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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/S3R3UQREUHGOERB7CBNMIQVAFF4DM357/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "S3R3UQREUHGOERB7CBNMIQVAFF4DM357",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/S3R3UQREUHGOERB7CBNMIQVAFF4DM357/",
    "sender": {
        "address": "w1pa (a) hotmail.com",
        "mailman_id": "40f14f46c3444acf902c22b658e82117",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/40f14f46c3444acf902c22b658e82117/emails/"
    },
    "sender_name": "Bill Acito W1PA",
    "subject": "[amsat-bb] Re: Pin assignments on a stereo mic input?",
    "date": "2011-08-02T17:32:39Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I think I figured this out. Everything is wired correctly (see below). The \nissue is that the recorder has an extremely wide dynamic range,\nhandling line level to mic input levels. It appears that the \"AGC\" looks at \nboth channels, and adjusts both based on the \"loudest\" --- so\nif I have a large audio line input on one side (R), and a small mic input on \nthe other (L) , the gain is set for the line and suppresses the mic into the \nnoise.\nIf I turn the volume down on the HT audio, the mic input comes up out of the \nnoise.\n\nSo I need a better, adjustable \"pad\" for the line level audio coming from \nthe HT (better than the attenuating patch cable I am using)--  I was \nthinking of a \"pot\" divider with the input on the outer terminals, and the \noutput off of the center pin---  should I use a big (100K) or small-value \n(100) pot? Linear, audio, or log taper?\n\nBill\nW1PA\n\n-----Original Message----- \nFrom: Bill Acito W1PA\nSent: Thursday, July 28, 2011 4:55 PM\nTo: [email protected]\nSubject: Pin assignments on a stereo mic input?\n\nOne more for today...  I am using a stereo digital recorder for logging. It\nhas a stereo 3.5mm mic socket.\nI am using a \"attenuating\" patch cable from the HT audio into a \"stereo\nsplitter\" plugged into the mic input\n(it has a stereo plug, and two mono sockets ---  tip and base, and ring and\nbase). The other side of\nthe splitter has a mic.  So the intent it to put the HT into one channel,\nand the external mic (recording me)\ninto the other channel, when recording.\n\nI am only hearing the HT audio on playback. I have a feeling that the plug\n\"base\" connection is not ground --\nit is on the ring or tip.\n\nAny one have or know the signal assignment on a recorder mic jack?  base,\nring , and tip?  I would assume\nit would also match the assignment of the mic input of a PC (if you know\nthat)?\n\nBill\nW1PA\n\n",
    "attachments": []
}