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GET /hyperkitty/api/list/[email protected]/email/MD2DWDDCTAIQ7QRV66IOVDBYRR33M6VY/?format=api
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MD2DWDDCTAIQ7QRV66IOVDBYRR33M6VY/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "000c01c7d7c5$13f1eea0$0200a8c0@Tanguray", "message_id_hash": "MD2DWDDCTAIQ7QRV66IOVDBYRR33M6VY", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/5FEUV2NODGW24WPUEJU3INKNY2SIBYYY/?format=api", "sender": { "address": "rogerkola (a) aol.com", "mailman_id": "8323dbe496014835b5bd2be9b5ff6f66", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/8323dbe496014835b5bd2be9b5ff6f66/emails/?format=api" }, "sender_name": "Roger Kolakowski", "subject": "[amsat-bb] Re: AO-7 report.- Band switching", "date": "2007-08-06T00:59:41Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7SWRF5WEOWWTATXEKANGHZLKAPKUQEJB/?format=api", "children": [ "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/JXSUTWRXI47C2YSWLCP3KKC7UHZM225M/?format=api" ], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Hi John...\n\nThe second \"source\" I quoted is supposedly from Jan King himself and was a\nstatement he was supposed to have made in an email \"after\" AO-7 was\n\"reborn.\"\n\nI would love to hear your version of what will happen when there is a lack\nof eclipse for the satellite...I personally don't see the significance of a\ncrystal controlled clock on a 24 hour timer which has similar discreet\ncomponents which are as likely to fail as a counter.\n\nAs for me...I can wait to find out, but as for your opinion of AMSAT, I find\nthat it is only the \"experts\" who try to justify their opinions without\nfacts that are criticized by the people \"in the know.\"\n\nAre you saying AO-7 went up without a timer? Now that's a headline. Are you\nsaying the timer is no longer functioning? That's entirely possible. Other\nthan conversations with Jan...how is it you determined that the timer is no\nlonger \"in the mix?\"\n\nIf AO-7 comes out it's \"final\" eclipse in Mode A, will it stay there?\n\nEnquiring minds want to know...\n\nMany thanks!\n\nRoger\nWA1KAT\n\n----- Original Message ----- \nFrom: \"John Hackett\" <[email protected]>\nTo: <[email protected]>\nCc: <[email protected]>; <[email protected]>\nSent: Sunday, August 05, 2007 1:42 PM\nSubject: Re: [amsat-bb] Re: AO-7 report.- Band switching\n\n\n> Roger,\n> I have written to James (Duffy) direcly and have given him the\n> facts as I know them.\n>\n> I can assure you that the information in the 1974 Amsat newsletter you\nrefer\n> to is *NOT* ...\n> I repeat 'NOT' correct ... with reference to the timer.\n>\n> Just because something \"APPEARS\" to be so, and Amsat \"SAYS\" it is so ...\nit\n> doesn't necessarily turn that information into a 'FACT' Roger.\n>\n> I have often been ... (and still am) ... in contact with Jan King and I\n> prefer his version to the events re: the timer rather than those related\nin\n> the 1974 journal ... not least since he actually built and installed that\n> timer.\n>\n> (Much has also been said re: Karl Meinzer's \"filter\" ... remember !!!\n> technology has changed, those components are 31 years old !!!)\n>\n> If you have a copy of the news sheet Roger, have a look at page 6 (quote)\n> .... \"accomplished by a crystal controlled clock\" ... (unquote).\n>\n> Without Jan's permission I will NOT retransmit parts of his personal mails\n> to me on this bulletin board but if he assures me ... (and he does) ...\n> that there was no crystal used in the timer ... I believe him. He also\n> explained to me *WHY* it was thus.\n>\n> I believe what was in the 1974 News Sheet may have been the plan !!! ...\nor\n> the wishful thinking, if you will ... but according to the person who\n> actually built and installed it ... \"t'aint necessarily so!\".\n>\n> Like I have mentioned previously, in other mails, 98% of the data\ncollected\n> over the last 3 years is/was false data ... (GM1SXX wrote a special\nprogram\n> just for this particular purpose) ... which, if you look more closely at\nit,\n> (the data) it often contradicts itself ... but again, you will find\n> references to this and the timer on the 'Observations\" page at\n> <http://www.observations.biz/>\n>\n> (I have *NOT* published some of my findings on the Amsat-bb since they\n> *could* be conscrued as criticism of Amsat ... (which is most certainly\nnot\n> !!! my intent) ... I have seen what happens to anyone who dare have the\n> audacity to offer a different opinion to the majority... however, that\nbeing\n> said ... what I have found can be read in various articles on the\n> Observations site.