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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SH22NE4K33RYIA6TLCLLKPTFISLTCNKA/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "CAJCSnOYr3njHO5y6kSguqB9rEb3cSvRT96Fxu0JhR=SGgfA+zQ@mail.gmail.com",
    "message_id_hash": "SH22NE4K33RYIA6TLCLLKPTFISLTCNKA",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/X3QQS5F7BH5FOBKEBR2IVXDP7II5ZSUM/?format=api",
    "sender": {
        "address": "scott23192 (a) gmail.com",
        "mailman_id": "120e10e05ba14969a11da0a96d21e355",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/120e10e05ba14969a11da0a96d21e355/emails/?format=api"
    },
    "sender_name": "Scott",
    "subject": "Re: [amsat-bb] PicSat demodulator?",
    "date": "2018-01-17T18:24:48Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/57QJIAIJVCZ54S53RER63KTUMKRZXNDM/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I'm finally getting around to decoding a pass from this morning & made a\nscreen print if the settings might benefit anyone.\n\nPlease disregard the RF frequency display; I'm replaying a recording from\nanother system.\n\nhttp://www.qsl.net/k/k4kdr//images/2018-01-17--1455--picsat-screen.png\n\n73!\n\n-Scott,  K4KDR\n\n\n===========================\n\nOn Wed, Jan 17, 2018 at 1:01 PM, Nitin Muttin <[email protected]> wrote:\n\n> I have used the the software modem under G3RUH-BPSK folder. The audio is\n> fed from an Icom 821H using a Signalink USB + doppler correction, tried in\n> both FM and USB mode but no decode. Will try the signal centered on the\n> 2000 Hz mark as suggested.\n>\n> 73\n> Nitin [VU3TYG]\n>\n>\n> ------------------------------\n> *From:* Scott <[email protected]>\n> *To:* Ken Swaggart <[email protected]>\n> *Cc:* AMSAT BB <[email protected]>\n> *Sent:* Wednesday, 17 January 2018 10:28 PM\n> *Subject:* Re: [amsat-bb] PicSat demodulator?\n>\n> Despite the documentation, PicSat beacons so far have been 1k2 BPSK.\n>\n> There is a 1k2 BPSK software modem in:\n>\n> http://uz7.ho.ua/modem_beta/other-versions.zip\n>\n> ... and the demod on that would be USB.  Of course the bandwidth &\n> centering of the audio output is critical for this scheme; what works well\n> for me is to output the audio (I use HDSDR into VB Audio virtual cable) at\n> 4 KHz with the signal centered on the 2000 Hz mark.  If you match that 2000\n> Hz center on the 1k2 BPSK software modem screen, it decodes very nicely.\n>\n> -Scott,  K4KDR\n>\n> ================================\n>\n>\n> On Wed, Jan 17, 2018 at 11:19 AM, Ken Swaggart <[email protected]>\n> wrote:\n>\n> > Have been trying to decode the 435.525 MHz beacons from PicSat without\n> > success. The modulation is described as \"GMSK modulation with G3RUH\n> > scrambling\". I'm assuming the baud rate is 9600.  Normally I use UZ7HO's\n> > High-Speed SoundModem for telemetry reception.\n> >\n> > Tnx,\n> > Ken, W7KKE\n>\n",
    "attachments": []
}