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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/4KAY7FZQZUIXHNPHYQELOBAW3HNCQ3JY/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "4KAY7FZQZUIXHNPHYQELOBAW3HNCQ3JY",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/4KAY7FZQZUIXHNPHYQELOBAW3HNCQ3JY/?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: Six Amateur Radio Satellites to Launch in March",
    "date": "2008-01-16T18:07:38Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "---------- Forwarded message ----------\nFrom: Bruce Robertson <[email protected]>\nDate: Jan 16, 2008 2:07 PM\nSubject: Re: [amsat-bb] Re: [SPAM] Six Amateur Radio Satellites to\nLaunch in March\nTo: David - M0ZLB <[email protected]>\n\n\nDavid (and JoAnne):\n\nCubesats seem regularly to elicit a kind of nostalgic sadness amount\nsome of us, of which I consider your letter a representation. Like\nyou, I take great pleasure in working other amateurs on voice or CW\nusing satellites equipped for such operations; like you, I'm a bit in\nmourning for FO-29. However, I respectfully suggest that there might\nbe a more hopeful, and ultimately more enjoyable, response to the\ncurrent situation in LEO. I hope you don't mind me engaging these\nissues on the list in the hopes of fostering understanding in our\ncorner of the hobby.\n\nI think this sadness is based in three ideas commonly held about\ncubesats which I would like to dispell. The first is a sense that we\nhave declining prospects for linear communications in LEO if the\nnumber of prospective digital or one-way birds far exceeds the number\nof linear ones. Now, with the growing popularity of cubesat projects,\nit is clearly the case that a whole whack of digital and one-way\ndigital birds are going up. But given that our bands are not being\ncongested by them, this does nothing to reduce the number of linear\nproject.\n\nIn fact, we have a healthy roster of up-coming linear projects:\nKiwiSat, and the Chinese CAS-1\nhttp://www.southgatearc.org/news/october2007/chinese_amateur_radio_satellite.htm\nfor example.The Indians are talking about a second Hamsat. There\nshould be much fun to be had in this area in the future. I'm not sure\nif any of these have prospects for a higher orbit like FO-29, but\nunder the conditions as JoAnne outlined them, this has nothing to do\nwith if or if not the cubesats fly.\n\nThe second misconception is that a typical cubesat's mission is\nsomehow tangential to the real purpose of the amateur satellite\nservice. However much I would like each and every one of this cubes to\ncarry a linear transponder -- because I like chatting with other hams\nthrough orbiting satellites -- I can't help but conclude that the\nCubesats are doing very important work. Imagine telling the builders\nof OSCAR-1 that they're bird is not in the Amateur Service! Imagine\ntelling them that in 50 years' time not only would there be a clutch\nof communications satellites for hams, but also university students\naround the world would collaborate with hams to operate birds that\ndownload pictures from orbit and conduct other experiments. Would they\nbe disappointed? Or would they see these missions as wonderously\nfulfilling the promise of OSCAR-1?\n\nA third misconception is that digital operations (in which almost all\ncubesats participate) are difficult to undertake and also tangential\nto the amateur sat. service. Using radio to remotely control and\ncommunicate with a device that is orbiting the earth every 90 minutes\nfrom 100 miles up is a brilliant use of the radio service!\nFurthermore, it's pretty darn easy: 1200 bps AFSK can be read with a\nsoundcard and a $99 HT; in fact, if you have a all-mode all-band\nradio, as cheap as the FT-817, the easiest bird to hear of all is\nLO-19, whose CW dialect booms in on my indoor quarter-wave whip.\n\nI can imagine that folks might think this is not exciting to do. I\nhave found that regular telemetry collection can be very interesting\nand engaging, perhaps more like amateur astronomy than linear\noperations on the birds. If you want exciting, join the chat line in\nthe days after a cubesat launch: teams of sleep-starved 20-somethings\ndesperate for news of their Darlings in Space. Imagine the chance to\nbe the first to report healthy telemetry from a new orbiting object.\nIt really is a great time to participate, and it takes quite a bit of\ntechnical skill: I've come to admire Mineo's JE9PEL setup and that of\nMike DK3WN as they routinely hear things first off the blocks.