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GET /hyperkitty/api/list/[email protected]/email/AZ3OYPA2OPHVGVBUFUPJJNVLXG5BSKTH/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/AZ3OYPA2OPHVGVBUFUPJJNVLXG5BSKTH/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "AZ3OYPA2OPHVGVBUFUPJJNVLXG5BSKTH", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/AZ3OYPA2OPHVGVBUFUPJJNVLXG5BSKTH/", "sender": { "address": "clivew (a) zetnet.co.uk", "mailman_id": null, "emails": null }, "sender_name": "Clive Wallis", "subject": "[amsat-bb] OSCAR-11 Report", "date": "2007-06-16T11:46:20Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "\n\n OSCAR-11 REPORT\n\n 16 June 2007\n\nDuring the period 15 May to 15 June 2007, no signals have been received\nfrom the satellite's 145.826 MHz. beacon. I have not received any\nreception reports.\n\nThe satellite is currently subject to solar eclipses, which will continue\nuntil 20 August. The duration of the eclipses has now reached its maximum\ntime of 23 minutes and will now start to decrease.\n\nThe battery can no longer power the satellite during the eclipse season.\nWhen the battery voltage decreases to a preset level, the watchdog timer\nresets, and the beacon is turned off for approximately 21 days. When the\nsatellite restarts, eclipses could cause the beacon to switch OFF, after a\nshort time, probably less than one orbit. This short transmission could\noccur any where over the world, and could be repeated at 20.7 day\nintervals.\n\nOwing to the lack of accurate timings, it is impossible to predict when and\nwhere the satellite will be heard during these short transmission periods.\nIt is just possible that someone tuning around 145.826 MHz. may hear the\nsatellite, by chance.\n\nObservations during the last period of sustained operation (22 to 28 April)\nshowed that the satellite could survive eclipses below 12 minutes duration.\nThis means that sustained transmissions could start any time after 10\nAugust, when then eclipse duration will have decreased to below 12 minutes.\nHowever, if the satellite had switched off just before 10 August, sustained\noperation could be delayed until the end of August.\n\nThe Beacon frequencies are -\n\nVHF 145.826 MHz. AFSK FM ASCII Telemetry\n\nUHF 435.025 MHz. OFF\n\nS-band 2401.5 MHz. OFF\n\nListeners to OSCAR-11 may be interested in visiting my website. The current\nmonthly bulletin contains further details of the satellite's status. If\nyou need to know what OSCAR-11 should sound like, there is a short audio\nclip for you to hear. The website contains an archive of news & telemetry\ndata. It also contains details about using a soundcard or hardware\ndemodulators for data capture. There is software for capturing data, and\ndecoding ASCII telemetry. The URL is www.users.zetnet.co.uk/clivew/\n\nIf you place this bulletin on a terrestrial packet network, please\nuse the bulletin identifier $BID:U2RPT134.CWV, to prevent duplication.\n\n73 Clive G3CWV [email protected] (please replace xxxxx by g3cwv)\n", "attachments": [] }