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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ABASPPXEO3RZP3BLFWQWUO2SJ2FMNYJB/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "ABASPPXEO3RZP3BLFWQWUO2SJ2FMNYJB",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/BLNS6U7HKUEGCK564DQIG5LZUTMOYFA3/?format=api",
    "sender": {
        "address": "kg4zlb (a) googlemail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "David - KG4ZLB",
    "subject": "[amsat-bb] Re: FM satellite operations again again over Europe",
    "date": "2009-10-13T20:53:16Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ABE56KTLZULQVZ6FVF6TJX2KJIQBFEAA/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/6KMOSKFQK7QNN744QVCL4LDKUKMJCK2B/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Perhaps these could be translated into Spanish!\n\nDavid\nKG4ZLB\n\n\n\nEric Knaps, ON4HF wrote:\n> Hello all,\n> I found these nice rules from VK3JED:\n>\n>  1. First and foremost is to listen before and while (if possible)\n>      transmitting, to ensure your transmissions don't drown out a weaker\n>      station who may be on the edge of a pass or running QRP. Satellites\n>      should be an alligator free zone. It is strongly recommended that you\n>      set your station up so you can monitor the downlink while\n>      transmitting, so you can hear how well you are accessing the satellite\n>      and whether you accidentally clobbered someone else. Similarly, if you\n>      can't hear the transponder, don't transmit. Do something else more\n>      productive, such as realign your receiving antenna to improve\n>      reception.\n>   2. Be brief. Because the traffic levels can be quite high, contest style\n>      (callsign/signal report/next station) operation is the most\n>      appropriate for most situations. Many stations also exchange QTH and\n>      first names, which is OK if time permits. If transponder activity is\n>      low, you can have a brief chat, but the opportunities for this are\n>      becoming rare now.\n>   3. Take turns. If you've just worked a handful of stations, be polite and\n>      hand the transponder over to someone else so they can work a few.\n>      There may be an opportunity to call back in later during the pass and\n>      work some different stations as the satellite passes over different\n>      areas, and others will appreciate your courtesy.\n>   4. When calling, a simple announcement (e.g. \"This is VK3JED listening\n>      SUNSAT\" or even \"VK3JED listening\") will suffice, like it does on a\n>      terrestrial repeater. Anyone within transponder range will hear your\n>      call. A short CQ call (\"CQ SUNSAT, this is VK3JED\") is OK too. Long CQ\n>      calls waste transponder time and frustrate everyone listening. Save\n>      the long CQs for HF, where they're appropriate. Only call CQ when\n>      there's a distinct lack of activity, such as at the very start of a\n>      pass and sometimes late in the pass after everyone else has finished.\n>      A well placed CQ call late in a pass might alert someone ahead of the\n>      satellite that a pass has just commenced over their QTH.\n>   5. Wait your turn. If a QSO is in progress, wait until it finishes before\n>      putting in your call. Butting in too soon is rude and wastes precious\n>      transponder time as the stations involved in the QSO have to repeat\n>      themselves due to your QRM.\n>   6. Don't tune up! Believe it or not, there are stations who test their\n>      satellite access by dropping a carrier over the top of everyone and\n>      perhaps announcing \"Hello hello\". Simply putting out a call at the\n>      appropriate time will provide all the signal checks you need (and get\n>      you a worthwhile contact! :) ), without annoying everyone else on the\n>      transponder. If you're really that doubtful about your equipment,\n>      perhaps connect your dummy load, test in the shack and try again\n>      another day, rather than disrupting everyone else. If you just want to\n>      hear your voice, well a tape recorder or a pair of walkie talkies will\n>      do just as well...\n>   7. Reward good operation. If you're answering a call, why not reward the\n>      good operators and put the alligators last on your list of priorities.\n>      If all satellite users favour good operators, perhaps everyone will\n>      learn that good ops have the highest QSO rates and earn the most\n>      satellite awards. :-) Peer pressure is a powerful motivating force, as\n>      any teenager will know (but probably not admit to! :-) ).\n>   8. Use the minimum power necessary. While power levels are not critical\n>      on FM satellites (unlike linear transponders where an excessively\n>      strong signal can affect other QSOs on the transponder), using the\n>      minimum power necessary allows you to easier tell if you're 'doubling'\n>      with someone else. For the South African SUNSAT satellite, you\n>      shouldn't need more than 5 watts into a basic (1/2 wave handheld or\n>      turnstile) antenna, perhaps a bit more if the antenna is setup for\n>      terrestrial operation, to overcome radiation pattern limitations. As\n>      an example of good operation, recently one station who had multiple\n>      beams wound his power back to 20 mW. The signal into the bird was full\n>      quieting, but it was still possible to tell if someone else was\n>      underneath his signal. If he had run 100W, he couldn't have known if\n>      he'd stepped on anyone else, due to the capture effect of FM.\n>\n> If everyone follows these simple guidelines (which are basically common\n> sense and courtesy), then FM satellite operation can be enjoyable for\n> everyone, regardless of whether you run a sophisticated satellite station\n> or a couple of handhelds from the back yard. FM satellite transponders are\n> like FM repeaters, only more extreme. On the positive side, they can enable\n> minimally equipped stations thousands of kilometres apart to communicate\n> with ease. On the other hand, the worst aspects of repeaters can be\n> experienced as well, such as congestion, doubling and even the odd idiot\n> dropping carriers! (I don't know how the idiots manage to always have a\n> very strong signal, even when the repeater is 800 km off the ground!). The\n> operators themselves (that's YOU!) have the power to determine what sort of\n> experience FM satellite operation will be in the future.\n>\n> 73,\n> ON4HF.\n>\n> Eric Knaps\n> Waterstraat 30\n> B-3980 Tessenderlo\n> Belgium\n>\n> Tel. +32472985876 (mobile)\n>\n> http://www.on4hf.be\n>\n>\n>\n> Gary Lockhart schreef:\n>   \n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>\n>   \n\n",
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}