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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/57QJIAIJVCZ54S53RER63KTUMKRZXNDM/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "57QJIAIJVCZ54S53RER63KTUMKRZXNDM",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/X3QQS5F7BH5FOBKEBR2IVXDP7II5ZSUM/?format=api",
    "sender": {
        "address": "vu3tyg (a) yahoo.co.in",
        "mailman_id": "ffb9caab06b3489aa9d16edd32c0d3b9",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/ffb9caab06b3489aa9d16edd32c0d3b9/emails/?format=api"
    },
    "sender_name": "Nitin Muttin",
    "subject": "Re: [amsat-bb] PicSat demodulator?",
    "date": "2018-01-17T18:01:35Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/5ETLJJDQPTLZDOCUK5GGOIP24BPGJTSE/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SH22NE4K33RYIA6TLCLLKPTFISLTCNKA/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I have used the the software modem under G3RUH-BPSK folder. The audio is fed from an Icom 821H using a Signalink USB + doppler correction, tried in both FM and USB mode but no decode. Will try the signal centered on the 2000 Hz mark as suggested. 73\nNitin [VU3TYG]\n\n      From: Scott <[email protected]>\n To: Ken Swaggart <[email protected]> \nCc: AMSAT BB <[email protected]>\n Sent: Wednesday, 17 January 2018 10:28 PM\n Subject: Re: [amsat-bb] PicSat demodulator?\n   \nDespite the documentation, PicSat beacons so far have been 1k2 BPSK.\n\nThere is a 1k2 BPSK software modem in:\n\nhttp://uz7.ho.ua/modem_beta/other-versions.zip\n\n... and the demod on that would be USB.  Of course the bandwidth &\ncentering of the audio output is critical for this scheme; what works well\nfor me is to output the audio (I use HDSDR into VB Audio virtual cable) at\n4 KHz with the signal centered on the 2000 Hz mark.  If you match that 2000\nHz center on the 1k2 BPSK software modem screen, it decodes very nicely.\n\n-Scott,  K4KDR\n\n\n================================\n\n\n\nOn Wed, Jan 17, 2018 at 11:19 AM, Ken Swaggart <[email protected]>\nwrote:\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_______________________________________________\nSent via [email protected]. AMSAT-NA makes this open forum available\nto all interested persons worldwide without requiring membership. Opinions expressed\nare solely those of the author, and do not reflect the official views of AMSAT-NA.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n\n\n   \n",
    "attachments": []
}