is switched. Unless you have an icom xcvr their preamps are a bad purchase.\nThanks everyone.\nRick\nW2jaz\n\n\n\n\nSent from my iPad\nhttp://RickLawn.com\n\n\n\nOn Aug 24, 2012, at 12:43 PM, \"Bob DeVarney W1ICW\" <[email protected]> wrote:\n\n> I suspect the issue with the Icom preamps and a TS-2000 is that the Icom\n> preamp does not appear to RF-sense.. if there's DC on the coax, it's in\n> line, if there's not DC on the coax, it's bypassed. I run the SSB\n> SP-2000 and it can handle 200 watts RF-sensed. No sequencer necessary\n> with the rig barefoot.\n>\n> The box you referenced on eBay protects the TS-2000 from amplifiers that\n> need a lot of current from the radio to switch them, or have high\n> voltage levels in the switching circuit ( bad design )\n>\n> I did find this link which had a lot of useful info:\n>\n> http://forums.qrz.com/showthread.php?287072-ICOM-AG-25-amp-TS-2000-Questions\n>\n> On 8/24/2012 12:15 PM, Lawn, Richard wrote:\n>> I have an icom preamp and wish I didn't. I'll send you the eBay link separately.\n>> Rick\n>>\n>>\n>>\n>\n\n",
    "attachments": []
}