\n>\n> People will usually believe what they 'want' to believe Roger ... true or\n> not ... and that's fine by me.\n>\n> In part ... it's a free world.\n>\n> 73 John. <[email protected]>\n>\n............................................................................\n............................................................\n>\n>\n> >From: \"Roger Kolakowski\" <[email protected]>\n> >To: \"James Duffey\" <[email protected]>, <[email protected]>\n> >CC: <[email protected]>, <[email protected]>\n> >Subject: Re: [amsat-bb] Re: AO-7 report.- Band switching\n> >Date: Sun, 5 Aug 2007 11:47:41 -0300\n> >\n> >James Duffey queried...\n> >\n> > >\"When AO-7 is powered all the time doesn't the on board\n> > > housekeeping unit control the mode and switch between mode A and Mode\n> >B?\"\n> >\n> >\n> >\"The following information is from AMSAT NEWSLETTER dated Sept 1974\n> >\n> >The two repeaters are operated alternately by means of a timer\narrangement,\n> >but repeater selection and output power control can also be accomplished\nby\n> >ground command.\"\n> >\n> >And . \"from Jan King, W3GEY, who provided the following information in an\n> >email ...\n> >\n> >It appears that the 24 hour clock that would cycle the transponders\nbetween\n> >modes A and B is working but, it gets reset every time the satellite goes\n> >into eclipse\"\n> >\n> >Which by my understanding, will produce a change of mode from A to B (or\nB\n> >to A if you prefer) every 24 hours with no eclipse event. I believe there\n> >have been cases where excessive power drain (usage) has resulted in a\nmode\n> >change mid-timer, but I haven't been able to document that.\n> >\n> >Roger\n> >WA1KAT\n> >\n> >----- Original Message -----\n> >From: \"James Duffey\" <[email protected]>\n> >To: <[email protected]>\n> >Cc: <[email protected]>; <[email protected]>\n> >Sent: Sunday, August 05, 2007 11:32 AM\n> >Subject: [amsat-bb] Re: AO-7 report.\n> >\n> >\n> > > John - When AO-7 is powered all the time doesn't the on board\n> > > housekeeping unit control the mode and switch between mode A and Mode\nB?\n> > >\n> > > Having a full time Mode B LEO linear transponder is great, in my\n> > > opinion, having a Mode A LEO one will be even better. - Duffey\n> > > On Jul 31, 2007, at 5:32 AM, John Hackett wrote:\n> > >\n> > > A study of the AO-7 eclipse charts for the last 3 years shows a\n> > > progression\n> > > toward non-elipse orbits in late 2007 - 2008.\n> > >\n> > > In effect, this means that AO-7 in all probability will not change\nmode\n> > > unless anything untoward happens.\n> > >\n> > > It also means that we appear to have a permanent mode-B LEO linear\n> > > transponder for the forseeable future ... providing operators follow\nthe\n> > > recommended operating proceedure.\n> > >\n> > > Please *do* decrease your power as the satellite approaches TCA to\n> > > avaoid\n> > > FM'ing.\n> > >\n> > > This not only helps the satellite, it helps the other operators in the\n> > > passband.\n> > >\n> > > Don't be fooled by propagation anomolies. The mode-B transponder is\n> > > working\n> > > well and will continue to do so providing the alligators go and play\n> > > somewhere else. Under normal circumstances you do NOT !! need a lot of\n> > > power. Please use only the necessary to maintain adequate\n> > > communications. If\n> > > you can't copy people adequately, you should improve your receiving\n> > > capabilities rather than increasing your uplink power ... remember,\n> > > aluminium is cheap and it's a lot more user friendly to everyone\n> > > concerned\n> > > .... with perhaps the exception of your neighbours.\n> > >\n> > > For all intents and purposes, AO-7 is a QRP satellite. Please treat\n> > > it as\n> > > such.\n> > >\n> > > 73 John. <[email protected]>\n> > >\n> > >\n> > > _______________________________________________\n> > > Sent via [email protected]. Opinions expressed are those of the\nauthor.\n> > > Not an AMSAT-NA member? Join now to support the amateur satellite\n> > > program!\n> > > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n> > >\n> > > _______________________________________________\n> > > Sent via [email protected]. Opinions expressed are those of the\nauthor.\n> > > Not an AMSAT-NA member? Join now to support the amateur satellite\n> >program!\n> > > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n> > >\n> >\n>\n>\n>\n\n", "attachments": [] }