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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/22VHIJTKIH5RSR4PV2XU2TRCMP4HQ27I/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "0898EE3C414047338F464ED04A602481@KC6UQH",
    "message_id_hash": "22VHIJTKIH5RSR4PV2XU2TRCMP4HQ27I",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/EENP54BI7DYA2MSLTK7YXX7GAPM5LFVU/?format=api",
    "sender": {
        "address": "kc6uqh (a) cox.net",
        "mailman_id": "d9201820d18047e4a2772c86bda5e111",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/d9201820d18047e4a2772c86bda5e111/emails/?format=api"
    },
    "sender_name": "Art McBride",
    "subject": "[amsat-bb] Re: GMSK: Time for a stupid question :-)",
    "date": "2009-02-26T06:37:13Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/TGIRGWQXAZTBIH3YQDHR2HT2VZKLEQZR/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/HL4WW53V5SEM7WT22FA5UGRPKLUESSFW/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Henk,\nI would suggest FM 2.4 KHz deviation. You will need a Gaussian filter after\nthe 4800 baud digital to make the logic transitions raised Cosine. The FM\nmodulation needs to be direct coupled not AC coupled. Never Had a TS 2000X\nstill using a ICom 820 disaster!\n\nGMSK provide for a modulation index of 0.5 making its performance a little\nworse than AM in performance. Works O K on strong signals, looses it on\nnoise, multipath, or interference. There is no capture effect that is\nnormally associated with FM and modulation indexes greater than 1 \nGood luck,\n Art, KC6UQH\n\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of Henk, PA3GUO\nSent: Wednesday, February 25, 2009 12:21 AM\nTo: [email protected]\nCc: [email protected]\nSubject: [amsat-bb] Re: GMSK: Time for a stupid question :-)\n\nThank you to those that replied !\n\n>From the feedback I understand that;\n- my TS2000X should be in FM mode, connected to the TNC via ACC2\n  (was indeed the case, thanks for confirming)\n- my external TNC, the PK-96, should be able to decode GMSK 9k6\n  (indeed I can decode AO51's downlink)\n\nSo...: I will need to team up with someone else in my footprint\nto see how the Cute digipeater (downlink) can be activated. At\nthis point I have not even heared it, so it can be my ERP\n(antenna or RF pwr) or the way my PK-96 is generating GMSK 9k6\nsignals (vs. how Cute expects them).\n\nThanks so far, I'll certainly share it if I have more success !\nHenk, PA3GUO\n\n> While trying to work Cute-II, I started to think about GMSK ...\n> (I have a PK96 external TNC hooked-up)\n>\n> My beautifull TS2000 has FM/AM/USB/LSB/CW modes.\n>\n> For GMSK, do I use FM or FSK ?\n>\n> Please only a gentle smile, I realize I do look silly asking this :-) Henk\n\n\n\n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n__________ Information from ESET NOD32 Antivirus, version of virus signature\ndatabase 3887 (20090224) __________\n\nThe message was checked by ESET NOD32 Antivirus.\n\nhttp://www.eset.com\n\n\n \n\n__________ Information from ESET NOD32 Antivirus, version of virus signature\ndatabase 3890 (20090226) __________\n\nThe message was checked by ESET NOD32 Antivirus.\n\nhttp://www.eset.com\n \n\n",
    "attachments": []
}