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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/3NI3JR5UJV4FOX75B6G7UXY7P27ZALCV/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "3NI3JR5UJV4FOX75B6G7UXY7P27ZALCV",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/ZQX4H2NHC3WYL6AE5G3DYU5Q4ZGTIXRC/?format=api",
    "sender": {
        "address": "alex (a) kr1st.com",
        "mailman_id": "295825cc45654832a81730906beec2aa",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/295825cc45654832a81730906beec2aa/emails/?format=api"
    },
    "sender_name": "Alex",
    "subject": "[AMSAT-BB] Re: LVB Tracker firmware with multiple calibration points?",
    "date": "2021-03-19T17:26:29Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/2YBWJ54EDOOG6SQILUBHDR3QRDROSISK/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ZKUNKLUOFOVRDUR5LSRQIQGGGCE6LARV/?format=api",
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YMQATDPH4CQ2OXXYCJV3KP66CUOQXOJJ/?format=api"
    ],
    "votes": {
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        "status": "neutral"
    },
    "content": "Indeed that is the problem. \n\n73,\n--Alex KR1ST\n\n\n\nOn Mar 19, 2021, 1:00 PM, at 1:00 PM, Eric Garner <[email protected]> wrote:\n>Does error caused by the non-linearity exceed the beamwidth of your\n>antenna?\n>\n>Eric KI7LTT\n>\n>On Fri, Mar 19, 2021 at 8:50 AM <[email protected]> wrote:\n>\n>> Hi there,\n>>\n>> Has anyone modified the LVB Tracker software to allow for more\n>calibration\n>> points? If so, would you be willing to share this?\n>>\n>> The reason I ask is that I'm using an old Yaesu G-450XL to rotate my\n>> satellite beams. I was hoping to use a FoxDelta ST2 to control this\n>rotator\n>> but found that the feedback voltage is anything but linear. It seems\n>that\n>> the FoxDelta controller uses the LVB Tracker version 0.7 firmware. I\n>took a\n>> quick peek at the source code and it doesn't look to be too hard to\n>add\n>> calibration points for say every 30 degrees. Perhaps one every 90\n>degrees\n>> would be sufficient. Of course that depends also a little on the fact\n>if\n>> the modified code will fit in the 16F876.\n>>\n>> 73,\n>>\n>> --Alex KR1ST\n>>\n>>\n>>\n>> -----------------------------------------------------------\n>>\n>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum\n>available\n>> to all interested persons worldwide without requiring membership.\n>Opinions\n>> expressed\n>> are solely those of the author, and do not reflect the official views\n>of\n>> AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite\n>program!\n>>\n>> View archives of this mailing list at\n>> https://mailman.amsat.org/hyperkitty/list/[email protected]\n>> To unsubscribe send an email to amsat-bb-leave(a)amsat.org\n>> Manage all of your AMSAT-NA mailing list preferences at\n>> https://mailman.amsat.org\n>\n>\n>\n>-- \n>--Eric\n>_________________________________________\n>Eric Garner\n>\n>\n>------------------------------------------------------------------------\n>\n>\n>-----------------------------------------------------------\n>\n>Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available\n>to all interested persons worldwide without requiring membership.\n>Opinions expressed\n>are solely those of the author, and do not reflect the official views\n>of AMSAT-NA.\n>Not an AMSAT-NA member? Join now to support the amateur satellite\n>program!\n>\n>View archives of this mailing list at\n>https://mailman.amsat.org/hyperkitty/list/[email protected]\n>To unsubscribe send an email to amsat-bb-leave(a)amsat.org\n>Manage all of your AMSAT-NA mailing list preferences at\n>https://mailman.amsat.org\n\n\n",
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