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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/TBVOLPT3SHMLX5P45WTNETIHI5JFNWRT/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "CAN6TEUeNjjwiChMEvjiUEQyc+9futtfdzfoZD14ooUiQhvTy=A@mail.gmail.com",
    "message_id_hash": "TBVOLPT3SHMLX5P45WTNETIHI5JFNWRT",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/HPLIBN3F3EQE7FKD3TOVHFQJG4EXBA2W/?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": "Re: [amsat-bb] Southern CA Satellite Presentations",
    "date": "2016-06-27T03:00:01Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/IN4JLCGSPY2ZQ2ENO2RQQRGER4245YPX/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Oliver,\n\nHams don't have to spend $250 to try satellites anymore. Yes, the\nChinese-made radios come with varying quality control. If you get\ngood examples of those radios, you might only spend $50 or $60 for\ntwo radios. I have worked SO-50 with two Baofeng HTs - two UV-5Rs,\nand one UV-5R with one UV-82. The two UV-5Rs cost about $60, and\nthe UV-82 was about $37 when I bought it in 2014. I even used a\nBaofeng pair (transmit from a UV-82, receive with a UV-5R) for a\nhamfest demonstration in May 2014 - illustrating that working\nsatellites doesn't cost much money for the radios.\n\nIf a ham already has a decent dual-band HT, a $25 or $30 Baofeng HT\nas the transmit radio in a full-duplex FM satellite station is\n(my opinion) not asking too much. Are there hams who can't afford even\n$25 or $30 for another radio? Sure. But at these prices, the arguments\nagainst actively encouraging full-duplex operation pretty much go away.\n\nWhy do I say that the Baofeng HT should be used as the transmit\nradio, and not the receive radio, in the two-radio example above?\nIn most cases, the non-Chinese-made HTs have better receivers\nfor satellite work than the Chinese-made HTs. There are some\nChinese-made dual-band HTs have receivers that do a good job with\nour FM satellites, and I had written about some of them when I\nreviewed a few for use with AO-85 a few months ago in a series\nof posts on this list.\n\nYes, hams don't need to go full-duplex to work FM satellites,\nespecially those with 2m uplinks like SO-50 or LilacSat-2.\nThis is a\ntrue statement. I even worked a LilacSat-2 pass last night during\nField Day using a single Wouxun KG-UV9D HT - a radio that can work\nU/V satellites like AO-85 and the upcoming Fox-1 FM satellites\nfull-duplex, but not SO-50 or LilacSat-2 due to desense issues\nwhen transmitting on 2m. The audience I had last night saw that it\nwas possible, but also saw me working SO-50 and XW-2F full-duplex\nearlier in the day, and saw the advantages of working satellites\nfull-duplex.\n\nThe antennas can be homebrewed. The WA5VJB \"Cheap Yagi\" design is\na great dual-band Yagi, for those not interested in spending\n$125 to $150 for an Elk or an Arrow. Using a 2m/70cm antenna is\ndesirable over the 2m-only Yagis of various designs, especially\nsince we now have FM satellites that require a 70cm uplink like AO-85\nand the other Fox-1 FM satellites in the pipeline.\n\nThe best part about all of this - all of this gear can be used for\nnon-satellite activities. Local repeaters, simplex, and (when\npaired up with a TNC or software on a computer) even packet. The\npacket setup could be used with terrestrial packet, or with the\norbiting digipeaters on the ISS and NO-84. This is a lot better than\nthe situation in the past for working satellites.\n\nAnd, in keeping with the title of this thread, I will give a\nsatellite presentation in southern California during September.\nI will give a presentation at the Jet Propulsion Laboratory\nAmateur Radio Club's monthly meeting on 23 September 2016 in Pasadena,\ndiscussing current and upcoming amateur satellite projects.\nI'm looking forward to making my second trip for a presentation\nin California this year, after a presentation in Long Beach last\nMarch. Along with answering questions about my presentation,\nI'll be happy to answer other questions about satellite operating\nfrom those in attendance at that meeting.\n\n73!\n\n\n\n\n\n\nPatrick WD9EWK/VA7EWK\nhttp://www.wd9ewk.net/\nTwitter: @WD9EWK\n\n\n\n\n\nOn Mon, Jun 27, 2016 at 2:20 AM, Oliver Krystal <[email protected]> wrote:\n\n> The cheap radios can have issues with harmonics desensitizing them.\n>\n> While I also agree that full duplex is very useful, I think you are asking\n> to much of a new ham (at least) to spend close to $250 in radios to try\n> something.  That's if they build their own antenna and have feedline handy.\n>\n> Now, if a ham happens to have two HTs of decent quality to be put to use,\n> that is another story.\n>\n>\n",
    "attachments": []
}