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GET /hyperkitty/api/list/[email protected]/email/FIUBCESVWY5I7WMLCH5JYVZIINXCZQX5/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/FIUBCESVWY5I7WMLCH5JYVZIINXCZQX5/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "FIUBCESVWY5I7WMLCH5JYVZIINXCZQX5", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/FIUBCESVWY5I7WMLCH5JYVZIINXCZQX5/", "sender": { "address": "broberts (a) mta.ca", "mailman_id": null, "emails": null }, "sender_name": "Bruce Robertson", "subject": "[amsat-bb] Calculating link budgets with linear satellites", "date": "2007-01-04T20:07:34Z", "parent": null, "children": [ "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/3XMEGNT6ISQ3PHQQGQCA32WG324VHZZA/" ], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "I've recently been toying with spreadsheets to estimate antenna\nrequirements for some of the upcoming satellites. I'm not sure, however,\nhow I should integrate the downlink power of a linear bird over its bandpass.\n\nTake for instance Delfi C3. It is said to have a 400mW downlink in a 40kHz\nbandpass. Does this mean that a solitary CW signal would be 400mW, two such\nsignals (both with equal uplink power) would produce a 200mW downlink,\netc.? In calculating power and pathloss using the simple addition and\nsubtraction of dBm, what starting value is it recommended that I use in\nthis case?\n\n73, Bruce\nVE9QRP\n", "attachments": [] }