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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ROHJDQ5XUA3IYYNG4FPA3OITVPQRM7DG/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "ROHJDQ5XUA3IYYNG4FPA3OITVPQRM7DG",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/ROHJDQ5XUA3IYYNG4FPA3OITVPQRM7DG/?format=api",
    "sender": {
        "address": "amsat-bb (a) wd9ewk.net",
        "mailman_id": "21664df01bef4757931b7cdb42a9e768",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/21664df01bef4757931b7cdb42a9e768/emails/?format=api"
    },
    "sender_name": "Patrick STODDARD (WD9EWK/VA7EWK)",
    "subject": "[amsat-bb]  SSB via satellite (was Re: Protocol)",
    "date": "2011-01-12T16:11:30Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Gordon!\n\n> Because AO-51 is the most reliable satellite in terms of actually\n> finding and working it.  SO-50 seems to be almost impossible to lift,\n> and the linear transponder ones require extremely expensive radios.  You\n> can work AO-51 with an el-cheapo dual-band handie and a homebrew\n> antenna, and you can work /P really easily because you don't need a\n> rotator or satellite tracking software.\n\nSO-50 isn't impossible, but your receiver and antenna system need to\nbe able to deal with weaker signals than you hear from other FM birds.\nSO-50 is transmitting at 250mW, and it gets regular workouts on passes\nover here.  AO-51 is now running with more power on the downlink than\nusual, which will make the difference between it and SO-50's downlink\nmore noticeable.  PL tones are also mandatory on SO-50, to turn it on\n(transmit briefly with 74.4 Hz) and to talk through the satellite (67.0 Hz).\n\n> I'm not going to rush out and buy a VHF/UHF SSB rig just to work the odd\n> pass, especially since I've never heard anyone on the linear birds.  I\n> don't know if VO-52 works - I've never even heard its beacon - and AO-27\n> is only ever enabled over the US, making it useless for most of the\n> world.  It would be great to attempt a QSO through AO-7 but again I'm\n> not going to go and buy a rig that costs as much as a car to do it.\n\nI would not characterize a Yaesu FT-817ND and Kenwood TH-F6A (outside\nNorth America, TH-F7) as \"extremely expensive\" radios.  Sure, these two\nradios are more expensive than a single 2m/70cm FM HT, even more\nexpensive than the new TH-D72A HT, but not like the prices were on all-\nmode 2m and 70cm gear were in years past.  I regularly work the linear\nbirds with either two FT-817NDs or one 817 and a TH-F6A receiving the\ndownlink.  With an FT-817ND, you also get a radio capable of QRP HF and\n6m operation.  The 817s have been in production for a decade, so you\ncould also look at picking up a used 817 (or two) to try SSB on the birds.\nThe 817s have a CAT control port on them, so they can be controlled with\nsoftware like SatPC32.  Two 817s can be controlled by SatPC32, if you are\nlooking for an all-mode full-duplex satellite ground station with those radios.\n\nBesides an 817, you could also look at radios like the IC-706Mk2 or Mk2G,\nIC-7000, FT-857, FT-897, etc.  You'd need a larger battery to run them\nthan you would an 817, but all of these are capable of being used for SSB\nsatellite work.\n\nVO-52's beacon is just a carrier on 145.936 MHz.  It is on all the time,\nand the VO-52 downlink is easy to copy.  It is a great satellite for someone\ninterested in starting out on SSB via satellite.  AO-27 is available on\ndaylight passes over the Northern Hemisphere, not just over North America.\nIf the web site is accurate, you can get an updated schedule for AO-27\nfor the upcoming 24 hours at:\n\nhttp://www.ao27.org/\n\nYou can also download a program that shows when AO-27 will be on for\nany particular date from:\n\nhttp://sites.google.com/site/ao27satellitescheduler/\n\nThe SSB birds are not as busy as the FM birds, but you can find activity\non them.  Many will work SSB with computer-controlled radios or\nantennas/rotator, but I - and others - do this without the benefit of computer\ncontrol.  It may be \"old school\", but with practice it is possible.  If you are\nlooking to work these birds from a portable station, that is entirely possible.\nI do that all the time - at hamfests, parks, from the back of my truck, with\nmy gear laid out on the roof or trunk of a rental car, wherever I happen to\nbe.  All of my satellite station, excluding antennas and items deemed unsafe\nin a carry-on bag for air travel, fit in an old laptop bag.  The antenna and\nother stuff go in a duffel bag that gets checked for air travel.  You don't get\nthe numbers of QSOs on an SSB bird that you might on AO-51, but I have\nfun with it.\n\n73!\n\n\n\n\n\n\nPatrick WD9EWK/VA7EWK\nhttp://www.wd9ewk.net/\n\n",
    "attachments": []
}