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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/A7MRGSWLYYBCDFVUVXG7E32GKHTKZAQO/?format=api",
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    "message_id": "[email protected]",
    "message_id_hash": "A7MRGSWLYYBCDFVUVXG7E32GKHTKZAQO",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/YZK2WIW534AZWVWCMO72RK64RVL4MQAT/?format=api",
    "sender": {
        "address": "ka7fvv (a) yahoo.com",
        "mailman_id": "b37c8ceaba0749e6899a41918effb184",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/b37c8ceaba0749e6899a41918effb184/emails/?format=api"
    },
    "sender_name": "Scott Harvey",
    "subject": "Re: [amsat-bb] Has anyone made a satellite QSO with an orbiting\tISS\tastronaut?",
    "date": "2017-12-21T18:51:32Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/6XUPJCKFMDFYTNX4KKI24MQIVKB5C7QC/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
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        "status": "neutral"
    },
    "content": "George,\nISS has specific amateur frequencies they have setup to operate on.  Voice channels below are from the ISS Fan Club page for voice comms.  Of course during SSTV events they are heard on 145.800 and APRS on 145.825.  The ISS repeater UHF uplink and 145.800 downlink was active on an alternate UHF uplink for a while a couple months ago mainly for experimentation with two satellite that were launched to relay their signals on the VHF downlink.  I a few stations made contacts through it when it was on, myself included.  It is always worth checking both 145.800 and 145.825 on a pass over your QTH.  I had a quick QSO with Mike Foale a few years ago by doing that and just happened to catch him on the voice channel.  On the VHF channels there is no need to adjust for Doppler.  It would be nice to see the astronauts on the voice channel more.  I know the last couple of years they have not been active during Field Day.\nAmateur Radio Frequencies (Note: Only one mode active at a time) FM VOICE for ITU Region 1: Europe-Middle East-Africa-North Asia   \n   - Downlink 145.800\n   - Uplink 145.200\nFM VOICE for ITU Region 2&3: North and South America-Caribbean-Greenland-Australia-South Asia   \n   - Downlink 145.800\n   - Uplink 144.490\n\n\n73, Scott, KA7FVV\n President - KBARA  \nwww.kbara.org \n Co-Owner WA7DRE 443.525 System Fusion Repeater\nhttp://www.ka7fvv.net \n\n    On Thursday, December 21, 2017, 10:38:35 AM PST, George Henry <[email protected]> wrote:  \n \n Hopefully someone from ARISS will chime in if I am wrong, but I believe that\nthe astronauts are only allowed to use frequencies that have been\npre-approved and ground-tested for safety with the ISS subsytems.  \n\n\nAlso, you would only have to correct for the doppler shift of the satellite\nyou are listening/transmitting to.  The ISS would have to correct for the\ndoppler on their end.\n\nGeorge, KA3HSW\n\n\n-----Original Message-----\nFrom: AMSAT-BB [mailto:[email protected]] On Behalf Of Douglas\nQuagliana\nSent: Thursday, December 21, 2017 10:53 AM\nCc: AMSAT -BB\nSubject: Re: [amsat-bb] Has anyone made a satellite QSO with an orbiting\nISSastronaut?\n\nFriends,\n    Having hosted an ARISS contact myself earlier this year, I am well\naware of direct contacts\nbetween the astronauts and someone on the ground.\n\n    The relevant part of the question was the part about the QSO being\n*THROUGH an\nAMATEUR RADIO SATELLITE TRANSPONDER*.\n\n    If you are aware of a success (or a failed attempt) I would be\ninterested in knowing\nwhich astronaut and which amateur radio satellite was used.\n\n    Lastly, does anyone have a technical references for correcting\ncalculating the Doppler\nfor a QSO from ISS through a satellite to the ground?  (And no, you can't\njust change\nthe tracking program's ground station latitude/longitude every second to\nmatch the ISS\nsatellite subpoint.)\n\nThanks and 73,\nDouglas KA2UPW/5\n_______________________________________________\nSent via [email protected]. AMSAT-NA makes this open forum available\nto all interested persons worldwide without requiring membership. Opinions\nexpressed\nare solely those of the author, and do not reflect the official views of\nAMSAT-NA.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n\n_______________________________________________\nSent via [email protected]. AMSAT-NA makes this open forum available\nto all interested persons worldwide without requiring membership. Opinions expressed\nare solely those of the author, and do not reflect the official views of AMSAT-NA.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n  \n",
    "attachments": []
}