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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BNBCU7YVICZPSXU7AWSWLOZ3TXRRN6FL/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "CAHKCqnAm9BQErW3h5Lz-Kw78ZkmyPP=8M7LKGEE+DfJms-e2yQ@mail.gmail.com",
    "message_id_hash": "BNBCU7YVICZPSXU7AWSWLOZ3TXRRN6FL",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/H36P5OYOYQ2K4CFULVXGJMMQIICCA3Y4/?format=api",
    "sender": {
        "address": "mjohns+K0JM (a) luther.edu",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Mark D. Johns",
    "subject": "Re: [amsat-bb] SSTV on Linears",
    "date": "2019-12-31T22:39:01Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/6OS7GXJBNVCKV4CLESNE6MCMBXONBDFB/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "PLEASE do NOT use FM on a linear transponder!!!\n\nThere are very good reasons why there are FM satellites and there are\nlinear satellites. FM on a linear passband screws things up in a number of\nways, as can be heard whenever a linear has Mexican taxi cabs in its\nfootprint.\n\nPlease, just don’t even suggest such a thing.\n\nOn Tue, Dec 31, 2019 at 11:30 Scott via AMSAT-BB <[email protected]> wrote:\n\n> Heard you but was caught off-guard... I assumed you would TX on FM, but it\n> seemed to be the normal USB downlink.\n>\n> Won't be around for the upcoming CAS-4A pass, but have fun & good luck!\n>\n> -Scott,  K4KDR\n>\n> =======================\n>\n> On Tue, Dec 31, 2019 at 11:13 AM Roy Dean via AMSAT-BB <[email protected]\n> >\n> wrote:\n>\n> > >\n> > > I did some SSTV years ago via AO-40. Really fun. But with a LEO\n> > > satellite, you will need to be actively adjusting for Doppler shift in\n> > > real time, as SSTV is frequency sensitive. You might try some of the\n> > > faster modes, especially since a pass is over in just a few minutes.\n> Greg\n> > > KO6TH\n> >\n> >\n> > I just did a dry run with my station, and think I'm ready to try an\n> actual\n> > pass.   I will be operating in \"Robot36\" mode on CAS-4B (17:00z) and\n> CAS-4A\n> > (17:30z) this afternoon as  first attempt.   I plan on shooting for the\n> > lower portion of the 2m passband (going to target the lowest published\n> > downlink frequency).  I will likely announce several times prior to first\n> > transmitting to fine tune.   My test image is very simple black and white\n> > call/grid.   If anybody hears it, please feel free to respond with an\n> image\n> > (short notice, I know), or voice.   If you don't hear me, then something\n> > came up to pull me away from my computer or I simply can't get in.\n> >\n> > --Roy\n> > K3RLD\n> >\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions\n> expressed\n> are solely those of the author, and do not reflect the official views of\n> AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb\n>\n-- \n***Sent from Gmail on iPhone***\nMark D. Johns, Ph.D. K0JM\nProfessor Emeritus of Communication Studies at\nLuther College, Decorah, Iowa USA\nNow residing in Minneapolis, Minn.\n------------------------------------------------\n\"Get the facts first. You can distort them later.\"\n---Mark Twain\n",
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}