Email Detail
Show an email
GET /hyperkitty/api/list/[email protected]/email/DF4UHFAQSNHOBSO5WLA76FYICA64INXN/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/DF4UHFAQSNHOBSO5WLA76FYICA64INXN/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "DF4UHFAQSNHOBSO5WLA76FYICA64INXN", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/DF4UHFAQSNHOBSO5WLA76FYICA64INXN/", "sender": { "address": "pa3guo (a) upcmail.nl", "mailman_id": null, "emails": null }, "sender_name": "PA3GUO", "subject": "[amsat-bb] Can Radio Amateur Stations support scientific space\tmissions ?", "date": "2010-11-28T08:01:24Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Dear all,\n\nAfter I installed a new 70cm antenna this week I wanted to 'measure' how \ngood my (modest) station is and how it would perform as a Ground Station \nfor supporting missions as the new RAX, O/OREOS, FASTRAC etc.\n\nThis new antenna is a simple, 12 elements, vertical polarized beam.\nNo circular polarization. How would it work with tumbling satellites ?\n\nTwo experiments done:\n\nRAX: \nRAX transmits (only) every 20 seconds a 9600bd beacon. I did a 24 hour \nfully automated tracking and analyzed all the results: when did I decode, \nwhen did I miss. Here is the report with the details and positive results:\nhttp://www.pa3guo.com/RAX_Telemetry_Analysis_PA3GUO.pdf\n\n\nO/OREOS:\nO/OREOS transmits every 5 seconds, 1200 bd, but is weaker as RAX.\nAlso here I analyzed a couple of passes and compared the results:\nhttp://www.pa3guo.com/OOREOS_Telemetry_Experiment_PA3GUO.pdf\n\nOne of the conclusions in the reports: a 12 element antenna works just fine !\nDid anyone do a similar experiment and has interesting feedback to share ?\n\n--\nHenk, PA3GUO\n", "attachments": [] }