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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/632RTXIQ2G5S55LIULTYKLG7NZSDG3MF/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "632RTXIQ2G5S55LIULTYKLG7NZSDG3MF",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/IQ2M7GBPXN33JS6RVBKXMKHSOZLZXMWL/?format=api",
    "sender": {
        "address": "erich.eichmann (a) t-online.de",
        "mailman_id": "6679c7cde510458f8117afd8289f9948",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/6679c7cde510458f8117afd8289f9948/emails/?format=api"
    },
    "sender_name": "Erich Eichmann",
    "subject": "Re: [amsat-bb] SDR's for satellite work, was: ===> Re: Yaesu FT-857D",
    "date": "2016-01-24T07:29:48Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VH6LL2WBTYZUHP6FQ7QNAKXBWVVRWFGX/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Clayton,\nYou wrote:\n\"The only drawback to the solution was having to swap coax lines between \n2m and 70cm. \"\nSatPC32 can optionally control a coax  antenna switch (called \"transfer \nswitch\" as far as I know)  that swaps the 2m/70cm antennas between the \nradios when you switch between v/u and u/v satellites.  The DTR pin of \nthe Radio 2 serial port can be used to either feed a CAT interface or to \nsteer the antenna switch (selectable in menu \"Options\").  Mike, W4UOO, \nsuggested such feature and I added it  a few months ago.\nThe feature requires a 1-transistor buffer between the DTR pin and the \ncoax relais. There is an example on my website www.dk1tb.de/AntSwitchIF.jpg\n73s, Erich, DK1TB\n\nAm 23.01.2016 um 03:37 schrieb Clayton W5PFG:\n> Graham,\n>\n> I know you specifically said you prefer Linux, but the solution which \n> brought me the most success was HDSDR+SatPC32.  The two applications \n> talk together well via CAT and a pair of virtual serial ports.  This \n> gives you full Doppler shift adjustment by computer control.\n>\n> My FT-857D was configured as a radio in SatPC32.  The FCDP+ was \n> configured as the other radio in SatPC32.\n>\n> If you moved the dial on the radio, there was full, tracking feedback \n> to SatPC32 and HDSDR.  If you tuned on the HDSDR, it adjusted the \n> radio as well.\n>\n> I made several hundred contacts on all the available satellites during \n> the time I was playing with this in the shack.\n>\n> The only drawback to the solution was having to swap coax lines \n> between 2m and 70cm.\n>\n> 73\n> Clayton\n> W5PFG\n>\n>\n\n",
    "attachments": []
}