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GET /hyperkitty/api/list/[email protected]/email/UJ46GHV6ABGTZ7NJDPX4KRQ5BKGU6ZJ5/?format=api
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/UJ46GHV6ABGTZ7NJDPX4KRQ5BKGU6ZJ5/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "UJ46GHV6ABGTZ7NJDPX4KRQ5BKGU6ZJ5", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/UJ46GHV6ABGTZ7NJDPX4KRQ5BKGU6ZJ5/?format=api", "sender": { "address": "pierrevd (a) icon.co.za", "mailman_id": null, "emails": null }, "sender_name": "Pierre van Deventer", "subject": "[amsat-bb] Max range apogee vs perigee", "date": "2010-02-26T07:31:25Z", "parent": null, "children": [ "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/B52LVLU62CFJWOEIXZLO4F4JOWG5A3LT/?format=api" ], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Bob W7LRD\n\n\nI came across this info, might be of some value.\n\nRef: The Satellite Experimenters Handbook, Pg 9-6\n\nMax Dist (range) = 2R * arcos [R/(R+h)] \n\nWhere R = 6,371 km and \nh = 1,459 km at Apogee (AO-7)\nh = 1,440 km at Perigee (AO-7)\n\nTherefore the maximum possible communication distance via AO-7 at Apogee =\n7,904 km. \nTherefore the maximum possible communication distance via AO-7 at Perigee =\n7,861 km.\n\nThe difference in range from apogee to perigee appears to be only 33 km.\n\n\n73, Pierre ZS6BB\n\n\n", "attachments": [] }