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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/PNBUHZQBSDI6AUL7JU4VXCXHVPB3ZCCI/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "PNBUHZQBSDI6AUL7JU4VXCXHVPB3ZCCI",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/VEWRSH7LHS4EGUNDM7AY6GMYIK3OIQL5/?format=api",
    "sender": {
        "address": "ve9qrp (a) gmail.com",
        "mailman_id": "4d6061838db34aba9a1c4722addebfaf",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/4d6061838db34aba9a1c4722addebfaf/emails/?format=api"
    },
    "sender_name": "Bruce Robertson",
    "subject": "[amsat-bb] Re: Digital modes with a handheld",
    "date": "2008-07-24T23:12:21Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VEWRSH7LHS4EGUNDM7AY6GMYIK3OIQL5/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "On Wed, Jul 23, 2008 at 3:17 PM, Allen Vinegar <[email protected]> wrote:\n> There are several good howto tutorials to help people get started on the FM birds with a handheld. How about one for digital mode using a Kenwood TH-D7AG? Or is it not practical to attempt digital mode with a handheld? I am new to the satellites and have much to learn.\n>\n> Thanks for any help you all can provide.\n>\n> 73, Al, W8KHP\n\nAl, that's a good question. I have found the AMSAT digital satellites\nguide to be a very good read, though I don't think it provides exactly\nwhat you want.\n\nIn lieu of a guide like you describe, I would recommend that you use\nthe FM guide to understand the tuning and reception issues and, at the\nsame time, experiment with similar terrestrial digital modes.If you\nhave a TH-D7AG, then start with APRS, since there is certain to be\ntraffic on that mode in your area, and it's really easy to see when\nthe ht is receiving data. Then combine the two skills to receive a\nbird that is running APRS.\n\nA more advanced skill is to use the tnc inside the Kenwood to talk to\na program on your laptop. Again, test that this is working\nterrestrially first. Use 1200 bps at first, and test it using local\nAPRS signals and a terminal program on your computer. There are lots\nof cubesats, etc that run this mode many of these projects provide\nprograms that decode their telemetry. When this is working, go up to\n9600 baud and download from GO-32 and AO-51's telemetry.\n\nIf you can get your hands on a SSB radio, like a FT-817, give Delfi C3\na shot. Its software does soundcard demodulation of the telemetry\n*and* provides a graphical display of the meaning of the telemetry\n*and* uploads your frames to the folks in the Netherlands.\nFlat-out-cool, and it sounds like pretty soon we won't be able to play\nwith this because the bird will become a communications satellite :-)\n\nA severe warning, though: collecting digital information, especially\ntelemetry, can be quite an addicting activity. After all, the other\nradio operator is on the ground, but the spacecraft's telemetry is all\nabout the conditions in that hostile and fearsome territory, outer\nspace.\n\n73, Bruce\nVE9QRP\n",
    "attachments": []
}