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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VZWELEFCK3O2MN7DCPBHEZDZ3S4C4Y75/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "VZWELEFCK3O2MN7DCPBHEZDZ3S4C4Y75", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/GU7M2E36QQNXO5RC7EZROU4U7U5MGHHK/?format=api", "sender": { "address": "jimlux (a) earthlink.net", "mailman_id": null, "emails": null }, "sender_name": "Jim Lux", "subject": "[amsat-bb] Re: [TowerTalk] Antenna Wind Load calculations", "date": "2007-08-08T01:13:18Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/GU7M2E36QQNXO5RC7EZROU4U7U5MGHHK/?format=api", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "At 05:18 PM 8/7/2007, Gary \\\"Joe\\\" Mayfield wrote:\n>Work is progressing on my new satellite antenna set up. I have a couple of\n>questions for the group.\n>\n>\n>\n>1. What would be the effective wind area for a 2 foot by 3 foot grid (BBQ)\n>dish?\n\nTricky to calculate wind loads for grills (there's a lot of \ninteraction between the wires and it's very wind speed dependent).. \nmost of the time you can just be conservative and assume it's a solid \nsurface... 6 square feet for yours (if it's actually rectangular, not oval).\n\n\n>\n>\n>2. I have a WIMO helix for L Band (Model 23-2). The info says a wind load\n>of 200 Newtons. Does anyone know under what conditions it is 200 Newtons so\n>I could calculate the area of it?\n\n\n200N = 44lb\n\n\nNothing on the wimo.de website talks about wind speeds...Perhaps \nthere is a DIN standard?\n\n\n", "attachments": [] }