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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/EMGGS7CRRRJWBAPLFCJBW53QGMK6X4MK/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "EMGGS7CRRRJWBAPLFCJBW53QGMK6X4MK",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/BE4K2C3YH6ULDIBUD2GZ2TJAMDCKKUXS/?format=api",
    "sender": {
        "address": "oz1my (a) privat.dk",
        "mailman_id": "b2f56900318d4d1193159750f39aa3fe",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/b2f56900318d4d1193159750f39aa3fe/emails/?format=api"
    },
    "sender_name": "OZ1MY",
    "subject": "[amsat-bb] Re: Use of ICOM 910 for AO-51 L-Band BBS Uplink?",
    "date": "2009-08-20T12:56:53Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/AJP7GF2ICLTTBK7DSSBNJ4HMQGJWPZER/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Jim,\nI use the same setup - but for analog uplink.\nAntennas are two 19 turn helix stacked about 2 wavelength above\none another. The combined gain is 18 dBiC.\nThat works most of the time - but EIRP is a bit low when AO-51 is at\n3000 km range.\nFor the digital uplink I think you need more EIRP.\nEither add a PA with 30 to 50 W out or larger antenna(s).\n73 OZ1MY\nIb\n----- Original Message ----- \nFrom: \"Jim Heck\" <[email protected]>\nTo: <[email protected]>\nSent: Thursday, August 20, 2009 11:05 AM\nSubject: [amsat-bb] Use of ICOM 910 for AO-51 L-Band BBS Uplink?\n\n\n> Hi Folks,\n>\n>   I would be interested to know if anyone is using an ICOM 910 with the\nL-Band\n> module for Ao-51 uplink on the BBS? (The optional L-Band unit for the 910\nruns 10\n> watts according to the book).\n>\n>   I am particularly interested to know what type/gain of antenna I would\nneed to get\n> a reliable up link. I am planning to use about 20 metres of Ecoflex 10,\nwhich will\n> introduce a loss of something like 3 Dbs.\n>\n>   I know that the LBand/Digital up link is currently off, just gettting\nready for\n> the next 'on' period!\n>\n> 73s\n>\n> Jim G3WGM\n>\n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>\n\n\n",
    "attachments": []
}