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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/GSDEKBUFCYRJTP5G3DIO2KVDJTMCBSMG/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "CAJCSnOZoeJ_GJ-9oYSgctikwERr_dBG0kUmqE4iafTNPSM+Rhw@mail.gmail.com",
    "message_id_hash": "GSDEKBUFCYRJTP5G3DIO2KVDJTMCBSMG",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/GSDEKBUFCYRJTP5G3DIO2KVDJTMCBSMG/",
    "sender": {
        "address": "scott23192 (a) gmail.com",
        "mailman_id": "120e10e05ba14969a11da0a96d21e355",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/120e10e05ba14969a11da0a96d21e355/emails/"
    },
    "sender_name": "Scott",
    "subject": "[amsat-bb] Notes on PSAT / PSK31 decoding",
    "date": "2018-11-04T17:43:22Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi everyone.\n\nIf you would like to make some satellite contacts using a digital mode that\ndoesn't require linux, it turns out that the PSK31 transponder on PSAT\n(NO-84) works very well.\n\nA few days ago I posted that I had successfully used PSAT's PSK31\ntransponder:\n\nhttp://www.amsat.org/pipermail/amsat-bb/2018-November/070178.html\n\nI had always seen in the documentation that the 435.350 FM downlink from\nPSAT transmitted PSK31 and I had even decoded its telemetry beacons using\nFLDigi.  However, until a new How-To came out last week, I had never\nfigured out how to use the 10m USB PSK31 uplink to add my own signal to\nPSAT's 70cm downlink stream.\n\nHere is that excellent How-To from 2M0SQL:\n\nhttps://www.2m0sql.com/2018/10/29/using-the-no-84-psat-psk-transponder/\n\n... and I am making this post to share a couple of additional notes.\nPlease forgive if this is old news, but it was new to me.\n\nI have uploaded some screen shots to illustrate.  First, please note the\nbottom waterfall in this image showing -2- PSK31 streams in PSAT's downlink:\n\nhttps://www.qsl.net/k/k4kdr//how-to/psat-psk31/fldigi-decoding.png\n\n... the stream at the 310 Hz. mark is PSAT's telemetry beacon, but the mark\nat 2369 is a repeat of what I am transmitting on 28.120!\n\nSince the key to this is FLDigi's ability to decode multiple streams at the\nsame time, it's extremely helpful to SEE each of those streams separately.\nIn the following image, please note how to enable the left-hand \"channels\"\nbrowser window in FLDigi:\n\nhttps://www.qsl.net/k/k4kdr//how-to/psat-psk31/fldigi-view-channels.png\n\n... and this is a matter of personal preference, but I find that the most\nhelpful display setting in that left-hand window is to label each stream\nwith the audio frequency it's on:\n\nhttps://www.qsl.net/k/k4kdr//how-to/psat-psk31/fldigi-freq-view-settings.png\n\n... when you click on any of those decode streams, that selects which\nstream appears in the main upper decode window in FLDigi.\n\nSo that's the decode side of this.  If you combine that with the\ninformation provided in the How-To by 2M0SQL on how to transmit, we ought\nto be able to get some 2-station or even multi-station QSO's logged.\n\nFinally, if you don't have 10m transmit capability -or- even if you only\nown an FM radio, this is a digital mode that you can absolutely decode to\nenjoy another aspect of one of our long-orbiting satellites.\n\nIf you would like to practice using FLDigi to decode the PSK31 signals from\nPSAT, here is the audio file that produces the two streams you see in the\nscreen shots I have mentioned above:\n\nhttps://www.qsl.net/k/k4kdr//how-to/psat-psk31/psat-psk31-sample-audio.wav\n\n-Scott,  K4KDR\n",
    "attachments": []
}