\n\nAs for the current launch manifest, in fact, it can be argued that\nDelfi-C3 represents a remarkable benefit to linear operators that\ncomes from the cubesat world. Rather than a disappointing singular\nexample of a linear bird among the upcoming cubesats, it should, I\nbelieve, be taken as an example of what we have to gain from this new\nage of LEO building and launching. When before has the amateur service\nbeen effectively *given* a bird which will eventually be in linear\nservice, with no appeal for launch or building costs? How can we\nensure that others will do the same? We should shower the Delfi team\nwith gratitude by giving them as much high-quality data as possible.\nAfter all, their research has direct bearing on our future work, too.\n\nBut Delfi-C3's transponder is ground-breaking in another way: it\npushes linear LEO satellites quite far down the cost/power curve. If\nthis provides reliable comms. to those of us with modest az/el yagi\nsetups, I think you will find other regional amateur teams jumping on\nthe cubesat format for linear comms. at a very reasonable launch price\n(what, launch at $40,000 per cube?) Even more exciting is the prospect\nthat university groups will team with AMSAT subgroups to make\nsomething like Delfi-C3: say, we hams will provide the comms for your\ndigital mission, and then in a year we get a linear transponder. Based\non the mission success of Delfi-C3, you can be assured that you'll get\ntons of data.\n\nThen there are amazingly clever ideas like Sat on a PCBoard and\nDragonfly. Both of these ask the question, \"how little power can we\nget away with in orbit, given the improving base stations?\"\n\nObviously this has gone far beyond a reply to David's letter. I hope\nit will be taken in the spirit it was written: as an encouragement\ntoward excitement. Heraclitus said, a man never walks through the same\nriver twice; similarly, we never will launch the same birds under the\nsame circumstances. But with the right attitude the river is always\nbeautiful and exciting, and so will be our hobby.\n\n73, Bruce\nVE9QRP\n\n\nOn Jan 16, 2008 8:23 AM, David - M0ZLB <[email protected]> wrote:\n> Thanks for the links Bruce, I too couldn't find any frequency info after\n> Trevor's initial posting!\n>\n> Sadly I see that with the exception of Delfi, everything else is digital.\n> Surely it is imperative that we get more easy sats up there for the newbies\n> to cut their teeth on and then progress! With the loss of FO-29 to virtually\n> everyone out of the JA footprint, its becoming a specialised hobby - there\n> is a need to get back to basics here I would have thought!\n>\n> David\n> KG4ZLB\n> AMSAT UK\n>\n>\n> Bruce Robertson <[email protected]> wrote:\n> I think what seems to be rubbish to you is directed at different\n> audiences: the local media, colleagues in the university and funding\n> organizations, for example, none of whom are interested in\n> frequencies.\n>\n> Happily, we hams have the summarizing website of Ralf Wallio, W0RPK,\n> http://showcase.netins.net/web/wallio/CubeSat.htm\n>\n> Frequency information is also available from IARU:\n> http://www.amsat.org.uk/iaru/\n>\n> 73, Bruce\n> VE9QRP\n>\n> On Jan 16, 2008 6:54 AM, Andrew Rich wrote:\n> > I wish some of these sat launchers would put as much effort into their\n> > webpages as their satellites.\n> >\n> > Most don't list frequencies and seem to me to be a completer afterthought.\n> >\n> > I get frustrated searching page after page of just rubbish to turn up\n> > nothing.\n> >\n> > Enlighten me\n> >\n> >\n> >\n> ----------------------------------------------------------------------------\n> > Andrew Rich VK4TEC\n> > [email protected]\n> > http://www.tech-software.net\n> >\n> >\n> >\n> >\n> >\n> > -----Original Message-----\n> > From: [email protected] [mailto:[email protected]]On\n> > Behalf Of Trevor\n> > Sent: Wednesday, 16 January 2008 6:16 AM\n> > To: AMSAT BB\n> > Subject: [SPAM] [amsat-bb] Six Amateur Radio Satellites to Launch in\n> > March\n> > Importance: Low\n> >\n> >\n> > It looks like they'll be six Amateur Radio satellites launching in March\n> > including Delfi-C3, see\n> >\n> > http://www.uk.amsat.org/\n> >\n> > 73 Trevor M5AKA\n> >\n> >\n> >\n> > __________________________________________________________\n> > Sent from Yahoo! Mail - a smarter inbox http://uk.mail.yahoo.com\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> > 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> 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",
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