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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VAUPTNAS4TZNHM52RNAEZC232AEGTRD6/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "CAHKCqnCYZ7d1Lr=224HHSSkTH1wver-6PJstBgsVOKGz4tEN-A@mail.gmail.com",
    "message_id_hash": "VAUPTNAS4TZNHM52RNAEZC232AEGTRD6",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/2ETFYEDD2OUFXABCROPA5MVTHVFWF3SR/?format=api",
    "sender": {
        "address": "mjohns+K0JM (a) luther.edu",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Mark D. Johns",
    "subject": "Re: [amsat-bb] Recording TX & RX from one or two radios?",
    "date": "2018-05-18T12:24:19Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/TYHOQP34F7WYMGXVD5HRTXMOZDMJLXFE/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Any stereo recorder would allow two inputs, L & R.\n\nOn Fri, May 18, 2018 at 07:11 Don KB2YSI <[email protected]> wrote:\n\n> I would think there is a dual input recorder available, one for the RX one\n> for the mic, or use 2 recorders and splice the audio later.\n>\n> 73, Don KB2YSI\n>\n> On Fri, May 18, 2018, 04:25 Ken M <[email protected]> wrote:\n>\n> > Hi Patrick,\n> >\n> > Of course you are right about full duplex recording (kicking myself for\n> > not thinking of that!).\n> >\n> > For HF and all other half-duplex work, especially QRP from the field I’m\n> > looking for a wired solution so I don’t record background noise (and I\n> use\n> > a headset). Anyway, that’s not a satellite application so I’ll take the\n> > question elsewhere.\n> >\n> > Thanks!\n> > 73 Ken VA7KBM\n> >\n> > On May 17, 2018, at 5:21 PM, Patrick STODDARD (WD9EWK/VA7EWK) <\n> > [email protected]<mailto:[email protected]>> wrote:\n> >\n> > Ken,\n> >\n> > It really is simple, if you are working full-duplex. Just\n> > record the RX audio. You get the full exchanges, since\n> > you will hear yourself and the other stations. A splitter\n> > on the speaker of the radio receiving the downlink can feed\n> > audio to a recorder and headphones/earphone/earbuds you are\n> > using to hear the downlink.\n> >\n> > For working HF or working satellites half-duplex, I just use\n> > a recorder that picks up the radio's speaker audio and my\n> > voice with its microphone. Then I get both sides of those\n> > QSOs.\n> >\n> > 73!\n> >\n> >\n> >\n> >\n> >\n> >\n> > Patrick WD9EWK/VA7EWK\n> > http://www.wd9ewk.net/\n> > Twitter: @WD9EWK or http://twitter.com/WD9EWK\n> >\n> >\n> > On Thursday, May 17, 2018, Ken M <[email protected]<mailto:\n> > [email protected]>> wrote:\n> > Hello AMSATers,\n> >\n> > I'm looking to record both TX and RX audio to a digital recorder, either\n> > at the QTH or in the field (but mainly in the field), in either of two\n> > common scenarios:\n> >\n> > 1. TX from one radio, and RX from a different radio (as in satellite use\n> > with one radio for uplink and one for downlink).\n> >\n> > 2. TX/RX from the same radio (as in a full-duplex radio for FM\n> > satellites, or for non-satellite use).\n> >\n> > I'm wondering if you know of a device (or a published circuit design)\n> > that will allow TX/RX recording while isolating the radios from each\n> > other and/or a radio's TX from it's RX, while linked to the same\n> > recorder? I have to believe this is a well-solved problem within the\n> > satellite radio community but I haven't found too many ideas for field\n> > use. This is seems to be an easier problem to solve at the QTH if\n> > recording to computer, with various sound interfaces (Signalink, etc.)\n> > so my main interest is in field use with a digital recorder so I can\n> > record my QSO's while juggling two radios plus antenna, etc. The easy\n> > alternative is just to record the RX side, which is easy, and works for\n> > logging but doesn't give you the full exchange.\n> >\n> > Thanks & 73!\n> > Ken VA7KBM\n> >\n> >\n> > _______________________________________________\n> > Sent via [email protected]. AMSAT-NA makes this open forum available\n> > to all interested persons worldwide without requiring membership.\n> Opinions\n> > expressed\n> > are solely those of the author, and do not reflect the official views of\n> > AMSAT-NA.\n> > Not an AMSAT-NA member? Join now to support the amateur satellite\n> program!\n> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> >\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions\n> expressed\n> are solely those of the author, and do not reflect the official views of\n> AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>\n-- \n--\nMark D. Johns\nKØJM / MØGZO / ex-9H3DJ / ex-KØMDJ\nBrooklyn Park, MN USA   EN35hd\n-----------------------------------------------\n\"Heaven goes by favor; if it went by merit,\n   you would stay out and your dog would go in.\"\n    ---Mark Twain\n",
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